Fluidprop User Manual

General Information FluidProp is a standard interface to several software libraries for the calculation of thermodynamic and transport properties of fluids. This program is developed by P. Colonna and T.P. van der Stelt , Energy Technology Section, Delft University of Technology. Each thermodynamic library implements one or more thermodynamic models for a number of different fluids and mixtures. Fig. 1 schematically shows the main structure of the program.

Fig. 1: FluidProp Structure FluidProp makes it easy to obtain fluid properties in different MS Windows? programs and development environments because it is a COM server , i.e. it follows the Component Object Model standard, a software architecture developed by Microsoft to build component-based applications. COM objects are discrete components, each with a unique identity, which expose interfaces that allow applications and other components to access their features. COM objects are more versatile than Win32 DLLs because they are completely language-independent, have built-in interprocess communications capability, and easily fit into an object-oriented program design. COM was first released in 1993 with OLE2, largely to replace the interprocess communication mechanism DDE used by the initial release of OLE. ActiveX also is based on COM. Server means that it provides calculated values to a main program, which is usually defined as a client; therefore both programs implement a client-server architecture. The new Microsoft .NET runtime environment is fully compatible with the COM standard. FluidProp provides a common interface to the following thermodynamic libraries: GasMix IF97 RefProp (not included in the FluidProp package, must be obtained from NIST ) StanMix TPSI

Independently from the syntax of the client program, the procedure for the calculation of a property is as follows: First call the SetFluid procedure to define the thermodynamic library and the fluid, e.g.

SetFluid( LibName , FluidName ) This function also returns an object identifier (ObjID ) or "memory address" which defines where the input information about the chosen fluid is stored in the memory of the computer. Secondly call the procedure for the desired property and supply the object identifier, the input specification that defines the thermodynamic state and the corresponding values, e.g. Enthalpy( ObjID , InputSpecifier , Value1 , Value2 ) Many thermodynamic properties can be computed by FluidProp with a large number of combinations of input properties to define the thermodynamic state: Available Thermodynamic and Transport Properties Available Thermodynamic State Definitions One innovative feature of FluidProp is that for all thermodynamic models, except for IF97, it is possible to calculate some derived thermodynamic functions (see Table of available Thermodynamic and Transport Properties ) that are demanded e.g. by up-to-date CFD or process dynamics software. In this respect, see e.g.:

1 . Colonna, P. and Silva, P., May 2003. ''Dense Gas Thermodynamic Properties of Single and MultiComponent Fluids for Fluid Dynamics Simulations.'' J. Fluids Engrg. , 125 , pp. 414-427.

2 . Colonna, P. and Rebay, S., 2004. ''Numerical simulation of dense gas flows on unstructured grids with an implicit high resolution upwind Euler solver.'' Int. J. Numer. Meth. Fluids . Accepted for publication.

At the moment the following programs and programming environments have been tested with FluidProp: The Mathworks Matlab/Simulink (Matlab and Simulink Examples ) Microsoft Visual Basic (VB client Example ) Intel Visual Fortran (IVF client Example ) Compaq Visual Fortran (VF client Example ) Microsoft Visual C++ (VC client Example ) Borland C++ (BC client Example ) Borland C++ Builder (BCB client Example ) Microsoft Excel (Excel Example ) Maple (Maple Example ) Every program or development environment supporting the COM standard can be client of the FluidProp server. The following methods (or functions), ordered by category, are available in FluidProp:

Object creation and cleanup Working fluid definition

Simultaneous calculation of

CreateObject

SetFluid

all properties

ReleaseObjects

GetFluid

AllProps

GetFluidNames

AllPropsSat

GetCompSet (obsolete)

Solve

Primary tmd properties

Secondary tmd properties

Transport properties

Pressure

HeatCapV

Viscosity

Temperature

HeatCapP

ThermCond

SpecVolume

SoundSpeed

Density

Alpha

Enthalpy

Beta

Entropy

Chi

IntEnergy

Fi

VaporQual

Ksi

LiquidCmp

Psi

VaporCmp

Zeta Theta Kappa Gamma

Fluid info

Unit definition

Mmol

SetUnits

Tcrit

SetRefState

Pcrit Tmin Tmax AllInfo

Acknowledgements The late Prof. W.C. Reynolds is hereby greatly thanked first and foremost for his teaching and inspiration which went beyond the scientific field. His contribution is acknowledged for his guidance in the development of StanMix and for providing the first version of TPSI. The authors also gratefully acknowledge the contribution of P. Silva who developed the subroutines for several additional TPSI fluids and for the calculation of additional TPSI properties. Moreover the contribution of Dr. E.W. Lemmon (NIST) is recognized: he provided us with the RefProp source code and further information about the code. Radoslaw Gnutek produced the T-s diagrams in Excel. The library FunCustomize.dll is used to create the "FluidProp" category in the Excel function wizard, appears by courtesy of Laurent Longre (http://xcell05.free.fr/) The authors are also in debt with the late Eric Ruyg who as a student helped Teus van der Stelt developing the IF97 model.

Contact information and bug reporting The authors greatly appreciate any help and report of bugs or any other information. Please tell us also about your desires and new features you would like us to add to FluidProp. Anyone in the field of fluid properties modeling who would like to add new features or another fluid library to FluidProp is more than welcomed! If you are going to use FluidProp stand-alone or incorporate FluidProp in another program, you are required to cite and acknowledge our work as follows: P. Colonna, T.P. van der Stelt, 2004, FluidProp: a program for the estimation of thermo physical properties of fluids, Energy Technology Section, Delft University of Technology, The Netherlands (www.FluidProp.com).

Please contact us via: [email protected] More information about FluidProp is available at: www.FluidProp.com

GasMix GasMix implements the ideal gas equation of state:

with a temperature dependent specific heat in the form:

Gas data come from the JANAF tables, as documented in:

1 . Gordon, S., McBride, B.J. Computer Program for Calcu lation Compositions. Lewis Research Center , NASA SP-273, 1971.

of

complex

Chemical

Equilibrium

and more recently in:

2 . Chase, J.M.W., J. Phys. Chem. Ref. Data, Monograph 9, 1998.

Transport properties are calculated according to the following methods: - Viscosity: Chapman &endash; Enskog - Thermal conductivity: Eucken Details of the theory and fluid data for these methods can be found in: 3. Reid, R.C., Prausnitz, J.M. and Sherwood, T.K. The Properties of Gases and Liquids, 3rd ed., McGraw-Hill, 1977.

The GasMix components can be used as pure fluids or in a mixture. GasMix provides thermodynamic and transport properties for the fluids in Table 1. The listed FluidProp names (either short or long ) must be used to specify the fluid name in the SetFluid method. For GasMix the short FluidProp name equals the chemical formula of the fluid. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available.

Table 1

Scientific Name

FluidProp name (short)

FluidProp name (long)

MW Tmin Tmax [g/mol] [°C] [°C]

Acetylene

C2H2

acetylene

26.0382 26.85 4726.85 300

5000

Ammonia

NH3

ammonia

17.0306 26.85 4726.85 300

5000

Argon

Ar

argon

39.948

5000

Tmin Tmax [K] [K]

26.85 4726.85 300

Borane, trichloro

BCl3

trichloro borane

117.1699 26.85 4726.85 300

5000

Borane, trifluoro

BF3

trifluoro borane

67.8061 26.85 4726.85 300

5000

Bromine

Br2

bromine

159.818 26.85 4726.85 300

5000

Carbon dioxide

CO2

carbon dioxide

44.0098 26.85 4726.85 300

5000

Carbon disulfide

CS2

carbon disulfide

76.139

26.85 4726.85 300

5000

Carbon monoxide

CO

carbon monoxide

28.0104 26.85 4726.85 300

5000

Carbon oxide sulfide

COS

carbonyl sulfide

60.0745 26.85 4726.85 300

5000

Carbon tetrachloride

CCl4

carbon tetrachloride

153.823 26.85 4726.85 300

5000

Chloride

Cl2

chloride

70.9059 26.85 4726.85 300

5000

Ethane

C2H6

ethane

30.0694 26.85 2226.85 300

2500

Ethylene

C2H4

ethylene

28.0541 26.85 4726.85 300

5000

Fluorine

F2

fluorine

37.9968 26.85 4726.85 300

5000

Helium

He

helium

4.0026

26.85 4726.85 300

5000

Hydro fluoride

HF

hydro fluoride

20.0063 26.85 4726.85 300

5000

Hydrochloric acid

HCl

hydrochloric acid

36.4609 26.85 4726.85 300

5000

Hydrogen

H2

hydrogen

2.0158

26.85 4726.85 300

5000

Hydrogen atom

H

hydrogen atom

1.0079

26.85 4726.85 300

5000

Hydrogen cyanide

HCN

hydrogen cyanide

27.0258 26.85 4726.85 300

5000

Hydrogen peroxide

H2O2

hydrogen peroxide

34.0147 26.85 4726.85 300

5000

Hydrogen sulfide

H2S

hydrogen sulfide

34.0799 26.85 4726.85 300

5000

Hydroxyl

OH

hydroxyl

17.0073 26.85 4726.85 300

5000

Methane

CH4

methane

16.0426 26.85 4726.85 300

5000

n-Butane

C4H10

butane

58.123

26.85 2226.85 300

2500

Neon

Ne

neon

20.183

26.85 4726.85 300

5000

n-Hexane

C6H14

hexane

86.1766 26.85 1226.85 300

1500

Nitric oxide

NO

nitric oxide

30.0061 26.85 4726.85 300

5000

Nitrogen

N2

nitrogen

28.0134 26.85 4726.85 300

5000

Nitrogen dioxide

NO2

nitrogen dioxide

46.0055 26.85 4726.85 300

5000

Nitrosyl chloride

NOCl

nitrosyl chloride

65.459

26.85 4726.85 300

5000

Nitrous oxide

N2O

nitrous oxide

44.0128 26.85 4726.85 300

5000

n-Pentane

C5H12

pentane

72.1498 26.85 2226.85 300

2500

Oxygen

O2

oxygen

31.9988 26.85 4726.85 300

5000

Oxygen, atomic

O

oxygen atom

15.9994 26.85 4726.85 300

5000

Propane

C3H8

propane

44.0962 26.85 2226.85 300

2500

Silane

SiH4

silane

32.1178 26.85 4726.85 300

5000

Silicon

Si

silicon

28.0855 26.85 4726.85 300

5000

Silicon tetrafluoride

SiF4

silicon tetrafluoride

104.0795 26.85 4726.85 300

5000

Sulfur

S

sulfur

32.064

26.85 4726.85 300

5000

Sulfur dioxide

SO2

sulfur dioxide

64.0627 26.85 4726.85 300

5000

Sulfur hexafluoride

SF6

sulfur hexafluoride

146.0543 26.85 4726.85 300

5000

Sulfur trioxide Water

SO3 H2O

sulfur trioxide water

80.0621 26.85 4726.85 300 18.0152 26.85 4726.85 300

5000 5000

IF97 IF97 implements models for the thermodynamic and transport properties of water and steam according to the IAPWS -IF97 industrial standard and documented in: Wagner, W., Kruse, A. Properties of Water and Steam, The Industrial Standard IAPWS-IF97 for the Thermodynamic Properties and Supplementary Equations for Other Properties, Springer-Verlag Berlin Heidelberg, 1998.

