Refrigeration and Air Conditioning In case of sensible cooling of air, the coil efficiency is given by P.F. - 1 1 + B.P.F. 1/ B.P.F. 1 - B.P.F. P.F. - 1 1 + B.P.F. 1/ B.P.F. 1 - B.P.F. 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.)R + 1 ( O.P.)P = ( O.P)R - 1 ( ( O.P)R O.P)P = ( O.P.)P = ( O.P.)R + 2 ( O.P)P = ( O.P.)R + 1 ( O.P.)P = ( O.P)R - 1 ( ( O.P)R O.P)P = ( O.P.)P = ( O.P.)R + 2 ( O.P)P = ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be Same More/less depending on rating Less More Same More/less depending on rating Less More ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The wet bulb temperature during sensible cooling of air Decreases None of these Increases Remains constant Decreases None of these Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature Which is lower than the dew point temperature of the incoming stream Which lies between the wet bulb and dew point temperatures of the incoming stream Of adiabatic saturation of incoming stream Which lies between the dry bulb and wet bulb temperatures of the incoming stream Which is lower than the dew point temperature of the incoming stream Which lies between the wet bulb and dew point temperatures of the incoming stream Of adiabatic saturation of incoming stream Which lies between the dry bulb and wet bulb temperatures of the incoming stream ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The humidity ratio or specific humidity is the mass of water vapour present in 1 m3 of dry air 1 kg of wet air 1 kg of dry air 1 m3 of wet air 1 m3 of dry air 1 kg of wet air 1 kg of dry air 1 m3 of wet air ANSWER DOWNLOAD EXAMIANS APP
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