Steady-state operating data are provided for a compressor and heat exchanger in. The power input to the compressor is 50 kW. As shown in the figure, nitrogen (N2) flows through the compressor and heat exchanger with a mass flow rate of 0.25 kg/s. The nitrogen is modeled as an ideal gas. A separate cooling stream of helium, modeled as an ideal gas with k = 1.67, also flows through the heat exchanger. Stray heat transfer and kinetic and potential energy effects are negligible. Determine the mass flow rate of the helium, in kg/s.

 

 

Transcribed Image Text:

Is-175C 5 Helium 4-74-25C Compressor Power in = 50 kW + Co P1-100 kPa T-280 K m = 0.25 kg/s 2+ wwww T-350 K Heat exchanger Is-175C 5 Helium 4-74-25C Compressor Power in = 50 kW + Co P1-100 kPa T-280 K m = 0.25 kg/s 2+ wwww T-350 K Heat exchanger