No additional fluids are available in the IF97 library. The main fluid data are:

Scientific name: FluidProp name (short): FluidProp name (long): T critical: P critical: v critical: MW: R: T min: T max: v min:

water H2O water 373.946 220.64 0.0031056 18.015257 461.526 0.01 P <= 100 bar --> Tmax = 2000 °C 100 < P <= 1000 bar --> Tmax = 800 °C 0.000957

[°C] [bar] [m3/kg] [g/mol] [J/kg.K] [°C] [°C] [m3/kg]

RefProp RefProp is developed and maintained by the National Institute of Standard and Technologies and any specific information can be found in the original distribution package. RefProp is not distributed together with the standard version of FluidProp because RefProp is owned and distributed by the National Institute of Standards and Technologies ( NIST ). To get access to RefProp via the common FluidProp interface you must own a valid license of RefProp 8 (or later). Once a valid a license has been obtained or if you have already a valid license, you can contact us about how to establish a link between FluidProp and RefProp. RefProp implements reference equations of state as well as technical equations of state for pure fluids. Reference equations of state are able to describe all experimental thermodynamic property data available for a certain fluid within their experimental uncertainty. Technical equations of state are accurate enough for most technical applications. Mixture properties can also be calculated using a generalized model described in the RefProp documentation. Mixtures can be composed from the list of available pure fluids. R efProp (version 8) provides thermodynamic and transport properties for the pure fluids listed in Table 1. The listed FluidProp names (either short or long ) must be used to specify the fluid name in the SetFluid method. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available. Table 1 ������

Product Name

Scientific Name

FluidProp FluidProp Name Name (long) (short)

Tc [°C]

P c T min [bar] [°C]

Tmax Pmax [°C] [bar]

dimethyl ketone propanone

C3H6O

acetone

234.95

47

276.85 7000

R-717

ammonia

NH3

ammonia

132.25

113.33 -77.655

R-740

argon

Ar

argon

-122.463 48.63 -189.3442 426.85 10000

C6H6

benzene

C6H6

benzene

288.9

48.94 9.85

361.85 780

R-600

n-butane

C4H10

butane

151.975

37.96 -138.28

315.85 690

1-butylene

1-butene

C4H8

butene

146.14

40.051 -185.35

251.85 700

R-744

carbon dioxide

CO2

carbon dioxide

30.9782

73.773 -56.558

826.85 8000

CO

carbon monoxide

CO

carbon monoxide

-140.29

34.935 -205.023 2226.85 1000

COS

carbon oxide sulfide

COS

carbonyl sulfide

105.62

63.7

-138.85

376.85 500

(Z)-2-butene

cis-2-butene

c-C4H8

cis-butene

162.6

42.255 -138.85

251.85 500

C6H12

cyclohexane

C6H12

cyclohexane

280.49

40.75 6.32

426.85 800

C3H6

cyclopropane

C3H6

cyclopropane

125.15

55.797 -0.15

199.85 280

n-decane

decane

C10H22

decane

344.55

21.03 -29.65

401.85 8000

D2

deuterium

D2

deuterium

-234.81

16.653 -254.44

149.85 3200

RE-170

dimethylether

C2H6O

dimethylether

126.95

53.702 -73.15

176.85 200

n-dodecane

dodecane

C12H26

dodecane

384.95

18.17 -9.55

1226.85 0

R-170

ethane

C2H6

ethane

32.172

48.722 -182.782 401.85 9000

C2H6O

ethyl alcohol

C2H6O

ethanol

240.78

61.309 -23.15

R-1150

ethene

C2H4

ethylene

9.2

50.418 -169.164 176.85 3000

F2

fluorine

F2

fluorine

-128.736 51.724 -219.6689 26.85

D2O

deuterium oxide

D2O

heavy water

370.74

R-704

helium-4

He

helium

-267.9547 2.275 -270.9732 1226.85 1000

n-heptane

heptane

C7H16

heptane

266.98

27.36 -90.6

326.85 1000

n-hexane

hexane

C6H14

hexane

234.67

30.34 -95.32

326.85 1000

R-702

hydrogen (normal)

H2

hydrogen (normal)

