Sep

17

Heat Pump and coefficient of performance?

Filed Under HVAC 

dzilla169 asked:

A heat pump delivers 28.0 kW to heat a house. The outside temperature is -6.0°C and the inside temperature of the hot-air supply for the heating fan is 42.0°C. What is the coefficient of performance of a Carnot heat pump operating between these temperatures? Note that a heat pump is like a refrigerator with the output of the hot reservoir serving as the source of heat.

Also what formula did you use? I have been doing
COP=Qh/W but I know I am messing up somewhere.

Question posted courtesy of: Douglas

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    • Comments

    One Response to “Heat Pump and coefficient of performance?”

    1. rijim2001 on September 18th, 2007 8:40 am

      The carnot heat pump operating between these temperatures [thot tcold] thot 100 [31515 26715] 31515 x100 1523.