Problem 9.27 Consider a cold air-standard Diesel cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.5. For k = 1.4, cv = 0.172 Btu/(lb R), and cp = 0.240 Btu/(lb R), determine the net heat transfer per unit mass in Btu/lb State 1 2 3 4 T (°R) p (lbf/in.²) 540 14.7 1637 713.0 3274 713.0 1425.1 38.8 Fig. 9.5 p-v and T-s diagrams of the air-standard Diesel cycle. v (ft3/lb) 13.60 0.85 1.70 13.60 N a S=C 3 S=C b V 2 b p=c V=C T a
Problem 9.27 Consider a cold air-standard Diesel cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.5. For k = 1.4, cv = 0.172 Btu/(lb R), and cp = 0.240 Btu/(lb R), determine the net heat transfer per unit mass in Btu/lb State 1 2 3 4 T (°R) p (lbf/in.²) 540 14.7 1637 713.0 3274 713.0 1425.1 38.8 Fig. 9.5 p-v and T-s diagrams of the air-standard Diesel cycle. v (ft3/lb) 13.60 0.85 1.70 13.60 N a S=C 3 S=C b V 2 b p=c V=C T a
Elements Of Electromagnetics
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Problem 9.27
Consider a cold air-standard Diesel cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.5.
For k = 1.4, cv = 0.172 Btu/(lb R), and cp = 0.240 Btu/(lb R), (a) determine the net heat transfer per unit mass in Btu/lb. (b) Determine the net work per unit mass in Btu/lb. (c) Determine the cycle thermal efficiency (%)
Transcribed Image Text:Problem 9.27
Consider a cold air-standard Diesel cycle. Operating data at principal
states in the cycle are given in the table below. The states are numbered
as in Fig. 9.5.
For k = 1.4, cv = 0.172 Btu/(lb R), and cp = 0.240 Btu/(lb R), determine the
net heat transfer per unit mass in Btu/lb
State
1
2
3
4
T (°R) p (lbf/in.²)
540
14.7
1637
713.0
3274
713.0
1425.1
38.8
Fig. 9.5 p-v and T-s
diagrams of the air-standard
Diesel cycle.
v (ft3/lb)
13.60
0.85
1.70
13.60
N
a
S=C
3
S=C
b
V
2
b
p=c
V=C
T
a
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