A heat pump is used to keep a house warm at 22C. How much work is required

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A heat pump is used to keep a house warm at 22°C. How much work is required of the pump to deliver 3100 J of heat into the house if the outdoor temperature is?

(a) 0°C,

(b) -15°C Assume a COP of 3.0.

(c) Redo for both temperatures, assuming an ideal (Carnot) coefficient of performance COP = TH/(TH ­– TL).

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