1A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1000 lbf/in.2, and saturated vapor enters the turbine (state 1). The condenser pressure is 1.2 lbf/in.2 The mass flow rate of steam is 1 x 107 lb/h. Data at key points in the cycle are provided in the accompanying table. State p (lbf/in.2) h (Btu/lb) ----------------------------------------- 1 1000 1192 2 1.2 783.4 3 1.2 416.3 4 1000 542.5 Determine: (a) the percent thermal efficiency. (b) the back work ratio. (c) the net power developed, in Btu/h. (d) the rate of heat transfer to the working fluid passing through the boiler, in Btu/h.
1A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1000 lbf/in.2, and saturated vapor enters the turbine (state 1). The condenser pressure is 1.2 lbf/in.2 The mass flow rate of steam is 1 x 107 lb/h. Data at key points in the cycle are provided in the accompanying table. State p (lbf/in.2) h (Btu/lb) ----------------------------------------- 1 1000 1192 2 1.2 783.4 3 1.2 416.3 4 1000 542.5 Determine: (a) the percent thermal efficiency. (b) the back work ratio. (c) the net power developed, in Btu/h. (d) the rate of heat transfer to the working fluid passing through the boiler, in Btu/h.
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1A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1000 lbf/in.2, and saturated vapor enters the turbine (state 1). The condenser pressure is 1.2 lbf/in.2 The mass flow rate of steam is 1 x 107 lb/h. Data at key points in the cycle are provided in the accompanying table.
|
State
|
p (lbf/in.2)
|
h (Btu/lb)
|
|---|---|---|
|
-----------------------------------------
|
||
|
1
|
1000
|
1192
|
|
2
|
1.2
|
783.4
|
|
3
|
1.2
|
416.3
|
|
4
|
1000
|
542.5
|
Determine:
(a) the percent thermal efficiency.
(b) the back work ratio.
(c) the net power developed, in Btu/h.
(d) the rate of heat transfer to the working fluid passing through the boiler, in Btu/h.
(a) the percent thermal efficiency.
(b) the back work ratio.
(c) the net power developed, in Btu/h.
(d) the rate of heat transfer to the working fluid passing through the boiler, in Btu/h.
Transcribed Image Text:A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 100O Ibf/in.?, and saturated
vapor enters the turbine (state 1). The condenser pressure is 1.2 Ibf/in.2 The mass flow rate of steam is 1 x 107 Ib/h. Data at key points
in the cycle are provided in the accompanying table.
State
p (Ibf/in.2)
h(Btu/lb)
1
1000
1192
1.2
783.4
1.2
416.3
4
1000
542.5
Determine:
(a) the percent thermal efficiency.
(b) the back work ratio.
(c) the net power developed, in Btu/h.
(d) the rate of heat transfer to the working fluid passing through the boiler, in Btu/h.
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