-239.96

13.15 -259.193 126.85 1210

H2S

hydrogen sulfide

H2S

hydrogen sulfide

99.95

90

-94.65

216.71 3.82

-85.45

426.85 10000

426.85 5000 200

526.85 1000

486.85 1700

R-600a

2-methylpropane

i-C4H10

isobutane

134.667

36.4

-159.59

299.85 350

methylpropene

2-methyl-1-propene

i-C4H8

isobutene

144.94

40.098 -140.75

276.85 500

i-C6H14

2-methylpentane

i-C6H14

isohexane

224.55

30.4

276.85 10000

R-601a

2-methylbutane

i-C5H12

isopentane

187.2

33.78 -160.5

226.85 10000

Kr

krypton

Kr

krypton

-63.67

55.25 -157.38

476.85 2000

R-50

methane

CH4

methane

-82.586

45.992 -182.4559 351.85 10000

methyl alcohol

methanol

CH4O

methanol

240.23

82.158 -97.54

R-720

neon

Ne

neon

-228.6582 26.786 -248.588 426.85 7000

C5H12

2,2-dimethylpropane

neo-C5H12

neopentane

160.59

R-728

nitrogen

N2

nitrogen

-146.958 33.958 -209.999 1726.85 22000

NF3

nitrogen trifluoride

NF3

nitrogen trifluoride

-39.15

44.607 -188.15

226.85 500

nitrogen oxide

dinitrogen monoxide

N2O

nitrous oxide

36.425

72.54 -90.82

201.85 400

n-nonane

nonane

C9H20

nonane

321.4

22.81 -53.45

301.85 8000

n-octane

octane

C8H18

octane

296.17

24.97 -56.78

326.85 1000

R-732

oxygen

O2

oxygen

-118.569 50.43 -218.789 726.85 820

R-702p

parahydrogen

p-H2

parahydrogen

-240.212 12.838 -259.35

126.85 1210

R-601

pentane

C5H12

pentane

196.55

33.7

326.85 1000

perfluorobutane decafluorobutane

C4F10

perfluoro butane

113.176

23.234 -84.15

226.85 300

perfluoropentane dodecafluoropentane

C5F12

perfluoro pentane

147.405

20.45 -73.15

226.85 300

R-290

propane

C3H8

propane

96.675

42.471 -187.67

349.85 1030

R-1270

propene

C3H6

propylene

92.42

46.646 -173.15

326.85 2000

methyl acetylene propyne

C3H4

propyne

129.23

56.26 -0.15

200.85 320

CFC-11

trichlorofluoromethane

R11

R11

197.96

44.076 -110.47

351.85 300

CFC-113

1,1,2-trichloro-1,2,2trifluoroethane

R113

R113

214.06

33.922 -36.22

251.85 2000

CFC-114

1,2-dichloro-1,1,2,2tetrafluoroethane

R114

R114

145.68

32.57 0

233.85 210

CFC-115

chloropentafluoroethane R115

R115

79.95

31.2

226.85 600

FC-116

hexafluoroethane

R116

19.88

30.48 -100.05

CFC-12

dichlorodifluoromethane R12

R12

111.97

41.361 -157.051 251.85 2000

HCFC-123

2,2-dichloro-1,1,1trifluoroethane

R123

R123

183.681

36.618 -107.15

326.85 400

HCFC-124

1-chloro-1,2,2,2tetrafluoroethane

R124

R124

122.275

36.243 -153.15

196.85 400

HFC-125

pentafluoroethane

R125

R125

66.023

36.177 -100.63

226.85 600

CFC-13

chlorotrifluoromethane

R13

R13

28.85

38.79 -181.15

129.85 350

HFC-134a

1,1,1,2tetrafluoroethane

R134a

R134a

101.06

40.593 -103.3

181.85 700

FC-14

tetrafluoromethane

R14

R14

-45.64

37.5

349.85 510

HCFC-141b

1,1-dichloro-1fluoroethane

R141b

R141b

204.35

42.12 -103.47

226.85 4000

HCFC-142b

1-chloro-1,1difluoroethane

R142b

R142b

137.11

40.55 -130.43

196.85 600

HFC-143a

1,1,1-trifluoroethane

R143a

R143a

72.707

37.61 -111.81

376.85 1000

HFC-152a

1,1-difluoroethane

R152a

R152a

113.261

45.168 -118.59

226.85 600

HCFC-21

dichlorofluoromethane

R21

R21

178.33

51.812 -73.15

200.04 1379

perfluoropropane octafluoropropane

R218

R218

71.87

26.4

-147.7

166.85 200

HCFC-22

chlorodifluoromethane

R22

R22

96.145

49.9

-157.42

276.85 600

HFC-227ea

1,1,1,2,3,3,3heptafluoropropane

R227ea

R227ea

102.8

29.99 -126.8

201.85 600

HFC-23

trifluoromethane

R23

R23

26.143

48.32 -155.13

201.85 1200

HFC-236ea

1,1,1,2,3,3hexafluoropropane

R236ea

R236ea

139.29

35.02 -31.15

226.85 600

HFC-236fa

1,1,1,3,3,3hexafluoropropane

R236fa

R236fa

124.92

32

-93.63

226.85 400

HFC-245ca

1,1,2,2,3pentafluoropropane

R245ca

R245ca

174.42

39.25 -73.15

226.85 600

HFC-245fa

1,1,1,3,3pentafluoropropane

R245fa

R245fa

154.05

36.4

226.85 600

R116

-153.55

31.96 -16.55

-129.68

-99.39

-174.21

-73.15

346.85 8000 276.85 2000

151.85 500

HFC-32

difluoromethane

R32

R32

78.105

57.82 -136.81

161.85 700

HFC-365mfc

1,1,1,3,3pentafluorobutane

C4H5F5

R365mfc

186.85

32.66 -34.15

226.85 350

HFC-41

fluoromethane

R41

R41

44.13

58.97 -143.33

151.85 700

FC-C318

octafluorocyclobutane

C4F8

RC318

115.23

27.775 -39.8

349.85 600

R-764

sulfur dioxide

SO2

sulfur dioxide

157.49

78.84 -75.45

251.85 350

SF6

sulfur hexafluoride

SF6

sulfur hexafluoride

45.583

37.546 -50.77

251.85 550

CH3-C6H5

methylbenzene

C7H8

toluene

318.6

41.263 -95.15

426.85 5000

(E)-2-butene

trans-2-butene

t-C4H8

trans-butene

155.46

40.273 -105.55

251.85 500

CF3I

trifluoroiodomethane

CF3I

trifluoroiodomethane 123.29

39.53 -153.15

146.85 200

R-718

water

H2O

water

373.946

220.64 0.01

1001.85 10000

Xe

xenon

Xe

xenon

16.583

58.42 -111.75

476.85 7000

The predefined mixtures of RefProp are also available through this version of the FluidProp interface. These mixtures are listed in table 2. The listed FluidProp names (either short or long ) must be used to specify the fluid name in the SetFluid method. Table 2

Product Components Name

FluidProp MW T c P c T min Tmax Name [g/mol] [°C] [bar] [°C] [°C] (short and long)

air

nitrogen/oxygen/argon

air

28.9586

-140.3 38.508 -217.44 1720.6

R401a

R22/R152a/R124

R401a

94.4384

107.34 46.08 -155.18 246.7

R401b

R22/R152a/R124

R401b

92.8361

105.57 46.858 -156.39 252.16

R401c

R22/R152a/R124

R401c

101.034

111.73 43.735 -153.27 231.67

R402a

R22/propane/R125

R402a

101.55

75.817 42.194 -145.5 244.83

R402b

R22/propane/R125

R402b

94.7091

82.891 45.156 -154.6 256.45

R403a

R22/propane/R218

R403a

91.9849

86.973 47.054 -168.91 256.07

R403b

R22/propane/R218

R403b

103.257

79.638 43.269 -170.22 234.72

R404a

R125/R134a/R143a

R404a

97.6038

72.046 37.289 -112.09 307.5

R405a

R22/R152a/R142b/RC318

R405a

111.908

106.14 42.845 -140.07 276.98

R406a

R22/isobutane/R142b

R406a

89.8574

116.85 48.566 -153.88 242.03

R407a

R32/R125/R134a

R407a

90.1107

82.257 45.152 -119.09 191.55

R407b

R32/R125/R134a

R407b

102.937

74.969 41.302 -113.09 207.54

R407c

R32/R125/R134a

R407c

86.2036

86.029 46.293 -120.76 185.13

R407d

R32/R125/R134a

R407d

90.9616

91.375 44.68 -117.06 183.55

R407e

R32/R125/R134a

R407e

83.7818

88.459 47.018 -121.8 181.18

R408a

R22/R125/R143a

R408a

87.0149

83.14 42.945 -142.75 315.03

R409a

R22/R124/R142b

R409a

97.4333

109.26 46.986 -157.96 246.96

R409b

R22/R124/R142b

R409b

96.6731

106.92 47.341 -159.22 251.3

R410a

R32/R125

R410a

72.5854

71.35 49.019 -130.26 187.15

R410b

R32/R125

R410b

75.5723

70.816 48.125 -128.62 190.46

R411a

R22/R152a/propylene

R411a

82.3642

99.106 49.519 -158.96 271.07

R411b

R22/R152a/propylene

R411b

83.0689

95.926 49.441 -163.56 275.32

R412a

R22/R142b/R218

R412a

92.1736

107.17 49.045 -156.82 250.23

R413a

R218/R134a/isobutane

R413a

103.955

96.58 40.22 -118.59 178.35

R414a

R22/R124/isobutane/R142b

R414a

96.932

112.68 46.79 -158.46 242.19

R414b

R22/R124/isobutane/R142b

R414b

101.589

110.99 45.917 -159.13 240.97

R415a

R22/R152a

R415a

81.9105

101.97 49.589 -154.57 267.53

R415b

R22/R152a

R415a

70.1946

111.37 46.537 -132.35 238.58

R416a

R134a/R124/butane

R416a

111.921

107.08 39.757 -131.65 185.11

R417a

R134a/R125/butane

R417a

106.746

87.138 40.359 -112.78 199.26

R418a

R22/propane/R152A

R418a

84.5949

96.204 49.813 -162.89 275.65

R419a

R125/R134A/dimethylether

R419a

109.338

82.065 39.385 -110.56 222.43

R420a

R134A/R142B

R420a

101.845

104.76 40.862 -112.97 182.34

R421a

R125/R134A

R421a

111.746

82.775 39.192 -106.99 203.84

R421b

R125/R134A

R421b

116.929

72.41 37.487 -106.16 217.71

R422a

R125/R134A/isobutane

R422a

113.604

71.727 37.462 -114.88 218.41

R422b

R125/R134A/isobutane

R422b

108.518

83.216 39.581 -114.27 202.95

R422c

R125/R134A/isobutane

R422c

113.399

73.07 37.762 -113.98 216.53

R422d

R125/R134A/isobutane

R422d

109.935

79.578 39.052 -115.06 207.82

R423a

R134A/R227EA

R423a

125.959

99.142 35.634 -118.45 185.66

R424a

R125/R134A/isobutane/ butane/isopentane

R424a

108.412

85.889 40.03 -112.34 200.18

R425a

R32/R134A/R227EA

R425a

90.3065

93.883 45.011 -121.54 177.33

R426a

R125/R134A/butane/isopentane R426a

101.559

99.838 40.883 -111.39 183.13

R427a

R32/R125/R143A/R134A

90.444

85.324 43.917 -117.84 201.24

R428a

R125/R143A/propane/isobutane R428a

107.528

69

R500

R12/R152a

R500

99.303

102.09 41.683 -152.94 227.57

R501

R22/R12

R501

93.0983

95.873 47.609 -163.44 266.53

R502

R22/R115

R502

111.628

81.507 40.168 -149.97 262.85

R503

R23/R13

R503

87.2467

18.415 42.803 -178.17 148.57

R504

R32/R115

R504

79.2491

62.138 44.288 -140.24 166.09

R507a

R125/R143a

R507a

98.8592

70.617 37.05 -111.79 308.37

R508a

R23/R116

R508a

100.098

10.192 36.508 -147.21 158.36

R508b

R23/R116

R508b

95.394

11.205 37.716 -150.14 162.79

R509a

R22/R218

R509a

123.962

68.416 35.962 -165.41 205.63

R427a

37.248 -115.78 259.74

StanMix The complete thermodynamic model implemented in StanMix is documented in the following references: 1. Colonna, P., June 1995. Properties of Fluid Mixtures for Thermodynamic Cycles Applications.Tech. rep., Stanford University, Stanford, CA. 2. Angelino, G. and Colonna, P., 1998. ''Multicomponent Working fluids for Organic Rankine Cycles (ORCs).'' Energy , 23 , pp. 449-463.

The PRSV cubic equation of state, which is a modified Peng Robinson equation of state particularly suited for the accurate estimation of saturation properties, is described in 3. Stryjeck, R. and Vera, J.?H., 1986. ``PRSV: An Improved Peng-Robinson Equation Of State For Pure Compounds And Mixtures.'' Can. J. Chem. Eng. , 64, pp. 323-333.

The Wong and Sandler mixing rules which are suitable for the modeling of highly non-ideal mixtures are documented e.g. in: 4. Wong, D. S. H., Sandler, S. I., and Orbey, H., 1992. ``Equation Of State Mixing Rule For Nonideal Mixtures Using Available Activity Coefficient Model Parameters And That Allows Extrapolation Over Large Ranges Of Temperature And Pressure.'' Ind. Eng. Chem. Res. , 31, pp. 2033-2039. 5. Wong, D. S. H. and Sandler, S. I., 1992. ``A Theoretically Correct Mixing Rule for Cubic Equations of State.'' AIChE Journal , 38, pp. 671-680. 6. Huang, H. and Sandler, S. I., 1993. ``Prediction of Vapor-Liquid Equilibria at High Pressures Using Activity Coefficient Parameters Obtained from Low Pressure Data: A comparison of Two Equation of State Mixing Rules.'' Ind. Eng. Chem. Res. , 32, pp. 1498-1503. 7. Orbey, H. and Sandler, S. I., 1993. ``Accurate Equation of State Predictions at high temperatures and pressures using the existing UNIFAC model.'' Fluid Phase Equilib. , 85, pp. 41-54. 8. Sandler, S. I. et al. , 1994. Models For Thermodynamic And Phase Equilibria Calculations . Marcel Dekker, New York. 9. Orbey, H. and Sandler, S. I., 1995. ``On the Combination of Equation of State and Excess Free Energy Models.'' Fluid Phase Equilib. , 111, pp. 53-70. 10. Orbey, H. and Sandler, S. I., 1995. ``Reformulation of Wong-Sandler Mixing Rules for Cubic Equations of State.'' AIChE J. , 41. 11. Orbey, H. and Sandler, S. I., 1995. ``Equation of State modeling of Refrigerant Mixtures.'' Ind. Eng. Chem. Res. , 34, pp. 2520-2525. 12. Orbey, H. and Sandler, S. I., 1997. ``A Comparison of Huron-Vidal Type Mixing Rules of Mixtures of Compounds with Large Size Differences, and a New Mixing Rule.'' Fluid Phase Equilib. , 132, pp. 1-14. 13. Shiflett, M. B. and Sandler, S. I., June 1998. ``Modeling Fluorocarbon Vapor Liquid Equilibria using the WongSandler model.'' Fluid Phase Equilib. , 147, pp. 145-162.

