Thermodynamics: Non-ideal vapor-compression cycle, absorption refrigeration cycle (38 of 51)

[@emt4921]

Prof David Miller and Prof John Biddle are truly gifted!!!

[@rtrt2889]

Great lecture!

[@joshuapancuelo1942]

7:00 @process 8 to 1: Why does losing pressure cause the saturated fluid to increase temperature? (When state 1 was defined in the diagram, it was placed slightly above state 8)

[@13-ahmedmohamedhassan73]

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 MPa and -10°C at a rate of 0.12 kg/s, and it leaves at 0.7 MPa and 50°C. The refrigerant is cooled in the condenser to 24°C and 0.65 MPa, and it is throttled to 0.15 MPa. show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the COP of the refrigerator when i solved the example i said that Q rejected=m(hv@0.15mpa-hafter throttling) and i didn't say (h entering compressor-h after throttling) as we know that it exits from evaporator saturated and enters compressor superheated due to heat transfer in connecting line and pressure drop

[@13-ahmedmohamedhassan73]

@CPPMechEngTutorials