# (6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor...

###### Question:

(6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor pressure ratio of 3. At the beginning of the compression, the temperature Ti = 270 K and pressure P1 = 140 kPa. The turbine inlet temperature is T3 = 320 K. You may assume both heat exchangers operate without pressure losses. Draw a T-s diagram for this ideal cycle. If the volumetric flow rate at State 3 is 0.4 m3/s, what is the mass flow rate of air? Determine the net power input, refrigeration capacity, and coefficient of performance.

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