IMPORTANT NOTE : at the moment StanMix implements a simple Successive Substitution Method for the solution of saturation calculations that is known to fail for close-to-critical states and performs worse for highly non-ideal mixtures. The critical point calculation for a mixture is implemented as the pseudo-critical point calculation if the composition is specified by the user, therefore the result is highly inaccurate, but an estimate is necessary for all other type of calculations. For predefined mixtures the critical point is calculated with a "climbing" method, that is the bubble point calculation is repeated by increasing the temperature in ever small steps until it does not converge anymore. This is also an inaccurate estimate even if much better than the pseudo-critical point calculation. We plan to improve these calculations. StanMix provides thermodynamic properties for the pure fluids listed in Table 1 and 2. The listed

FluidProp names (either short or long ) must be used to specify the fluid name the SetFluid method. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available. Table 1

Product Name Scientific Name

Tc Chemical FluidProp FluidProp Formula Name Name (long) [°C] (short)

1-Propanol

1propanol

C3H8O

1-C3H8O

1-propanol

263.56 51.6955 60.096

59.85

350

2-Propanol

2propanol

C3H8O

2-C3H8O

2-propanol

235.25 47.6425 60.096

51.85

350

Acetone

acetone

C3H6O

C3H6O

acetone

234.95 46.9595 58.08

-94.95 400

Ammonia

ammonia

H3N

NH3

ammonia

132.45 112.977 17.032

-78.15 600

Benzene

benzene

C6H6

C6H6

benzene

289.01 48.9795 78.114

5.85

350

Biphenyl

biphenyl

C12H10

C12H10

biphenyl

496

31.2078 154.21

19.85

350

Carbondioxide

carbon dioxide

CO2

CO2

carbon dioxide

31.04

73.81

44.011

-57.15 800

Cyclohexane

cyclohexane

C6H12

C6H12

cyclohexane

280.49 40.75

84.162

6.85

Ethane

ethane

C2H6

C2H6

ethane

29.28

Ethanol

ethanol

C2H6O

C2H6O

ethanol

240.77 61.4833 46.069

19.85

350

Ethylbenzene

ethylbenzene

C8H10

C8H10

ethylbenzene

344.05 36.06

106.168

32.85

329.85

Hexafluorobenzene hexafluorobenzene

C6F6

C6F6

hexafluoro benzene

243.52 33.378

186

0

400

Hydrogen

hydrogen

H2

H2

hydrogen

-229.55 20.47

2.016

-259.15 350

Isobutane

2-methyl-propane

C4H10

i-C4H10

isobutane

135.05 36.5

58.124

-108.15 135.05

Isopentane

2-methyl-butane

C5H12

i-C5H12

isopentane

187.25 33.9

72.151

-53.15 187.25

Methanol

methanol

CH4O

CH4O

methanol

242.43 80.9579 32.042

14.85

350

Naphthalene

naphthalene

C10H8

C10H8

naphthalene

475.2

86.85

249.85

n-Butane

n-butane

C4H10

C4H10

butane

152.01 37.9661 58.124

-91.15 400

n-Hexane

n-hexane

C6H14

C6H14

hexane

234.15 30.1236 86.178

-41.15 400

Nitrogen

nitrogen

N2

N2

nitrogen

-146.95 34

-209.15 350

n-Octane

n-octane

C8H18

C8H18

octane

295.61 24.8649 114.22

0

n-Pentane

n-pentane

C5H12

C5H12

pentane

196.55 33.6802 72.151

-77.15 400

Oxygen

oxygen

O2

O2

oxygen

-118.38 50.9

31.999

-217.15 350

PP2

PP2

C7F14

C7F14

PP2

211.85 20.6

350

0

600

PP5

perfulorodecalin

C10F18

C10F18

PP5

291.85 17.875

462

0

400

Propane

propane

C3H8

C3H8

propane

96.67

p-Xylene

1,4-dimethylbenzene

C8H10

C8H10

p-xylene

343.08 35.11

106.167

34.85

R113

1,1,2trichlorotrifluorethane

C2Cl3F3

R113

R113

214.15 34.1

187.38

-34.95 400

R114

1,2C2Cl2F4 dichlorotetrafluoroethane

R114

R114

145.75 32.7

170.94

-94

R116

hexafluroethane

R116

R116

19.85

138.012

-100.75 400

R12

dichlorodifluoromethane CCl2F2

R12

R12

111.85 40.7

120.914

-140

R125

pentafluoroethane

R125

R125

66.25

36.31

120.02

-40.15 400

R134a

1,1,1,2-tetrafluoroethane CF3CH2F

R134a

R134a

101.06 40.56

102.03

-63.15 101.06

R14

tetrafluoromethane

CF4

R14

R14

-45.55 37.4

88.005

-183.15 400

R142b

1-chloro-1,1difluoroethane

CH3CCIF2

R142b

R142b

136.45 43.3

100.496

-130.15 136.45

R22

chlorodifluoromethane

CHCLF2

R22

R22

96.05

49.8

86.48

-73.15 400

R23

trifluoromethane

CHF3

R23

R23

25.91

48.41

70.013

-163.15 400

R245fa

1,1,1,3,3pentafluoropropane

C3H3F5

R245fa

R245fa

154.05 36.4

134.055

-73.15 226.85

R32

difluoromethane

CH2F2

R32

R32

78.41

52.024

-124.15 78.41

Toluene

toluene

C7H8

C7H8

toluene

318.65 41.06

92.141

12.85

399.85

Trimethylbenzene 1,2,3-trimethylbenzene

C9H12

C9H12

trimethylbenzene 364.1

120.19

56.85

359.85

Water

H2O

H2O

water

0

750

water

C2F6 C2HF5

Pc [bar]

MW Tmin Tmax[ [g/mol] [°C] ? C]

48.7976 30.07

40.5093 128.174

28.013

42.4953 44.09

30.18

58.3 31.27

374.14 220.8975 18.015

350

-153.15 350

400

-145.15 400 329.85

400

273.15

the saturation curve and the specific heat in the ideal gas state. Moreover the mixtures listed in Table 2 are available as predefined mixtures. The listed FluidProp names (either short or long ) must be used to specify the fluid name the SetFluid method. Other mixtures can be added if pure and binary interaction data are available. A large collection of binary interaction parameters data is available, for example, on: 14. Various authors. DECHEMA Chemistry Data Series, Frankfurt am Main (1977 and thereafter). 15. DETHERM : Thermophysical properties of pure substances & mixtures 16. Infotherm : Experimental thermodynamic and physical properties of mixtures and pure substances 17. DIPPR : Evaluated Process Design Data of the AIChE Design Institute of Physical Properties

Please contact us if you need to add a fluid or a mixture. Table 2

Product Name

FluidProp Name (short)

FluidProp Name (long)

Tc Pc [°C] [bar]

Water-2Propanol

H2O/2-C3H8O

water/2-propanoll

292.4 98.70

Air

air

air

-142.1 35.89

BenzeneToluene

C6H6/C7H8

benzene/toluene

330.7 87.64

BenzeneCyclohexane

C6H6/C6H12

benzene/cyclohexane

284.7 45.89

BenzeneCyclohexaneHexane

C6H6/C6H12/C6H14 benzene/cyclohexane/hexane 254.7 36.91

BenzeneEthylbenzene

C6H6/C8H10

benzene/ethylbenzene

321.6 43.77

BenzeneHexane

C6H6/C6H14

benzene/hexane

260.7 40.03

BenzeneWater

C6H6/H2O

benzene/water

341.2 146.89

ButaneHexane

C4H10/C6H14

butane/hexane

202.1 36.84

ButanePentane

C4H10/C5H12

butane/pentane

177.0 37.67

Ethanol-Water C2H6O/H2O

ethanol/water

304.6 135.01

Ethylbenzene- C8H10/C7H8 Toluene

ethylbenzene/toluene

332.3 38.84

HexaneCyclohexane

C6H14/C6H12

hexane/cyclohexane

256.7 35.50

IsobutaneIsopentane

i-C4H10/i-C5H12

isobutene/isopentane

165.0 36.39

MethanolBenzene

CH4O/C6H6

methanol/benzene

269.7 76.23

MethanolWater

CH4O/H2O

methanol/water

308.1 149.91

NitrogenOxygen

N2/O2

nitrogen/oxygen

-140.7 37.94

PentaneHexane

C5H12/C6H14

pentane/hexane

217.2 32.32

PropanePentane

C3H8/C5H12

propane/pentane

160.1 44.82

R113-Ethanol R113/C2H6O

R113/ethanol

229.9 60.56

R114-Ethanol R114/C2H6O

R114/ethanol

204.2 59.05

R134a-R116

R134a/R116

65.9

R134a/R116

31.53

R134a-R142b R134a/R142b

R134a/R142b

119.3 43.19

R14-R23

R14/R23

R14/R23

-1.6

57.24

R32-R125R134a

R407a

R407a

75.8

41.83

R32-R125 (1) R410a

R410a

74.8

51.42

R32-R125 (2) R410b

R410b

74.3

50.42

The limits for the calculation of properties are as follows: For a pure fluid: Pmin = Psat at freezing temperature, i.e. P (Tmin, q=1 ) Pmax = P (Tmax , v = 1/2 vc ) For a mixture: Tmin = Max[Tmin (i )]; i = 1,2,..., ncomponents Tmax = Min[Tmax (i )]; i = 1,2,..., ncomponents Pmin = P (Tmin , q = 0) Pmax = P (Tmax , v = 1/2 vc,min ), vc,min = Max[vc (i )] ; i = 1,2,..., ncomponents

TPSI TPSI implements the computer programs described in: 1. Reynolds, W.C., Thermodynamic properties in S.I. , Department of Mechanical Engineering - Stanford University, Stanford, CA, 1979.

A first version of the program was written by Prof. W.C. Reynolds and distributed as a DOS executable program. The program was later modified and expanded with more fluids and properties, as documented in: 2. ?Colonna, P., Rebay, S., and Silva, P., Computer Simulations of Dense Gas Flows Using Complex Equations of State for Pure Fluids and Mixtures and State of the Art Numerical Schemes. Tech. Rep., Universit? di Brescia, Via Branze, 38, 25123 Brescia, Italy, March 2002.

