A steam turbine operates receiving steam from the boiler at 2000 psia and 1000 F. The steam expands to 600 psia where there is an extraction port. The temperature of the extracted steam is 750 F. 25% of the entering steam flow is extracted and sent to a feedwater heater. The remaining steam inside the turbine expands to 1.0 psia, the condenser pressure. The quality of the steam exiting the turbine to the condenser is 85%. Calculate the isentropic efficiency of the turbine.

A steam turbine operates receiving steam from the boiler at 2000 psia and 1000 F. The steam expands to 600 psia where there is an extraction port. The temperature of the extracted steam is 750 F. 25% of the entering steam flow is extracted and sent to a feedwater heater. The remaining steam inside the turbine expands to 1.0 psia, the condenser pressure. The quality of the steam exiting the turbine to the condenser is 85%. Calculate the isentropic efficiency of the turbine.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

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