It is proposed to use a Brayton cycle with an intercooler added to the compressor. Air enters the compressor at 100 kPa and 25°C and eventually leaves the compressor at a pressure of 1500 kPa. The mass flow rate of the air is 50 kg/s. Consider the specific heats of the air to be constant. The isentropic efficiency of the compressor is 0.80. Determine the power required by the compressor if (a) the compression occurs in one step, and (b) the air is compressed to 400 kPa, directed toward an intercooler where it is cooled to 25°C, and then returned to the compressor where it completes the compression to 1500 kPa.
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