TPSI provides thermodynamic properties for the fluids listed in Table 1. The listed FluidProp names (either short or long ) must be used to specify the fluid name in the SetFluid method. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available. ? Table 1

Product Scientific Name Name

Chemical FluidProp Formula Name (short)

FluidProp Tc [? Pc vc MW R Tmin T Name C] [bar] [m3/kg] [g/mol] [J/kg.K] [?C] [ (long)

Air

[-]

N2(0.79) / air O2(0.2095 ) / Ar( 0.0096 )

air

-140.65 37.7

0.0029129 28.96

287.0686

-223.15 1

Ammonia

Ammonia

NH3

NH3

ammonia

133.65 116.27 0.00420805 17.03

488.2098

-73.15 4

Butane

Butane

C4H10

C4H10

butane

150.8

37.183 0.00490196 58.12

143.0797

-73.15 3

Hexane

Hexane

C6H14

C6H14

hexane

232.98 29.265 0.00521839 86.18

96.50393

-23.15 3

Isopentane Isopentane

C5H12

i-C5H12

isopentane

187.83 34.089 0.0046215 72.15

115.2638

-73.15 3

Methane

Methane

CH4

CH4

methane

-82.595 45.988 0.00623325 16.043

518.2535

-182.47 3

Moist Air (1)

[-]

[-]

N2/O2/Ar/H2O moist. air

[-]

[-]

[-]

[

Octane

Octane

C8H18

C8H18

octane

294.36 23.997 0.00552334 114.22

72.80376

26.85

3

Pentane

Pentane

C5H12

C5H12

pentane

193.85 32.396 0.00508466 72.15

115.2638

-23.15 3

Propane

Propane

C3H8

C3H8

propane

96.67

42.362 0.00506637 44.09

188.7326

-73.15 3

R11

Trichlorofluoromethane CCl3F

R11

R11

198

44.092 0.00180584 137.38

60.5223

-73.15 3

R12

Dichlorodifluoromethane CCl2F2

R12

R12

112.02 41.599 0.00179186 120.93

68.748

-73.15 3

Water

Water

H20

water

374.15 221

461.51

0

H20

[-]

[-]

[-]

0.00315457 18.016

(1) In this model air and H2O vapor are treated as perfect gas with variable specific heats. The liquid is treated as incompressible. It uses specific heat and saturation equations from the appropriate TPSI subroutines of the other fluids.

8

Basics and conventions Each client program and development environment uses a different syntax. Several examples are provided: The Mathworks Matlab and Simulink Microsoft Visual Basic Compaq Visual Fortran Intel Visual Fortran Microsoft Visual C++ Borland C++ Borland C++ Builder Microsoft Excel Maple Example These examples are provided as an illustration for the use of the FluidProp methods in various programming languages and environments. In the description of each method provided in this section of the help file a general syntax is adopted (see e.g. Enthalpy). The example can be adapted to the particular syntax of each client program or development environment.

Table of available Thermodynamic State definitions The set of possible combinations of independent thermodynamic variables which can be used as an input for one of the FluidProp methods to compute another thermodynamic variable is listed in Table 1. Not all combinations are available for all the libraries. The state definition gives a string which defines the input variables for a FluidProp method (see e.g. Enthalpy). Table 1 State definition TPSI

StanMix IF97

GasMix

RefProp

PT Pv Pd Ph Ps Pq

n/a

Pu Tv Td Th

n/a

n/a

n/a

Ts Tq Tu

n/a n/a

n/a

n/a

vh vs vq

n/a

n/a

n/a

n/a

n/a

n/a

vu dh ds dq du hs sq

n/a

n/a

su

n/a

n/a

Legend: n/a = not available P = Pressure T = Temperature v = Specific volume d = Density h = Enthalpy s = Entropy u = Internal energy q = Vapor quality

n/a

Table of available Thermodynamic and Transport Properties The properties listed in Table 1 can be computed by FluidProp. The corresponding symbol is used to define the combination to set a thermodynamic state as an input for a method.

Table 1

Thermophysical property

Method

Symbol

Default unit

Pressure

Pressure

P

bar

Temperature

Temperature T

?C

Specific volume

SpecVolume v

m3/kg

Density

Density

Enthalpy

Enthalpy

h

kJ/kg

Entropy

Entropy

s

kJ/kg.K

Internal energy

IntEnergy

u

kJ/kg

Vapor quality

VaporQual

q

kg/kg

Liquid phase composition

LiquidCmp

x

mole/mole

Vapor phase composition

VaporCmp

y

mole/mole

Isochoric heat capacity

HeatCapV

Cv

kJ/kg.K

Isobaric heat capacity

HeatCapP

Cp

kJ/kg.K

Sound speed

SoundSpeed c

kg/m3

(d)

m/s

Secondary thermodynamic property Alpha

m2/s2 (Alpha)

Secondary thermodynamic property Beta

kg/m3 (Beta)

Secondary thermodynamic property Chi

Nm4/kg2.K (Chi)

Secondary thermodynamic property Fi

1/K (Fi)

Secondary thermodynamic property Ksi

kg2/Nm4 (Ksi) s2/m2

Secondary thermodynamic property Psi (Psi)

kg.K/m3

Secondary thermodynamic property Zeta (Zeta)

Volumetric thermal expansion coefficient

Theta

Isothermal compressibility ?

Kappa

Fundamental derivative of gas dynamics

Gamma

1/K (Theta) 1/bar (Kappa) -

(Gamma) Dynamic viscosity

Viscosity

(Eta)

Pa.s

Thermal conductivity

ThermCond

(Lambda)

W/m.K

Not all properties can be computed by all the libraries interfaced to FluidProp. Table 2 lists the available properties for each library.

Table 2 Thermophysical property FluidProp method

Pressure

Pressure

Temperature

Temperature

Specific Volume

SpecVolume

Density

Density

Enthalpy

Enthalpy

Entropy

Entropy

TPSI StanMix IF97 GasMix RefProp

Internal Energy

IntEnergy

Vapor quality

VaporQual

Liquid phase composition

LiquidCmp

n/a

n/a

n/a

Vapor phase composition

VaporCmp

n/a

n/a

n/a

Heat capacity at const. v

HeatCapV

(1)

Heat capacity at const. P

HeatCapP

(1)

Speed of sound

SoundSpeed

(1)

Alpha

(1)

n/a

Beta

(1)

n/a

Chi

(1)

n/a

Fi

(1)

n/a

Ksi

(1)

n/a

Psi

(1)

n/a

Zeta

(1)

n/a

Volumetric thermal expansion Theta coefficient

(1)

n/a

Isothermal compressibility

Kappa

(1)

n/a

Fundamental derivative of gas dynamics

Gamma

(1)

n/a

Viscosity

Viscosity

n/a

n/a

Thermal Conductivity

ThermCond

n/a

n/a

n/a

(1)

Legend: n/a = not available (1) = not available for the TPSI fluids Air and Moist. Air ;

Available Fluid Info The available fluid info methods are listed in Table 1. Not all properties are available in all the thermodynamic libraries. Table 1 Info property

Method

Default unit

Molar mass

Mmol

kg/mol

Critical temperature

Tcrit

°C

n/a

Critical pressure

Pcrit

bar

n/a

Lower temperature limit Tmin

°C

Upper temperature limit Tmax

°C

Legend: = available n/a = not available

TPSI

StanMix

IF97

GasMix RefProp

Available Units and Unit sets The default units for the thermophysical properties listed in Table 1 can be altered by using the base units listed in Table 2 using the SetUnits method. In addition to the default (FluidProp) unit set, two different unit sets can be specified: the SI and the Anglo-Saxon unit set. Units are per mass by default (cF. Table 1) but can be specified per mole as well. Non-dimensional properties can be obtained by defining a reference state by using the SetRefState method. Table 1 Property name

Symbol

Default unit set

SI unit set

Anglo-Saxon unit set

Pressure

P

bar

Pa

psia

Temperature

T

°C

K

°F

Specific volume

v

m^3/kg

m^3/kg

ft^3/lb

Density

d

kg/m^3

kg/m^3

lb/ft^3

Enthalpy

h

kJ/kg

J/kg

Btu/lb

Entropy

s

kJ/kg/K

J/kg/K

Btu/lb/°R

Internal energy

u

kJ/kg

J/kg

Btu/lb

Isobaric heat capacity

cp

kJ/kg/K

J/kg/K

Btu/lb/°R

Isochoric heat capacity

cv

kJ/kg/K

J/kg/K

Btu/lb/°R

Speed of sound

c

m/s

m/s

ft/s

( P/

alpha

m^2/s^2

m^2/s^2

ft^2/s^2

( P/ u)

beta

kg/m^3

kg/m^3

lb/ft^3

( s/

chi

N.m^4/kg^2/K

N.m^4/kg^2/K

lbf.ft^4/lb^2/°R

( s/ u)

fi

K^-1

K^-1

°R^-1

(

/ h)P

ksi

kg^2/N/m^4

kg^2/N/m^4

lb^2/lbf/ft^4

(

/ P)h

psi

s^2/m^2

s^2/m^2

s^2/ft^2

( T/ v)u

zeta

kg.K/m^3

kg.K/m^3

lb.°R/ft^3

Volumetric thermal expansion coefficient

theta

K^-1

K^-1

°R^-1

Isothermal compressibility

kappa

bar^-1

Pa^-1

psia^-1

Dynamic viscosity

eta

Pa.s

Pa.s

lb/ft/s

Thermal conductivity

lambda

W/m/K

W/m/K

Btu/h/ft/°F

)u

)u

Table 2

Property name

Base units

Length

m

in

ft

Mass

g

lb

oz

Time

s

min

Temperature

K

Temperature difference

yd

mi

h

d

y

°C

°F

°R

K

°C

°F

°R

Area

m2

a

sq in sq ft

sq yd acre

Volume

m3

L

cu in cu ft

cu yd cc

Speed

m/s

mph

kn

Force

N

gf

lbf

Pressure, stress

Pa

bar

atm

mHg

Energy, work, heat

J

Wh

cal

Btu

Power

W

hp

psia

Base units can be preceded (if applicable) by the prefixes listed in Table 3. Table 3 Prefix Name symbol

Factor Prefix Name symbol

Factor

y

yocto

10^-24 da

deca

10^+1

z

zepto

10^-21 h

hecto

10^+2

a

atto

10^-18 k

kilo

10^+3

f

femto

10^-15 M

mega

10^+6

p

pico

10^-12 G

giga

10^+9

n

nano

10^-9

T

tera

10^+12

mu

micro

10^-6

P

peta

10^+15

m

milli

10^-3

E

exa

10^+18

c

centi

10^-2

Z

zeta

10^+21

d

deci

10^-1

Y

yotta

10^+24

Base units, possibly preceded by a prefix, can be used together in arbitrary combinations. For instance the unit of the specific heat capacity (J/kgK) can be formed by combining the units of energy, mass and temperature difference dT by means of the operators listed in Table 4. Table 4

Operator Name symbol

Meaning

.

period

multiply

/

slash

divide

^

circumflex power

A compound unit consists of a row of base units, possibly raised to a certain power, separated by a period or a slash. A base unit raised to a power consists of base unit followed by circumflex and after that a positive or negative number. If no power is specified, the power defaults to 1. For example if a pressure is to be specified as Newton per square meter then it can be written as N/m^2 (or N.m^-2). The number of base units in a compound unit is unlimited. Each base unit and its power form a unit itself. This means that a period or slash in front of the preceding unit does not affect the unit thereafter. Therefore the unit of the specific heat capacity must be written as J/kg/K, or J.kg^-1.K^-1, or J/kg.K^1, or J.kg^-1/K and certainly not as J/kg.K. For more examples, see SetUnits.

