A refrigerator removes 1.5 kJ from the cold space using 1 kJ work input. How
much energy goes into the kitchen and what is its coefficient of performance?
C.V. Refrigerator. The energy QH goes into the kitchen air.
Energy Eq.: QH = W + QL = 1 + 1.5 = 2.5 kJ
COP: β =
QL
W = 1.5 / 1 = 1.5