In an ideal vapor-compression refrigeration cycle, the specific enthalpy of refrigerant (in kJ/kg) at the following states is given as: Inlet of condenser: 283 Exit of condenser: 116 Exit of evaporator: 232 The COP of this cycle is
2.27
Throttling preserves enthalpy, so evaporator-inlet enthalpy is 116 kJ/kg. Refrigeration effect is 232−116=116 and compressor work 283−232=51 kJ/kg. COP=116/51=2.27.
Important Questions from Vapour Compression (V-C) Cycle
A refrigeration plant works on an ideal vapour-compression refrigeration cycle with refrigerant as R-12 and develops a refrigeration capacity of 10 TR. If the refrigeration effect produced is 100 kJ/kg, what will be the mass flow rate of the refrigerant? [Assuming, 1 TR = 3.5 kW]
In vapour compression refrigeration system, the effect of liquid refrigerant under cooling is to
If vapour is NOT superheated after compression, it is called ________.
The amount of heat removed in the evaporator per unit mass flow of refrigerant is called:
In a vapor compression system, the highest temperature of the refrigerant during the cycle occurs after
