A regenerative gas-turbine power plant with two stages of compression and two stages of expansion operates on a Brayton cycle with a pressure ratio across the two-stage compressor of 12. Air enters the first stage of the compressor at 100 kPa and 300 K. At the intercooler exit, the temperature is 300 K. In both turbine stages, air enters at 1400 K. The total heat transfer rate to the air in both combustors is 5,000 kW. The regenerator has an efficiency of 70%, both compressor stages have an isentropic efficiency of 75%, and both turbine stages have an isentropic efficiency of 80%. The pressure in the intercooler and reheater is 600 kPa. Using an Air Standard Analysis, find the following
(a) Thermal Efficiency in Percentage
(b) net work output
(c) mass flow rate
(d) Intercooler/Reheater pressure that maximizes the cycle’s thermal efficiency
(e) Max Work output
In: Mechanical Engineering
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