Water is the working fluid in a regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steamenters the turbine at 1400 lbf/in.? and 1150°F and expands to 500 lbf/in.?, where some of the steam is extracted and diverted to theclosed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 Ibf/in.?undergoes a throttlingprocess to 120 lbf/in.? as it passes through a trap into the open feedwater heater.The feedwater leaves the closed feedwater heater at 1400 lbf/in.? and a temperature equal to the saturation temperature at 500Ibf/in.? The remaining steam expands through the second-stage turbine to 120 lbf/in.?, where some of the steam is extracted anddiverted to the open feedwater heater operating at 120 lbf/in.?Saturated liquid exits the open feedwater heater at 120 lbf/in.?The remaining steam expands through the third-stage turbine to the condenser pressure of 5 Ibf/in.2 The turbine stages and thepumps each operate adiabatically with isentropic efficiencies of 85%. Flow through the condenser, closed feedwater heater, openfeedwater heater, and steam generator is at constant pressure. The net power output of the cycle is 1x 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.

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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.

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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