Which of the following cools the air in a household refrigerator?
a. absorption of the...
Physics, 04.11.2019 05:31 petriajack8375
Which of the following cools the air in a household refrigerator?
a. absorption of the heat from the air due to evaporation of the liquid refrigerant
b. reduction of the air temperature due to condensation of the gaseous refrigerant
c. the transfer of heat to the evaporator due to compression of the liquid refrigerant
d. the transfer of heat from the air to the compressor due to expansion of the gaseous refrigerant
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4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
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