Question

A heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 11.7 kW. The coefficient of performance of the cycle is 2.8. Evaluating electricity at $0.10 per kW ⋅ h, determine the cost of electricity during the heating season when the heat pump operates for 1800 hours.

Answer 1

The cost:

$$C=cPt/r=0.1·11.7·1800/2.8=\$2106.$$