Refrigeration and Air Conditioning The heat rejection factor (HRF) is given by 1 - C.O.P. 1 - (1/C.O.P) 1 + (1/C.O.P) 1 + C.O.P 1 - C.O.P. 1 - (1/C.O.P) 1 + (1/C.O.P) 1 + C.O.P 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 1.86 kW 7.44 kW 3.72 kW 18.6 kW 1.86 kW 7.44 kW 3.72 kW 18.6 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The air cooling system mostly used in transport type aircrafts is Simple evaporative air cooling system Simple air cooling system Bootstrap air cooling system All of the listed here Simple evaporative air cooling system Simple air cooling system Bootstrap air cooling system All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with plants and cause greenhouse effect These react with ozone layer These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with ozone layer These react with oxygen and cause its depletion These react with water vapour and cause acid rain ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The optimum effective temperature for human comfort is Lower in winter than in summer Higher in winter than in summer Not dependent on season Same in winter and summer Lower in winter than in summer Higher in winter than in summer Not dependent on season Same in winter and summer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In chemical dehumidification process, Dew point temperature decreases All of these Dry bulb temperature increases Wet bulb temperature decreases Dew point temperature decreases All of these Dry bulb temperature increases Wet bulb temperature decreases ANSWER DOWNLOAD EXAMIANS APP
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