A Brayton cycle with an intercooler has a mass flow rate of 30 kg/s. Air enters the first compressor at 100 kPa and 300 K; is compressed to an intermediate pressure and sent through an intercooler, which cools the air to 305 K; and then returns to the compressor to be further compressed to a pressure of 1000 kPa. The air enters the turbine at 1100 K and expands through the turbine to 100 kPa. The isentropic efficiency of both the compressor and the turbine is 0.78. Consider the specific heat of the air to be variable. Plot the net power produced by the cycle, the amount of heat removed by the intercooler, and the thermal efficiency of the cycle for intercooler pressures ranging between 200 kPa and 800 kPa.
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