Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.² Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 10⁹ Btu/h. Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400
lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater
operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.²
Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 10° Btu/h.
Determine for the cycle:
(a) the mass flow rate of steam entering the first stage of the turbine, in lb/h.
(b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator.
(c) the percent thermal efficiency.
Part A
Determine for the cycle the mass flow rate of steam entering the first stage of the turbine, in lb/h.
Transcribed Image Text:Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.² Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 10° Btu/h. Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency. Part A Determine for the cycle the mass flow rate of steam entering the first stage of the turbine, in lb/h.
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