Q161
Open questionMoisture should be removed from refrigerants to avoid
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Mechanical Engineering · all questionsRefrigeration And Air Conditioning
Refrigeration And Air Conditioning
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Q162
Open questionAir refrigerator works on
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Q163
Open questionThe bypass factor of a cooling coil decreases with
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Q164
Open questionThe formation of frost on cooling coils in a refrigerator
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Q165
Open questionThe boiling point of ammonia is
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Q166
Open questionMoisture in Freon refrigeration system causes
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Q167
Open questionA refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)
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Q168
Open questionThe relative humidity is defined as
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Q169
Open questionThe wet bulb temperature during sensible cooling of air
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Q170
Open questionThe dry bulb temperature during sensible heating of air
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Q171
Open questionThe wet bulb temperature during sensible heating of air
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Q172
Open questionThe C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T1 = Lowest absolute temperature and T2 = Highest absolute temperature)
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Q173
Open questionThe relative coefficient of performance is equal to
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Q174
Open questionIf a gas is to be liquefied, its temperature must be
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Q175
Open questionThe advantage of dry compression is that
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Q176
Open questionThe leaks in a refrigeration system using Freon are detected by
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Q177
Open questionThe higher temperature in vapour compression cycle occurs at
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Q178
Open questionHighest temperature encountered in refrigeration cycle should be
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Q179
Open questionIn actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40°C and an evaporator temperature of 5°C, the heat rejection factor is about
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Q180
Open questionThe capillary tube is not used in large capacity refrigeration systems because
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