Answer
$COP_{HP}=2.22$
$\dot{Q}_L=4400\ kJ/h$
Work Step by Step
$COP_{HP}=\dot{Q}_H/\dot{W}_i$
Given $\dot{Q}_H=8000\ kJ/h,\ \dot{W}_i=1\ kW$
$COP_{HP}=2.22$
$\dot{Q}_H=\dot{W}_e+\dot{Q}_L$
$\dot{Q}_L=4400\ kJ/h$
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