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UMUECHEM BOOSTER COMPRESSOR SELECTION AND SIZING - BASE CASE - FIRST STAGE A.
PROCESS PARAMETERS:
DESCRIPTION
1
STAGE CALCULATIONS
SUCTION
DISCHARGE
Flow Rates
1 SYMBOL
Standard MMscf/d Standard m3/h Standard m3/s
Discharge Pressure Suction Pressure (ps) Suction Pressure (ps)(pd) 2nd formular
Stage
qs(st)
VALUE
SYMBOL
6.9
6.9 8139.86 qd(st)
3.431
Pressure Ratio - r
Disch. Temp (Td)
11.998
3.636
348.442
11.942
Pressures (Bar) Gauge Absolute
2.5 Ps
10.2 Pd
3.5
0.700
494.768
2.26 COMPRESSOR POWER
2
Stage Specific Power Stage Shaft Absorbed Absorbed (from chart Power (KW) 1.2.3-4b)
VALUE
8139.86 2.26
3.300
Discharge Pressure (pd)-2nd formular
[kW]
Total Shaft Power (Including 5% for data inacuracies)
519.51
Total Driver Power (Including 4% for transmission losses)
540.29
11.2 GAS ENGINE DERATING
3
Temperatures 39.6 Ts
312.6
Td
410.8
Z
Zs
0.9892
Zd
0.9871
Av. Comp. Fac
Zav
0.9521
Minimum
np
0.800
Maximum
np
1.000
K
4
5
137.8
Altitude (-3.5% ISO for every 300 m above 150 m)
Sea Level
0.00
Temperature (-1.8% ISO for every 50C above 300C)
4.68%
565.57
Stage Polytropic Head [Hp]
Compressibility Factor
214.29
No. of Impellers
7.14
Polytropic Eff. (table 1.2.3-1)
Average np
NOTES 1 The calculations here presented are done in line with procedure outlined
0.900
in Production Handbook Vol. 9, Chapter 1, Section 1.2.3, pages1-89 to 1-107.
6
7
Adiabatic exponent for gas (Cp/Cv) Minimum
Cp/Cv
1.220
Maximun
Cp/Cv
1.250
Average
k
1.235
Polytropic exponent for gas
n
1.268
n-1
0.268
n/(n-1)
4.730
(n-1)/n
B.
2
Indicates selected option in line with guidelines as stated in Production Handbook.
3
Shell Petroleum Development Company of Nigeria
C
o
Indicates Manual data input.
0.211
GENERAL CALCULATIONS
1
Actual Vol. [m3/s]
2
Actual press. (bar)
0.702
qd
0.288
ps1(large) ps1(small)
3.431
pdN (large)
11.592
3.300
pdN (small)
11.550
3
Overall pressure ratio (pdN/ps1)
ro
3.51
4
Max. Stage Ratio
rs
3.64
5
No. of Stages (Logro/Logrs)
Q
6
Theoretical Stage Press. Ratio
rQ
AGS-TEF-OTU-M14-00001-000
0.97
Nearest Whole No.
Calculation Spreadsheet
qs
1
3.51
1 of 2
Mechanical Datasheet Otumara Main Compressor Package
UMUECHEM BOOSTER COMPRESSOR SELECTION AND SIZING - BASE CASE - SECOND STAGE A.
PROCESS PARAMETERS:
DESCRIPTION
1
STAGE CALCULATIONS
SUCTION
DISCHARGE
Flow Rates:
1
SYMBOL Standard MMscf/d Standard m3/h Standard m3/s
Discharge Pressure Suction Pressure (ps) Suction Pressure (ps)(pd) 2nd formular
Stage
qs(st)
VALUE
SYMBOL
19.9
19.9 23475.84 qd(st)
10.784
Pressure Ratio - r
Disch. Temp (Td)
18.398
1.706
286.969
18.126
Pressures (Bar) Gauge Absolute
10 Ps
16.2 Pd
11
0.255
525.301
6.52 COMPRESSOR POWER
2
Stage Specific Power Stage Shaft Absorbed Absorbed (from Chart Power (KW) 1.2.3-4a)
VALUE
23475.84 6.52
10.800
Discharge Pressure (pd)-2nd formular
[kW]
Total Shaft Power (Including 5% for data inacuracies)
551.57
Total Driver Power (Including 4% for transmission losses)
573.63
17.2 GAS ENGINE DERATING
3
Temperatures 42.9 Ts
315.9
Z
Zs
0.9705
Av. Comp. Fac
Zav
0.9400
Minimum
np
0.50
Maximum
np
1.00
K
4
5
81.6 Td
354.6
Zd
0.9694
Altitude (-3.5% ISO for every 300 m above 150 m)
Sea Level
0.00
Temperature (-1.8% ISO for every 50C above 300C)
4.68%
600.47
Compressibility Factors
Polytropic Efficiency (table 1.2.3-1)
Average np
NOTES 1 The calculations here presented are done in line with procedure outlined
0.75
in Production Handbook Vol. 9, Chapter 1, Section 1.2.3, pages1-89 to 1-107.
6
7
Adiabatic exponent for gas (Cp/Cv)
Indicates Manual data input. 2
Minimum
Cp/Cv
1.270
Maximun
Cp/Cv
1.280
Average
k
1.275
Polytropic exponent for gas
n
1.40
n-1
0.40
n/(n-1)
3.48
(n-1)/n
B.
3
Indicates selected option in line with guidelines as stated in Production Handbook.
Shell Petroleum Development Company of Nigeria
C
o
0.29
GENERAL CALCULATIONS
1
Actual Vol. [m3/s]
2
Actual press. (bar)
0.639
qd
0.458
ps1(small) ps1(large)
10.784
pdN (large)
17.802
10.800
pdN (small)
17.550
3
Overall pressure ratio (pdN/ps1)
ro
1.65
4
Max. Stage Ratio
rs
1.71
5
Number of Stages (Logro/Logrs)
Q
6
Theoretical Stage Press. Ratio
rQ
AGS-TEF-OTU-M14-00001-000
0.93
Nearest Whole No.
Calculation Spreadsheet
qs
1
1.65
2 of 2
Mechanical Datasheet Otumara Main Compressor Package