CreateObject It creates an empty FluidProp object for a certain library. This method need not to be used if the SetFluid method is employed, because SetFluid itself calls the CreateObject method internally. The CreateObject method can also be used to test if a certain thermodynamic library is available. For example, suppose that the RefProp library is not installed, then CreateObject( &ldots;, "RefProp", ErrorMsg) yields ErrorMsg = "Error in FluidProp: library RefProp not available.". The general syntax for programming languages like Fortran is: CreateObject(FluidObj, Library, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.CreateObject (Library, ErrorMsg) Arguments: FluidObj:

The object that is created

Library:

String, library name (possible values: TPSI, RefProp, StanMix, GasMix, IF97)

ErrorMsg:

String

Note: this method is not available in Excel.

ReleaseObjects It deletes all FluidProp objects from the memory.

This method should always be called at the end of a program execution. Syntax: ReleaseObjects() Note: this method is not available in Excel.

Predefined mixtures Mixtures for which the composition is set in the input file (e.g. .smx files for StanMix, .mix files for RefProp). Custom defined mixtures Custom defined mixturesMixtures for which the composition is defined by the user by providing the Conc() vector

Custom defined mixtures Mixtures for which the composition is defined by the user by providing the Conc() vector

SetFluid It defines the library to be used for the calculation of the fluid properties and the fluid. It returns an Object Identifier to which methods for property calculation can refer (see e.g. Enthalpy). The general syntax is: SetFluid( ModelName, nComp, Comp(), Conc(), ErrorMsg) The syntax for Excel is: SetFluid( ModelName, nComp, Comp(), Conc(), UnitObj) Arguments: ModelName:

String (possible values: TPSI, RefProp, StanMix, GasMix, IF97)

nComp:

Long Integer, number of components

Comp():

String Array, names of components (IMPORTANT: it must match exactly the string returned by the GetFluidNames method but it is not case dependent; both short and long names can be used.)

Conc():

Double Array, concentrations of components

ErrorMsg:

String

UnitObj:

In Excel it is the variable returned by SetUnits. It is optional: leave it blank (" ") for default units.

Notes: FluidProp 2 uses fluid names for all available fluids (returned by the GetFluidNames method) that are common to all libraries; FluidProp 1 employed fluid names that were specific to each good sentence library (returned by the obsolete GetCompSetmethod); for compatibility issues both names can still be used. Examples: For pure fluids or predefined mixtures: SetFluid("TPSI", 1, "methane", 1, ErrorMsg) SetFluid("StanMix", 1, "methane", 1, ErrorMsg) SetFluid("IF97", 1, "", "", ErrorMsg) Note: in this case also the Comp argument is ignored because the IF97 model applies only to water. SetFluid("StanMix", 1, "benzene/toluene", "", ErrorMsg) Note: the Conc() argument is ignored because it is a predefined mixture(in this case benzene (0.5) / toluene (0.5) ). The concentration can also be explicitly specified with Conc() as in the following examples about custom defined mixtures: Comp(1) = "N2" Conc(1) = 0.7729 Comp(2) = "O2" Conc(2) = 0.2075

Comp(3) = "H2O" Conc(3) = 0.0101 Comp(4) = "AR" Conc(4) = 0.0092 Comp(5) = "CO2" Conc(5) = 0.0003 SetFluid("GasMix", 5, Comp, Conc, ErrorMsg) Comp(1) = "R32" Conc(1) = 0.69762 Comp(2) = "R125" Conc(2) = 0.30238 SetFluid("RefProp", 2, Comp, Conc, ErrorMsg) Comp(1) = "benzene" Conc(1) = 0.7 Comp(2) = "toluene" Conc(2) = 0.3 SetFluid("StanMix", 2, Comp, Conc, ErrorMsg) Excel example: SetFluid("TPSI", "propane", "", A1) Notes: A1 is a cell containing the value returned by SetUnits. Using default FluidProp units it is just: SetFluid("TPSI", "propane") The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

GetFluid It returns the library name and composition of the working fluid. The general syntax for programming languages like Fortran is: GetFluid(FluidObj, Library, nComp, Comp(), Conc(), ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.GetFluid( Library, nComp, Comp(), Conc(), ErrorMsg) Arguments: FluidObj:

An object variable created at runtime

Library:

String, name of library

nComp:

Long Integer, number of components

Comp():

String Array, names of components

Conc():

Double Array, concentrations of components

ErrorMsg:

String

Note: this method is not available in Excel. In case of a predefined mixture and if nComp = -1 is assigned as input value then the composition of the mixture is returned instead of just the mixture name.

GetFluidNames It returns a string vector containing the names of the fluids available in the specified library. Both the long and short name formats can be specified. The general syntax is: GetFluidNames( Type, Library, nFluids, FluidSet, ErrorMsg) The syntax for Excel is: GetFluidNames( Type, Library) Arguments:

Type:

a string containing either "short", "s", "long" or "l", which indicates the wanted format for the names (input)

Library:

a string containing the library name; if Library is blank (" ") or "all" then all names of all fluids available are returned (input)

nFluids:

number of fluids in the library (output)

FluidSet:

set of fluids in the library (output)

ErrorMsg:

String (output)

Excel Examples: GetFluidNames("s", "all") GetFluidNames("s", "GasMix") GetFluidNames("l", "RefProp") GetFluidNames("short", "StanMix") GetFluidNames("Long", "TPSI") Note: in case an error occurs during execution, the value returned by the function is a string containing the error description.

GetCompSet OBSOLETE This method has been maintained for compatibility with FluidProp 1. Use GetFluidNames instead.

AllProps It returns all available thermophysical properties, given 2 input thermodynamic variables as defined by the InputSpec argument (see Thermodynamic State definitions). The properties that are calculated and the default units are listed in the table of available Thermodynamic and Transport Properties. The general syntax for procedural programming languages like Fortran is: call AllProps( FluidObj, InputSpec, Value1, Value2, P, T, v, d, h, s, u, q, x, y, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.AllProps( InputSpec, Value1, Value2, P, T, v, d, h, s, u, q, x, y, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, ErrorMsg) The general syntax for Excel is: AllProps( FluidObj, InputSpec, Value1, Value2) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double (input)

Value2:

Double (input)

P, T, v, d, h, s, u, q:

Double (output)

x, y:

1-dimensional double array (output)

cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda:

Double (output)

ErrorMsg:

String (output)

Excel Example: AllProps( A1, "Ts", 50, 0.1) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State

definitions. The function returns an array with 23 elements, namely P, T, v, d, h, s, u, q, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda

AllPropsSat It returns all available thermophysical properties and some saturation properties as function of pressure P, given 2 input thermodynamic variables as defined by the InputSpec argument (see Thermodynamic State definitions).

The thermophysical properties that are calculated and the default units are listed in the table of available Thermodynamic and Transport Properties. The following saturation properties are calculated (default units): d_liq

saturated liquid density

[kg/m3]

d_vap

saturated vapor density

[kg/m3]

h_liq

saturated liquid enthalpy

[kJ/kg]

h_vap

saturated vapor enthalpy

[kJ/kg]

T_sat

saturation temperature

[°C]

dd_liq_dP first-order partial derivative of the saturated liquid density with respect to the pressure

[kg/m3.bar]

dd_vap_dP first-order partial derivative of the saturated vapor density with respect to the pressure

[kg/m3.bar]

dh_liq_dP first-order partial derivative of the saturated liquid enthalpy with respect to the pressure

[kJ/kg.bar]

dh_vap_dP first-order partial derivative of the saturated vapor enthalpy with respect to [kJ/kg.bar] the pressure dT_sat_dP first-order derivative of the saturation temperature with respect to the pressure

[K/bar]

The general syntax for procedural programming languages like Fortran is: call AllPropsSat( FluidObj, InputSpec, Value1, Value2, P, T, v, d, h, s, u, q, x, y, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, d_liq, d_vap, h_liq, h_vap, T_sat, dd_liq_dP, dd_vap_dP, dh_liq_dP, dh_vap_dP, dT_sat_dT, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.AllPropsSat( InputSpec, Value1, Value2, P, T, v, d, h, s, u, q, x, y, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, d_liq, d_vap, h_liq, h_vap, T_sat, dd_liq_dP, dd_vap_dP, dh_liq_dP, dh_vap_dP, dT_sat_dT, ErrorMsg) The general syntax for Excel is: AllPropsSat( FluidObj, InputSpec, Value1, Value2) Arguments:

FluidObj: InputSpec: Value1: Value2: x, y: ErrorMsg:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime. String Double (input) Double (input) 1-dimensional double array (output) String (output)

The remaining arguments are all type Double (output): P, T, v, d, h, s, u, q, cv, cp, c,alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, d_liq, d_vap, h_liq, h_vap, T_sat, dd_liq_dP, dd_vap_dP, dh_liq_dP, dh_vap_dP, dT_sat_dT Excel Example: AllPropsSat( A1, "Ts", 50, 0.1) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions. The function returns an array with 33 elements, namely P, T, v, d, h, s, u, q, cv, cp, c, alpha, beta, chi, fi, ksi, psi, zeta, theta, kappa, gamma, eta, lambda, d_liq, d_vap, h_liq, h_vap, T_sat, dd_liq_dP, dd_vap_dP, dh_liq_dP, dh_vap_dP, dT_sat_dT The saturation properties are calculated at pressure P, which in turn is calculated given the two input thermodynamic variables as defined by the InputSpec argument.

