Question #302207

Determine the COP of a heat pump that supplies energy to a house at a rate of 8000 kJ/h for each kW of electric power it draws. Also, determine the rate of energy absorption from the outdoor air.

1
Expert's answer
2022-02-28T11:05:02-0500

Solution;

Given;

Q˙=8000kJ/h\dot Q =8000kJ/h

W=1kWW=1kW

COPHP=QW=(8000kJ/h1kW)(1kW3600kJ/h)=2.22COP_{HP}=\frac{Q}{W}=(\frac{8000kJ/h}{1kW})(\frac{1kW}{3600kJ/h})=2.22

Q˙L=Q˙HPW˙\dot Q_L=\dot Q_{HP}-\dot W

Q˙L=80001(3600)=4400kJ/h\dot Q_L=8000-1(3600)=4400kJ/h


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