Methane, flowing at 17.5 kmol/hr, is compressed in a steady-state adiabatic compressor (87%efficient) from 0.1013 MPa and -240°F to 0.4 MPa. What is the work required in kJ per mole ofmethane? What is the work required in kW? What is the rate of entropy generation in kJ/K hr?Use the provided diagram 40Enthalpy (Btu)(lbm"150080120160200240280320360400440METHANEPRESSURE - ENTHALPY1000480520560600640680800DIAGRAM1500V =0.50V = specific volume (ft)°(lbm)S = entropy (Btu)(Ibm)"(R)"All temperatures (°F)7006000.60500-120°10000.80800400-140°1.007006003001.25500-160°1.50400200Datum:2.00For saturated liquid at-280(°F)Enthalpy and Entropy 03002.503.001.45¥1.501.55100-200(°F)2004.0080705.0060-220°1.606.00100508.00 804070| 10.060-240°1.753012.5501.8015.0401.8520.0301.90-260°30.01.9520102.00/40.010Temperature (°F)Pressure (psia)20Saturated liquid-115.8S= 0.85X06'0Saturated vapor1.05-240°-220°-200°-180°1.201.25-140°-120°1.30008-.09-1.351.40-20°.09120°140°160°180°1.65200°220°240°1.70480°Pressure (psia)

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Answered: Methane, flowing at 17.5 kmol/hr, is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Methane, flowing at 17.5 kmol/hr, is compressed in a steady-state adiabatic compressor (87%
efficient) from 0.1013 MPa and -240°F to 0.4 MPa. What is the work required in kJ per mole of
methane? What is the work required in kW? What is the rate of entropy generation in kJ/K hr?
Use the provided diagram

40
Enthalpy (Btu)(lbm"
1500
80
120
160
200
240
280
320
360
400
440
METHANE
PRESSURE - ENTHALPY
1000
480
520
560
600
640
680
800
DIAGRAM
1500
V =
0.50
V = specific volume (ft)°(lbm)
S = entropy (Btu)(Ibm)"(R)"
All temperatures (°F)
700
600
0.60
500
-120°
1000
0.80
800
400
-140°
1.00
700
600
300
1.25
500
-160°
1.50
400
200
Datum:
2.00
For saturated liquid at-280(°F)
Enthalpy and Entropy 0
300
2.50
3.00
1.45
¥1.50
1.55
100
-200(°F)
200
4.00
80
70
5.00
60
-220°
1.60
6.00
100
50
8.00 80
40
70
| 10.0
60
-240°
1.75
30
12.5
50
1.80
15.0
40
1.85
20.0
30
1.90
-260°
30.0
1.95
20
10
2.00/
40.0
10
Temperature (°F)
Pressure (psia)
20
Saturated liquid
-115.8
S= 0.85
X06'0
Saturated vapor
1.05
-240°
-220°
-200°
-180°
1.20
1.25
-140°
-120°
1.30
008-
.09-
1.35
1.40
-20°
.09
120°
140°
160°
180°
1.65
200°
220°
240°
1.70
480°
Pressure (psia)

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