Refrigeration and Air Conditioning A good refrigerant should have Low C.O.P. and low freezing point High operating pressures and low freezing point High latent heat of vaporisation and low freezing point High specific volume and high latent heat of vaporisation Low C.O.P. and low freezing point High operating pressures and low freezing point High latent heat of vaporisation and low freezing point High specific volume and high latent heat of vaporisation 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 0.2 6 1.2 5 0.2 6 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is More or less depending on ambient conditions Same Less More More or less depending on ambient conditions Same Less More ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During adiabatic saturation process on unsaturated air ___ remains constant. Wet bulb temperature Dew point temperature Dry bulb temperature Relative humidity Wet bulb temperature Dew point temperature Dry bulb temperature Relative humidity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Most of the domestic refrigerators work on the following refrigeration system Electrolux refrigerator Vapour absorption Vapour compression Carnot cycle Electrolux refrigerator Vapour absorption Vapour compression Carnot cycle ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The unit of thermal diffusivity is m/h m²/h m/hK m²/hK m/h m²/h m/hK m²/hK ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS