227. When a man returns to his well-sealed house on a summer day, he finds that the house is

at 32°C. He turns on the air conditioner, which cools the entire house to 20°C in 15 min. If COP

of the air conditioner system is 2.5, determine the power drawn by the air conditioners.

Assume the entire mass within the house is equivalent to 800 kg of air for which c = 0.72 kJ/kg -

°C.

A. 7.08 kW B. 3.07 kW C. 19.2 kW D. 12.08 kW