A residential heat pump uses the ground as an energy source. At a particular ope

Question

A residential heat pump uses the ground as an energy source. At a particular operating condition, the heat pump delivers energy at a rate of 13.37 kW to the heated interior while simultaneously removing energy from the ground at a rate of 10.05 kW. Determine (a) the electrical power required to operate the heat pump and (b) the coefficient of performance. A residential heat pump uses the ground as an energy source. At a particular operating condition, the heat pump delivers energy at a rate of 13.37 kW to the heated interior while simultaneously removing energy from the ground at a rate of 10.05 kW. Determine (a) the electrical power required to operate the heat pump and (b) the coefficient of performance.

Explanation / Answer

a)the electrical power is

P = P1 - P2

where P1 = 13.37 kW and P2 = 10.05 kW

b)the coefficient of performance is

K = (P2/P1 - P2)

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