A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1400 lbf/in., and saturated vapor enters the turbine (state 1). The condenser pressure is 1.2 lbf/in.² The mass flow rate of steam is 5.5 x 105 lb/h. Data at key points in the cycle are provided in the accompanying table. Determine: State p (lbf/in.2) h (Btu/lb) 1 2 3 4 1400 1.2 1.2 1400 1174 758.3 446.5 598.8 (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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A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1400 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 5.5 x 106 lb/h. Data at key
points in the cycle are provided in the accompanying table.
Determine:
n =
i 72.2705
State p (lbf/in.2) h (Btu/lb)
%
1
2
32₂
4
1400
1.2
1.2
1400
1174
(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.
Determine the percent thermal efficiency.
758.3
446.5
598.8
Transcribed Image Text:A Carnot vapor power cycle operates with water as the working fluid. Saturated liquid enters the boiler at 1400 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 5.5 x 106 lb/h. Data at key points in the cycle are provided in the accompanying table. Determine: n = i 72.2705 State p (lbf/in.2) h (Btu/lb) % 1 2 32₂ 4 1400 1.2 1.2 1400 1174 (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. Determine the percent thermal efficiency. 758.3 446.5 598.8
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