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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. Eighty-eight 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 Determine: Steam generator 7p = 89% PL=500 lbfin.² 7₁ = 800°F A Heat exchanger Pump (3) (1-y) 7-85% Openeras P4=500 Gin,² saturated liquid Py = 10 lbl/in.² saturated liquid Turbine-W₁ P=10 lb/in.² Condenser (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. Eighty-eight 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 Determine: Steam generator 7p = 89% PL=500 lbfin.² 7₁ = 800°F A Heat exchanger Pump (3) (1-y) 7-85% Openeras P4=500 Gin,² saturated liquid Py = 10 lbl/in.² saturated liquid Turbine-W₁ P=10 lb/in.² Condenser (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
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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. Eighty-eight 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 Determine: Steam generator p=89% PL=500 lbfin.² = 800°F A1 Heat exchanger Pump I (1-y) (0) 7 - 85% Openers P4=500 bin2 saturated liquid Py=10 lbl/in.² saturated liquid Turbine W P₂ = 10 lb/in² +2 vo Condenser (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.
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. Eighty-eight 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 Determine: Steam generator p=89% PL=500 lbfin.² = 800°F A1 Heat exchanger Pump I (1-y) (0) 7 - 85% Openers P4=500 bin2 saturated liquid Py=10 lbl/in.² saturated liquid Turbine W P₂ = 10 lb/in² +2 vo Condenser (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.
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