Refrigeration and Air Conditioning In case of sensible cooling of air, the coil efficiency is given by 1/ B.P.F. 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. ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor) 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 advantage of dry compression is that It results in high volumetric and mechanical efficiency It permits complete evaporation in the evaporator It permits higher speeds to be used All of these It results in high volumetric and mechanical efficiency It permits complete evaporation in the evaporator It permits higher speeds to be used All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Formation of frost on evaporator in refrigerator Is immaterial Can be avoided by proper design Increases heat transfer rate Results in loss of heat due to poor heat transfer Is immaterial Can be avoided by proper design Increases heat transfer rate Results in loss of heat due to poor heat transfer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is 0.4 0.6 0.67 0.376 0.4 0.6 0.67 0.376 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be Any value High, of the order of 25° Zero As low as possible (3 to 11°C) Any value High, of the order of 25° Zero As low as possible (3 to 11°C) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS