An air conditioner is used to keep the interior of a house at a temperature of 2

Question

An air conditioner is used to keep the interior of a house at a temperature of 23?C while the outside temperature is 31?C. The heat leaks into the house at the rate of 15kW .

a. Does the entropy of the universe increase, decrease, or stay the same as the air conditioner keeps the imperfectly insulated house cool?

b. Explain why?

c. What is the rate at which the entropy of the universe changes during this process?

For part A, I said the entropy of the universe would increase but I don't really know why. Any takers?

Explanation / Answer

a)increase

b) in all irreversible processes the entropy increases .

c) 15*1000/(273+23)=51W/K

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