Engineering, 21.12.2019 06:31 Anonymouslizard
Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.4 mpa and 160 kpa with refrigerant-134a as the working fluid. heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where the pressure in the upper and lower cycles are 0.4 and 0.5 mpa, respectively. in both cycles, the refrigerant is a saturated liquid at the condenser exit and a saturated vapor at the compressor inlet, and the isentropic efficiency of the compressor is 80 percent. if the mass flow rate of the refrigerant through the lower cycle is 0.25 kg/s, determine (a) the mass flow rate of the refrigerant through the upper cycle (b) the rate of heat removal from the refrigerated space.(c) the cop of this refrigerator.
Answers: 1
Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 19:20
The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal
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Engineering, 04.07.2019 19:20
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Engineering, 06.07.2019 03:10
Two slings are used to lift a girder of length l and uniform weight per unit length. what is the best position for the slings if the bending moment due to the weight of the girder is to be kept to a minimum?
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Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.4 mpa a...
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