Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 Ibf/in.? and 1000°F and expands to 120 lbf/in.?, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.? 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.? 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 Ib/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency.

Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 Ibf/in.? and 1000°F and expands to 120 lbf/in.?, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.? 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.? 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 Ib/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

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1800 lb/in² and 1200°F and expands to 120 lb/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lb/in.² The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb/in.² Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lb/in. The mass flow rate of steam entering the first stage of the turbine is 2.30x10 lb/h. Step 1 Determine the net power output of the cycle, in Btu/hr. cycle= Save for Later Btu/h Attempts: 0 of 4 used Submit Answer
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