11-117 Consider an ideal gas refrigeration cycle using helium as the working fluid. Helium enters the compressor at 100 kPa and -10°C and compressed to 250 kPa. Helium is then cooled to 20°C before it enters the turbine. For a mass flow rate of 0.2 kg/s, the net power input required is a) 9.3 kW b) 27.6 kW c) 48.8 kW d) 93.5 kW e) 119 kW | |
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