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The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.², 800°F, at a rate of 4.4 x 105 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.² and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.² Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.² before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let To-60°F, po-14.7 lbf/in.² Steam generator 7-89% Pl=500 lbfin² 7₁=800°F m₂ Heat exchanger Pump I (1-y) (9) 7=85% Qprocess P-500 lbfin² saturated liquid P=10 lb/in² saturated liquid Turbine P=10 lb/in.² Condenser Determine: (a) the magnitude of the process heat production rate, in Btu/h. (b) the magnitude of the rate of exergy output, in Btu/h, as net work. (c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam generator. (d) the magnitude of the rate of exergy output, in Btu/h, with the process heat. (e) the magnitude of the rate of exergy loss, in Btu/h, from the working fluid passing through the condenser. (f) the sum of the rate of exergy destrution, in Btu/h, in the turbine, process heat exchager, trap, and pump.

The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.², 800°F, at a rate of 4.4 x 105 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.² and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.² Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.² before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let To-60°F, po-14.7 lbf/in.² Steam generator 7-89% Pl=500 lbfin² 7₁=800°F m₂ Heat exchanger Pump I (1-y) (9) 7=85% Qprocess P-500 lbfin² saturated liquid P=10 lb/in² saturated liquid Turbine P=10 lb/in.² Condenser Determine: (a) the magnitude of the process heat production rate, in Btu/h. (b) the magnitude of the rate of exergy output, in Btu/h, as net work. (c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam generator. (d) the magnitude of the rate of exergy output, in Btu/h, with the process heat. (e) the magnitude of the rate of exergy loss, in Btu/h, from the working fluid passing through the condenser. (f) the sum of the rate of exergy destrution, in Btu/h, in the turbine, process heat exchager, trap, and pump.

Elements Of Electromagnetics
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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The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.², 800°F, at a rate of 4.4 x 105 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.² and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.² and passes through a trap before entering the condenser at 10 lbf/in.² Saturated liquid exits the condenser at 10 lbf/in.²2 and is pumped to 500 lbf/in.² before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let To -60°F, po -14.7 lbf/in.² Determine: Part A Steam generator 7-89% 0... Pl=500 lbflin² T₁=800°F Heat exchanger Pump m₁ 1 (1-y) Btu/h (y) 7=85% process P4-500 lbf/in² saturated liquid P=10 lb/in² saturated liquid Determine the magnitude of the process heat production rate, in Btu/h. (a) the magnitude of the process heat production rate, in Btu/h. (b) the magnitude of the rate of exergy output, in Btu/h, as net work. (c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam generator. (d) the magnitude of the rate of exergy output, in Btu/h, with the process heat. (e) the magnitude of the rate of exergy loss, in Btu/h, from the working fluid passing through the condenser. (f) the sum of the rate of exergy destrution, in Btu/h, in the turbine, process heat exchager, trap, and pump. Turbine P₂=10 lb/in.² vo Condenser
Transcribed Image Text:The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.², 800°F, at a rate of 4.4 x 105 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.² and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.² and passes through a trap before entering the condenser at 10 lbf/in.² Saturated liquid exits the condenser at 10 lbf/in.²2 and is pumped to 500 lbf/in.² before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let To -60°F, po -14.7 lbf/in.² Determine: Part A Steam generator 7-89% 0... Pl=500 lbflin² T₁=800°F Heat exchanger Pump m₁ 1 (1-y) Btu/h (y) 7=85% process P4-500 lbf/in² saturated liquid P=10 lb/in² saturated liquid Determine the magnitude of the process heat production rate, in Btu/h. (a) the magnitude of the process heat production rate, in Btu/h. (b) the magnitude of the rate of exergy output, in Btu/h, as net work. (c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam generator. (d) the magnitude of the rate of exergy output, in Btu/h, with the process heat. (e) the magnitude of the rate of exergy loss, in Btu/h, from the working fluid passing through the condenser. (f) the sum of the rate of exergy destrution, in Btu/h, in the turbine, process heat exchager, trap, and pump. Turbine P₂=10 lb/in.² vo Condenser
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