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An air refrigeration plant of 70.26 kW, capacity comprises a centrifugal compressor, a cooler hea...

An air refrigeration plant of 70.26 kW, capacity comprises a centrifugal compressor, a cooler heat exchanger and an air turbine. The compressor is coupled directly to the air turbine. The compressor also receives power from another prime mover. The processes in the compressor and the turbine are adiabatic but not isentropic. Air at temperature 294 K and 85 kPa enters the compressor. It leaves the compressor at 363 K. the same air enters the turbine at 311 K and 150 kPa. The turbine exit is at 273 K. assuming no pressure loss in the cooler and refrigerator (evaporator) section, and constant specific heats with k=1.4 for air determine: a. The compressor efficiency. b. The turbine efficiency. c. The mass flow rate of air. d. The horse power input to the plant. e. And the C.O.P.

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per Glueのノ Lf e) cop. TCU 150 4 = 264.05K. Comprenor e: 40.869 % Int:81.63%, 2 @nan otar, Ofugeralen.eeニ7026 Cp(m-1;) s) m x

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