The AC can be run backwards and used as a heat pump during cool houston mornings in the months September-November, and February-April. Suppose that the outside is 40 degrees F and the inside temperature is to be maintained at 70 degrees F. What is the minimum electrical work that must be performed on the compression for every kJ of heat liberated in the house?
The AC can be run backwards and used as a heat pump during cool houston mornings in the months September-November, and February-April. Suppose that the outside is 40 degrees F and the inside temperature is to be maintained at 70 degrees F. What is the minimum electrical work that must be performed on the compression for every kJ of heat liberated in the house?
College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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#7 The AC can be run backwards and used as a heat pump during cool houston mornings in the months September-November, and February-April. Suppose that the outside is 40 degrees F and the inside temperature is to be maintained at 70 degrees F. What is the minimum electrical work that must be performed on the compression for every kJ of heat liberated in the house?
Expert Solution
Step 1 EXPLAINATION
Here the AC is a carnot engine. It can be reversed to use as a heat pump.
here TH is the temperature of hot reservoir
TC is the temperature of cold reservoir
QH is the heat transfer from hot reservoir
QC is the heat transfer from cold reservoir
W is the work done
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