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Unformatted text preview: Determine; a) The rate of heat removed from the refrigerated space and the power input to the compressor, b) The rate of heat rejection to the environment, c) The coefficient of performance. Question 3. A heat pump is used to heat a house and maintain it at 24°C. On a winter day when the outdoor temperature is -5°C, the house is estimated to lose heat at a rate of 80,000 kJ/h. Determine the power required to operate this heat pump if it is Carnot cycle heat pump? If instead of Carnot cycle, a vapor-compression cycle was used for the heat pump with HFC-134a, what will be the coefficient of performance? Assume that the only pressure changes occur across the compressor and expansion valve and they are adiabatic such that the only heat transfer to or from the refrigerant occurs in evaporator and condenser....
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- Spring '12
- Chemical Engineering