Question

Imagine an ideal Carnot freezer that operates between the house at a temperature of TH =...

Imagine an ideal Carnot freezer that operates between the house at a temperature of TH = 47oC and the inside of the freezer at a temperature of TL. This refrigerator is rated to do work at 300W. If the ideal COP for the freezer is 4. (for parts a, b, c use COP as 4)

a) Calculate TL?

b) How much heat will be taken from the freezer per second?

c) How much heat will be going outside the freezer (QH) per second?

d) When the freezer is working at a non-ideal COP, it takes 5 minutes to freeze 800 g of water at 0oC. Calculate the non-ideal COP of the freezer. Heat of fusion for water 3.33x105 J/kg

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Answer #1

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