Refrigeration and Air Conditioning If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be 1.2 6 0.2 5 1.2 6 0.2 5 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is 3.72 kW 1.86 kW 7.44 kW 18.6 kW 3.72 kW 1.86 kW 7.44 kW 18.6 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During sensible cooling, Specific humidity increases Wet bulb temperature increases Partial pressure of vapour remains constant Relative humidity remains constant Specific humidity increases Wet bulb temperature increases Partial pressure of vapour remains constant Relative humidity remains constant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In mechanical refrigeration system, the refrigerant has the maximum temperature Before expansion valve Between compressor and condenser Between condenser and evaporator In evaporator Before expansion valve Between compressor and condenser Between condenser and evaporator In evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Accumulators should have adequate volume to store refrigerant charge at least 0.5 0.75 0.1 0.25 0.5 0.75 0.1 0.25 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of 9: 1 1: 1 1: 9 1: 3 9: 1 1: 1 1: 9 1: 3 ANSWER DOWNLOAD EXAMIANS APP
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