Question

An air conditioner is a refrigerator with the inside of the house acting as the cold reservoir and the outside atmosphere acting as the hot reservoir. Assume that an air conditioner consumes 1.20×103W of electrical power and that it can be idealized as a reversible Carnot refrigerator. The coefficient of performance of this device is 1.65. Assume that the interior temperature is 65.0 ∘F and the exterior temperature is 99.0 ∘F. The corresponding absolute temperature values for 65.0 and 99.0 degrees are 291.48 K and 310.37 K, respectively.

a) Calculate ΔS per day for the air-conditioned house.

Express your answer with the appropriate units.

b) Calculate ΔSsur per day for the air-conditioned house.

c) Calculate ΔStot per day for the air-conditioned house.

Answer 1