Solve It calculates the root of F(Tmd1,Tmd2) - FF = 0 where Tmd's are available thermodynamic properties, F is any of the available methods for thermodynamic property calculations (see Table of available Thermodynamic and Transport Properties) and FF is a desired value for the property F.

The general syntax for programs like Excel and programming languages like Fortran is: Root = Solve( FluidObj, FuncSpec, FuncVal, InputSpec, Target, FixedVal, MinVal, MaxVal, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: Root = FluidObj.Solve( FuncSpec, FuncVal, InputSpec, Target, FixedVal, MinVal, MaxVal, ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

FuncSpec:

String, function specification ("Pressure", "Temperature",...), i.e. F in F(Tmd1,Tmd2) FF = 0

FuncVal:

Double, desired value of the function F, i.e. FF in F(Tmd1,Tmd2) - FF = 0

InputSpec:

String

Target:

Integer, indicates which is the running variable, i.e. Target = 1 for Tmd1 or Target = 2 for Tmd2

FixedVal:

Double, fixed Value, i.e. Tmd1 (Target = 2) or Tmd2 (Target = 1)

MinVal:

Lower boundary for the running variable

MaxVal:

Upper boundary for the running variable

ErrorMsg:

String

Excel Example to find T for which Gamma(T,v) - G = 0 at fixed v: T = Solve( A1,"Gamma",1.008,"Tv",1,0.3723,0,200) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Pressure It returns the pressure, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: bar The general syntax for programs like Excel and programming languages like Fortran is: P = Pressure( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: P = FluidObj.Pressure( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: P = Pressure( A1, "Ts", 50, 0.1) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Temperature It returns the temperature, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: °C The general syntax for programs like Excel and programming languages like Fortran is: T = Temperature( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: T = FluidObj.Temperature( InputSpec, Value1, Value2, ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: T = Temperature( A1, "Ph", 12.53, 191.4) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

SpecVolume It returns the specific volume, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: m3/kg The general syntax for programs like Excel and programming languages like Fortran is: v = SpecVolume( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: v = FluidObj.SpecVolume( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: v = SpecVolume( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Density It returns the specific volume, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kg/m3 The general syntax for programs like Excel and programming languages like Fortran is: = Density( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is:

= FluidObj.Density( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Density( A1, "PT", 12.53, 253.42) The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Enthalpy It returns the enthalpy, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kJ/kg The general syntax for programs like Excel and programming languages like Fortran is: h = Enthalpy( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: h = FluidObj.Enthalpy( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: h = Enthalpy( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Entropy It returns the entropy, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kJ/kg.K The general syntax for programs like Excel and programming languages like Fortran is: s = Entropy( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: s = FluidObj.Entropy( InputSpec, Value1, Value2, ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: s = Entropy( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

IntEnergy It returns the internal energy, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kJ/kg The general syntax for programs like Excel and programming languages like Fortran is: u = IntEnergy( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: u = FluidObj.IntEnergy( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: u = IntEnergy( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

VaporQual It returns the vapor quality, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kg vapor/kg total The general syntax for programs like Excel and programming languages like Fortran is: q = VaporQual( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: q = FluidObj.VaporQual( InputSpec, Value1, Value2, ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: q = VaporQual( A1, "Ph", 12.53, 191.4) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

VaporCmp It returns the vapor phase composition, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: mole fractions Because the output is an array, the general syntax for a programming language like Fortran is: call VaporCmp( FluidObj, InputSpec, Value1, Value2, y, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: y = FluidObj.VaporCmp( InputSpec, Value1, Value2, ErrorMsg) The general syntax for Excel is: y = VaporCmp( FluidObj, InputSpec, Value1, Value2) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: y = VaporCmp( A1, "PT", 1, 125) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

LiquidCmp It returns the liquid phase composition, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: mole fractions Because the output is an array, the general syntax for a programming language like Fortran is: call LiquidCmp( FluidObj, InputSpec, Value1, Value2, x, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: x = FluidObj.LiquidCmp( InputSpec, Value1, Value2, ErrorMsg) The general syntax for Excel is: x = LiquidCmp( FluidObj, InputSpec, Value1, Value2) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: x = LiquidCmp( A1, "PT", 1, 125) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

HeatCapV It returns the isochoric heat capacity, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kJ/kg.K The general syntax for programs like Excel and programming languages like Fortran is: cv = HeatCapV( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: cv = FluidObj.HeatCapV( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: cv = HeatCapV( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

HeatCapP It returns the isobaric heat capacity, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: kJ/kg.K The general syntax for programs like Excel and programming languages like Fortran is: cp = HeatCapP( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: cp = FluidObj.HeatCapP( InputSpec, Value1, Value2, ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: cp = HeatCapP( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

SoundSpeed It returns the speed of sound, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: m/s The general syntax for programs like Excel and programming languages like Fortran is: c = SoundSpeed( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: c = FluidObj.SoundSpeed( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: c = SoundSpeed( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Alpha It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: m2/s2 The general syntax for programs like Excel and programming languages like Fortran is:

= Alpha( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Alpha( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Alpha( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Beta It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: kg/m3 The general syntax for programs like Excel and programming languages like Fortran is: = Beta( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Beta( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Beta( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Chi It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: Nm4/kg2.K The general syntax for programs like Excel and programming languages like Fortran is:

= Chi( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Chi( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Chi( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Fi It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: 1/K The general syntax for programs like Excel and programming languages like Fortran is: = Fi( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Fi( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Fi( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Ksi It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: kg2/Nm4 The general syntax for programs like Excel and programming languages like Fortran is:

= Ksi( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Ksi( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Ksi( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Psi It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: s2/m2 The general syntax for programs like Excel and programming languages like Fortran is: = Psi( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Psi( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Psi( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Zeta It returns the partial derivative

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: kg.K/m3 The general syntax for programs like Excel and programming languages like Fortran is:

= Zeta( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Zeta( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Zeta( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Theta It returns the volumetric thermal expansion coefficient:

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: 1/K The general syntax for programs like Excel and programming languages like Fortran is: = Theta( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Theta( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Theta( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Kappa It returns the isothermal compressibility:

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: 1/bar The general syntax for programs like Excel and programming languages like Fortran is:

= Kappa( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Kappa( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Kappa( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Gamma It returns the fundamental derivative of gas dynamics:

, given 2 input thermodynamic variables as defined by the InputSpec argument. Default unit: The general syntax for programs like Excel and programming languages like Fortran is: = Gamma( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.Gamma( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Gamma( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Viscosity It returns the dynamic viscosity, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: Pa.s The general syntax for programs like Excel and programming languages like Fortran is: = Viscosity( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is:

= FluidObj.Viscosity( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = Viscosity(A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

ThermCond It returns the thermal conductivity, given 2 input thermodynamic variables as defined by the InputSpec argument.

Default unit: W/m.K The general syntax for programs like Excel and programming languages like Fortran is: = ThermCond( FluidObj, InputSpec, Value1, Value2, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: = FluidObj.ThermCond( InputSpec, Value1, Value2, ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

InputSpec:

String

Value1:

Double

Value2:

Double

ErrorMsg:

String

Excel Example: = ThermCond( A1, "PT", 12.53, 253.42) Notes: A1 is a cell containing the value returned by SetFluid. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description. The possible input specifications are listed in the table of available Thermodynamic State definitions.

Mmol It returns the molar mass of the working fluid.

Default unit: kg/mol The general syntax for programs like Excel and programming languages like Fortran is: M = Mmol( FluidObj, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: M = FluidObj.Mmol( ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

ErrorMsg:

String

Excel Example: M = Mmol( A1) Notes: A1 is a cell containing the value returned by SetFluid In Excel the error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

Tcrit It returns the critical temperature of the working fluid.

Default unit: °C The general syntax for programs like Excel and programming languages like Fortran is: T = Tcrit( FluidObj, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: T = FluidObj.Tcrit( ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

ErrorMsg:

String

Excel Example: T = Tcrit( A1) Notes: A1 is a cell containing the value returned by SetFluid In Excel the error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

Pcrit It returns the critical pressure of the working fluid.

Default unit: bar The general syntax for programs like Excel and programming languages like Fortran is: P = Pcrit( FluidObj, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: P = FluidObj.Pcrit( ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

ErrorMsg:

String

Excel Example: P = Pcrit( A1) Notes: A1 is a cell containing the value returned by SetFluid In Excel the error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

Tmin It returns the lower limit of the temperature validity range of the working fluid.

Default unit: °C The general syntax for programs like Excel and programming languages like Fortran is: T = Tmin( FluidObj, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: T = FluidObj.Tmin( ErrorMsg) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

ErrorMsg:

String

Excel Example: T = Tmin( A1) Notes: A1 is a cell containing the value returned by SetFluid In Excel the error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

Tmax It returns the upper limit of the temperature validity range of the working fluid.

Default unit: °C The general syntax for programs like Excel and programming languages like Fortran is: T = Tmax( FluidObj, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: T = FluidObj.Tmax( ErrorMsg) Arguments:

FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

ErrorMsg:

String

Excel Example: T = Tmax( A1) Notes: A1 is a cell containing the value returned by SetFluid In Excel the error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

AllInfo It returns the molar mass, critical point parameters and the temperature validity range of the working fluid at once.

Default units: Molar mass: kg/mol, Pressures: bar Temperatures: °C The general syntax for programs like Excel and programming languages like Fortran is: AllInfo( FluidObj, Mmol, Tcrit, Pcrit, Tmin, TMax, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.AllInfo(Mmol, Tcrit, Pcrit, Tmin, TMax, ErrorMsg) The general syntax for Excel is: AllInfo( FluidObj) Arguments: FluidObj:

In Excel it is the variable returned by SetFluid, in other programs or programming environments it is an object variable created at runtime.

