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Answer :
COP of the air conditioning unit is 7.596, and the rate at which heat is rejected to the ambient from the air conditioner condenser is 21.49 kW.
To determine the Coefficient of Performance (COP) of the 18,000 Btu/h split air conditioner and the rate at which heat is rejected to the ambient from the air conditioner condenser, follow these steps:
1. Convert the air conditioner capacity from Btu/h to kW:
18,000 Btu/h * (1,055 kJ / 1 Btu) * (1 kW / 1,000 kJ) = 18,990 W = 18.99 kW
2. Calculate the COP:
COP = Cooling Capacity (kW) / Power Input (kW)
COP = 18.99 kW / 2.5 kW = 7.596
3. Calculate the heat rejected to the ambient:
Heat Rejected = Cooling Capacity + Power Input
Heat Rejected = 18.99 kW + 2.5 kW = 21.49 kW
So, the COP of the air conditioning unit is 7.596, and the rate at which heat is rejected to the ambient from the air conditioner condenser is 21.49 kW.
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