Consider the Brayton power cycle for a spacecraft shown in the diagram below. The working fluid is Argon. Stream S1 enters the compressor at 1P kPa = 35 After the compression it is heated to 3 850o T C = is and then expanded into a gas turbine. The exhaust of the gas turbine is cooled to 1 10o T C = before it enters the compressor. There is no significant pressure drop in the heater and the cooler. Assume that the compressor and turbine efficiencies are = 80%

1. Calculate the compressor discharge pressure (kPa) to obtain maximum net power

2. Calculate the maximum net power (kW/kg of Argon) obtained with this cycle

3. Calculate the efficiency (%) of the cycle

4. Calculate the maximum efficiency(%) of the cycle

Host Cnuma T = RE dan C Host Cnuma T = RE dan C