A Carnot air conditioner has a coefficient of performance of 17.0 and removes 72.0 MJ of heat from the interior of a house every hour. How much power does it consume?
A) 3.14 MW
B) 1320 W
C) 520 kW
D) 1180 W
E) 1.25 MW

Question

Quizplus · Accepted Answer

The power consumed by the air conditioner can be calculated using the formula: Power = Heat removed / COP. Here, Heat removed = 72.0 MJ/hour = 72,000,000 J/hour = 20,000 J/s (since 1 hour = 3600 seconds), and COP = 17.0. Therefore, Power = 20,000 J/s / 17.0 = 1176.47 W, which is approximately 1180 W.

A Carnot Air Conditioner Has a Coefficient of Performance of 17.0