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Question

The difference in low temperature cascade condenser temperature and high temperature cascade evaporator temperature is called ______

The correct answer is

temperature overlap 

The cascade heat exchanger transfers heat from the low-temperature stage’s condenser to the high-temperature stage’s evaporator. The former must be warmer for this heat transfer to occur. Their saturation-temperature difference is called temperature overlap.

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Important Questions from Vapour Compression (V-C) Cycle

  1. 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]

  2. In vapour compression refrigeration system, the effect of liquid refrigerant under cooling is to

  3. If vapour is NOT superheated after compression, it is called ________.

  4. The amount of heat removed in the evaporator per unit mass flow of refrigerant is called:

  5. In a vapor compression system, the highest temperature of the refrigerant during the cycle occurs after

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