A Carnot heat engine receives heat from a reservoir at 900°C at a rate of 800 kJ/min and rejects the waste heat to the ambient air at 27°C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at 5°C and transfers it to the same ambient air at 27°C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air.

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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A Carnot heat engine receives heat from a
reservoir at 900°C at a rate of 800 kJ/min and
rejects the waste heat to the ambient air at
27°C. The entire work output of the heat
engine is used to drive a refrigerator that
removes heat from the refrigerated space at -
5°C and transfers it to the same ambient air
at 27°C. Determine (a) the maximum rate of
heat removal from the refrigerated space and
(b) the total rate of heat rejection to the
ambient air.
Transcribed Image Text:A Carnot heat engine receives heat from a reservoir at 900°C at a rate of 800 kJ/min and rejects the waste heat to the ambient air at 27°C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at - 5°C and transfers it to the same ambient air at 27°C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air.
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