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B A heat pump can use a maximum of 2 5 kW power for maintaining...

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B A heat pump can use a maximum of 2 5 kW power for maintaining a house at 20 C during winter The rate of heat transfer from the roof and walls is 3300 kJ h per degree temperature difference between inside and outside The COP is 60 of a reversible heat pump Determine the minimum outside temperature for which the heat pump can meet the heating requirements of the house

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