Refrigeration - Work required to run heat pump

AI Thread Summary
The discussion revolves around calculating the performance of a heat pump used to maintain a room temperature of 23°C against an outside temperature of 32°C. The reversible coefficient of performance (COP) is sought to determine the efficiency of the heat pump, with a specific focus on the maximum COP. The minimum work required to operate the heat pump is calculated using the formula COP = Ql/Win. Additionally, participants are trying to identify the maximum ambient temperature at which the heat pump can effectively cool the room to the desired temperature. Clarification on these calculations and concepts is requested, indicating a need for guidance in understanding heat pump operations.
Vishak95
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This question has got me quite confused, some guidance would be really appreciated.

A room is to be kept at 23C using a heat pump from ambient. Heat gain to the room is 1.5kW per degree Celsius difference between the atmosphere and the room.

1) If the outside temperature is 32C, what is the reversible COP of the heat pump?

I assume this is referring the maximum COP..

2) What is the minimum work to drive the heat pump?

I have used COP = Ql/Win to calculate this work input.

3) What is the maximum ambient summer temperature to be able to use the heat pump to cool the room to 23C? I'm really confused about this part.

Thanks!

Edit: I think I should have put this thread in the homework help section.
 
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Vishak95 said:
Edit: I think I should have put this thread in the homework help section.

Yes. And it won't hurt to use the template.
 

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