Mmol:

Molar mass of the working fluid (Double)

Tcrit:

Critical temperature of the working fluid (Double)

Pcrit:

Critical pressure of the working fluid (Double)

Tmin:

Lower limit of the temperature validity range for the working fluid (Double)

Tmax:

Upper limit of the temperature validity range for the working fluid (Double)

ErrorMsg:

String

Excel Example: AllInfo( A1) Notes: A1 is a cell containing the value returned by SetFluid The function returns an array with 5 elements. The error message is not in the arguments list; in case an error occurs during the calculation, the value returned by the function is a string containing the error description.

SetUnits It defines the units to be used for the calculation of thermophysical properties in FluidProp. The use of this method in Excel is slightly different from its use in other client programs or programming environments. The syntax for defining the unit set for Excel is as follows: SetUnits(UnitSet, MassOrMole, Properties, Units) The syntax for programming languages like Fortran is: SetUnits( FluidObj, UnitSet, MassOrMole, Properties, Units) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.SetUnits( UnitSet, MassOrMole, Properties, Units) Important note In order to use the SetUnits method, an object variable must already have been created. The unit settings defined by the SetUnits method apply to all object variables that are used in the current application. In Excel the handling of fluid objects is different: the units must be defined for each working fluid defined with the SetUnits function. Hence the SetUnits function returns an Object Identifier to which the SetFluid method can refer. The provided example might further clarify the use of the SetUnits function in Excel. Arguments

FluidObj:

An object variable created at runtime.

UnitSet:

String indicating the name of the unit set to be used (see Table 1 in Available Units and Unit sets); It can be: - " ", "FP", or "FluidProp" (default) - "SI" - "Anglo-Saxon"

MassOrMole:

String that specifies the base unit for the selected properties; It can be: - "PerMass" or " " (default) - "PerMole" This modifier overwrites the specification possibly set with UnitSet.

Properties:

String indicating a list with one or more properties (separated by commas) for which the user wants to specify a unit different from the specified unit set. If no units are to be modified then a blank must be entered (" "). This modifier overwrites the unit specification of the specified properties in UnitSet and MassOrMole.

For example: to modify the units of pressure and temperature, Properties is: "P,T" Units:

String indicating a list with one or more units separated by commas in the same order as the property symbols in Properties. For the available units, see Table 2 in Available Units and Unit sets). The number of unit symbols must the same as the number of property symbols in Properties. If no properties have been specified in Properties then a blank (" ") must be entered. For example: to modify the units of pressure and temperature in pounds per square inch and degrees Fahrenheit, Units must be: "psia, °F".

Examples To specify the SI unit set for all units except for the pressure and temperature, which should be in bar and in Celsius degrees, enter: SetUnits( "SI", " ", "P,T", "bar,°C") To specify that all units of the specified unit set must be per mole instead of per mass, enter: SetUnits( "SI", "PerMole", "P,T", "bar,°C") To specify the FluidProp unit set for all units except for the enthalpy and the entropy, which have to be in Megajoules instead of Kilojoules and except for the pressure, which has to be in Newton per square meter, enter: SetUnits( " ", " ", "h, s, P", "MJ/kg, MJ/kg/K, N/m^2") To specify the Anglo-Saxon unit set for all units, except that all units have to be per mole instead of per pound, enter: SetUnits("Anglo-Saxon", "PerMole", " ", " ")

SetRefState It defines the reference state in case both the state definitions and the calculated properties must be non-dimensional. The syntax for programming languages like Fortran is: SetRefState ( FluidObj, T_ref, P_ref, ErrorMsg) The syntax for object oriented programming languages like VB, C++ and Matlab is: FluidObj.SetRefState( T_ref, P_ref, ErrorMsg) Notes In order to use the SetRefState method, an object variable must have been created. The reference state defined by the SetRefState method applies to all object variables that are used in the current application. This method is not available in Excel. Arguments FluidObj: An object variable created at runtime. T_ref: Reference temperature, double, unit: °C P_ref: Reference pressure, double, unit: bar ErrorMsg: Error message if reference state cannot be set, string Example To define the reference state to be T = 50 °C and P = 2 bar: SetRefState( 50, 2, ErrorMsg)

General Information The folder \ Sample Clients contains examples of client programs for the following programs or development environments: 1. The Mathworks Matlab Release 13 and 14 2. Microsoft Visual Basic 6 3. Compaq Visual Fortran 6.6C3 4. Intel Visual Fortran 9.0 5. Microsoft Visual C++ 6 6. Borland C++ 5.02 7. Borland C++ Builder 6.0 8. Microsoft Excel (2000, XP, ...) 9. Maple 9 In all examples the same calculations are executed. The Visual Basic and C++ Builder examples are applications based on MS-Windows scrollable windows, while the Fortran, Visual C++ and Borland C++ client are just console applications. Once FluidProp is installed properly, you can run all the executables. In order to adapt or extend an example you must have the corresponding programming system and open the enclosed project file. In order to use C++ Builder as we did, special installation steps should be accomplished. See the Readme.txt file in the C++ Builder folder. For the C++ examples the names of the source files are the same. However, the contents of the files are slightly different. This mainly has to do with the different way in which specific libraries available in the different programming environments handle string variables. Nevertheless, methods have been added in each example, so that FluidProp can be used in the same way.

Matlab and Simulink Examples Using FluidProp from Matlab is very easy. Look into the examples provided in: \Sample Clients\The MathWorks Matlab Try running the Test_FluidProp.m procedure. COM, the technology on which FluidProp is based, is (well enough) supported from Matlab Release 13 on. Still some little discrepancies from the standard in the Matlab implementation of COM make the SetFluid function a little different. The setting of the Model and the Fluid in Matlab is done with the SetFluid_M function (the _M denote a different function from the standard FluidProp SetFluid). The Mathworks told us that they will correct the bugs concerning the COM implementation in the next releases. General syntax: ErrorMsg = invoke(ObjID,'SetFluid_M', ModelName, nComp, Comp, Conc) Arguments:

ObjID:

Object variable as set by the actxserver Matlab function (e.g. FP = actxserver ('FluidProp.FluidProp');)

ModelName:

String (possible values: TPSI, RefProp, StanMix, GasMix, IF97)

nComp:

Integer

Comp():

String containing the comma separated list of the components (IMPORTANT: it must match exactly the string returned by GetFluidNames but it is not case dependent; both short and long names can be used.)

Conc():

Double Array. Dimensions: nComp rows X 2 columns. The second column is formed by 0's. This is a bug in the Matlab implementation of COM: arrays can only be passed if they are matrices and not vectors.

ErrorMsg:

String (value returned)

Examples: Model = 'GasMix'; nCmp = 5; Cmp = 'AR,CO2,H2O,N2,O2'; Cnc = [0.0092,0; 0.0003,0; 0.0101,0; 0.7729,0; 0.2075,0]; ErrorMsg = invoke(FP,'SetFluid_M',Model,nCmp,Cmp,Cnc) Model = 'RefProp'; nCmp = 1; Cmp = 'Toluene'; Cnc = [1, 0]; ErrorMsg = invoke(FP,'SetFluid_M',Model,nCmp,Cmp,Cnc) Any of the functions to compute a fluid property can be called with the same syntax, e.g.:

[Enthalpy,ErrorMsg] = invoke(FP,'Enthalpy','PT', P, T); Special note for Simulink: Unfortunately object variables cannot be passed between blocks so they must be stored in the Matlab Workspace. Look into the provided SimulinkExample.mdl file for a simple implementation.

VB client Example Using FluidProp from Visual Basic is very easy. Look into the example provided in: \Sample Clients\Microsoft Visual Basic

CVF client Example Using FluidProp from Compaq Visual Fortran is very easy. Look into the example provided in: \Sample Clients\Compaq Visual Fortran

IVF client Example Using FluidProp from Intel Visual Fortran for Windows is very easy. Look into the example provided in: \Sample Clients\Intel Visual Fortran

VC client Example Using FluidProp from Microsoft Visual C++ is very easy. Look into the example provided in: \Sample Clients\Microsoft Visual C++

BC client Example Using FluidProp from Borland C++ is very easy. Look into the example provided in: \Sample Clients\Borland C++ 5.02

BCB client Example Using FluidProp from Borland C++ Builder is very easy. Look into the example provided in: \Sample Clients\Borland C++ Builder

Maple Example Using FluidProp from Maple is very easy. Look into the example provided in: \Sample Clients\Maple

Installing the FluidProp Excel Add-In Choose Add-in from the Tools Menu:

Browse your computer and select the file FluidProp.xla in the FluidProp folder:

Now a FluidProp category appears every time you use the Excel Function Wizard:

Excel Examples Using FluidProp from Excel is very easy. Look into the examples provided in: \Sample Clients\Microsoft Excel Excel Sample.xls shows examples of FluidProp functions for each available library. The folder \Sample Thermodynamic Diagrams contains T-s and PTx diagrams realized with FluidProp as a demonstration of the FluidProp capabilities. Example: In one cell enter (e.g. A1), set the library and the fluid by inserting the SetFluid function: =SetFluid(ModelName, FluidName) e.g: =SetFluid("TPSI","Butane") for a custom defined mixture: =SetFluid("RefProp",{"Butane","Propane"},{0.5,0.5}) To calculate properties, in another cell insert a function with the appropriate arguments: =Enthalpy($A$1,"Tq",50,1) The first argument is the address of the cell in which the SetFluid function was entered. All arguments can be cell addresses. Example with different units: In case different units are to be used, then in one cell (e.g. A2), specify these units by inserting the SetUnits function: =SetUnits(UnitSet, MassOrMole, Properties, Units) e.g: =SetUnits( "SI", "PerMole", "P,T", "bar,°C") Then the fluid can be entered: e.g. =SetFluid("TPSI","Butane"," ",$A$2) for a custom defined mixture: =SetFluid("RefProp",{"Butane","Propane"},{0.5,0.5},$A$2) The last argument is the address of the cell in which the SetUnits function was entered. Remark: In this help file we assume the decimal symbol to be a period ("."), the digital grouping symbol a space (e.g. 10 000) and the list separator a comma (e.g. "CH4","H2O", "N2"). The correct symbol depends on your Regional and Language Options (see Control Panel of the MS-Windows operating system) or your Excel settings (in Excel XP: Tools -> Options: International tab). You can also open the file Excel Sample.xls in the folder Client samples\Microsoft Excel to check which symbols your system is using.