Refrigeration and Air Conditioning The Freon group of refrigerants are Inorganic refrigerants Hydrocarbon refrigerants Halocarbon refrigerants Zoetrope refrigerants Inorganic refrigerants Hydrocarbon refrigerants Halocarbon refrigerants Zoetrope refrigerants ANSWER DOWNLOAD EXAMIANS APP
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 5 6 0.2 1.2 5 6 0.2 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression refrigeration system, refrigerant occurs as liquid between Compressor and condenser Expansion valve and evaporator Compressor and evaporator Condenser and expansion valve Compressor and condenser Expansion valve and evaporator Compressor and evaporator Condenser and expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by O.P)P = ( O.P.)P = ( O.P)P = ( O.P.)R + 1 ( O.P)R O.P)R - 1 ( O.P.)R + 2 ( O.P.)P = ( ( O.P)P = ( O.P.)P = ( O.P)P = ( O.P.)R + 1 ( O.P)R O.P)R - 1 ( O.P.)R + 2 ( O.P.)P = ( ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of Low weight per tonne of refrigeration Higher coefficient of performance Low temperature at high altitudes High heat transfer rate Low weight per tonne of refrigeration Higher coefficient of performance Low temperature at high altitudes High heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process Takes place at constant temperature Takes place at constant pressure Takes place at constant entropy Involves no change in volume Takes place at constant temperature Takes place at constant pressure Takes place at constant entropy Involves no change in volume ANSWER DOWNLOAD EXAMIANS APP
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