A Brayton cycle with a reheater has a mass flow rate of 30 kg/s. Air enters the first compressor at 100 kPa and 300 K and is compressed to a pressure of 1200 kPa. The air enters the turbine at 1100 K...

A Brayton cycle with a reheater has a mass flow rate of 30 kg/s. Air enters the first compressor at 100 kPa and 300 K and is compressed to a pressure of 1200 kPa. The air enters the turbine at 1100 K and expands through the turbine to an intermediate reheat pressure. The air returns to the turbine at 1100 K and continues to expand through the turbine to a pressure of 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 added by the reheater, and the thermal efficiency of the cycle for reheater pressures ranging between 200 kPa and 1000 kPa.