An ideal heat pump is used to maintain the inside temperature of a house at Tin...
An ideal heat pump is used to maintain the inside temperature of a house at Tin = 20 ∘C when the outside temperature is Tout. Assume that when it is operating, the heat pump does work at a rate of 1700 W . Also assume that the house loses heat via conduction through its walls and other surfaces at a rate given by (650W/∘C)(Tin−Tout).
For what outside temperature would the heat pump have to operate at all times in order to maintain the house at an inside temperature of 20 ∘C?
If the outside temperature is 7 ∘C, what percentage of the time does the heat pump have to operate in order to maintain the house at an inside temperature of 20 ∘C?
Express your answer using two significant figures.
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An ideal heat pump is used to maintain the inside temperature of
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A heat pump is to be used to heat a house in winter and then
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maintained at 20oC. Heat transfer through walls and roof is
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