Minimum power that must be provided to the air-conditioner

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To maintain a comfortable indoor temperature, an air conditioner must remove heat from the home, which in this case is 25 kJ/h. The minimum power required for the air conditioner depends on its coefficient of performance (COP), which measures its efficiency. The discussion highlights the need to calculate the COP to determine the actual power input required. Without knowing the specific COP, the minimum power cannot be definitively stated. Thus, the minimum power provided must account for the efficiency of the air conditioning system.
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On a hot day, a Florida home is kept cool by an air conditioner. The outside temperature is 42.8C and the interior of the home is 21C.

If 25 kJ/h of heat is removed from the house , what is the minimum power that must be provided to the air-conditioner? Answer in units of kJ/h.


I'm preety stumped would the answer just be 25 kJ/h to compensate for the heat removed ?

Please help.
Thank you
 
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jdog6 said:
On a hot day, a Florida home is kept cool by an air conditioner. The outside temperature is 42.8C and the interior of the home is 21C.
If 25 kJ/h of heat is removed from the house , what is the minimum power that must be provided to the air-conditioner? Answer in units of kJ/h.
I'm preety stumped would the answer just be 25 kJ/h to compensate for the heat removed ?
Please help.
Thank you
You need to find the COP = Q_c/W to find W. The minimum power would be with the most efficient air conditioner. What is the COP of such a cycle?

AM
 
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