7-98 Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass flow rate of nitrogen through the compressor, assuming the compression process to be a) isentropic, b) polytropic with n = 1.3, c) isothermal, and d) ideal two-stage polytropic with n = 1.3. | |
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