Engineering, 28.11.2019 03:31 dondre54
The evaporator of a refrigeration cycle is basically a heat exchanger in which a refrigerant is evaporated by absorbing heat from a fluid. refrigerant-22 enters an evaporator at 200 kpa with a quality of 22 percent and a flow rate of 2.65 l/h. r-22 leaves the evaporator at the same pressure superheated by 5 o c. the refrigerant is evaporated by absorbing heat from air whose flow rate is 0.75 kg/s. make a sketch of this heat exchanger labeling the inlets and exits for both the refrigerant and the air. then determine (a) the rate of heat absorbed from the air [kw] and (b) the temperature change of air [ o c]. the properties of r-22 at the inlet and exit of the condenser are h1 = 220.2 kj/kg, v1 = 0.0253 m3 /kg, and h2 = 398.0 kj/kg
Answers: 2
Engineering, 04.07.2019 18:10, skpdancer1605
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Engineering, 04.07.2019 18:20, moneywaydaedae
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
The evaporator of a refrigeration cycle is basically a heat exchanger in which a refrigerant is evap...
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