Question

Consider an ideal Brayton cycle that takes in air at 5°C and 80 kPa. The combustion...

Consider an ideal Brayton cycle that takes in air at 5°C and 80 kPa. The combustion adds 900 kJ/kg of energy to the air. Due to material properties of the engine, the maximum temperature in the cycle is 1200°C. Using cold-air-standard assumptions, determine

a) The maximum permissible pressure ratio (i.e. the pressure ratio that corresponds to the maximum temperature being 1200°C).

b) The maximum power output of the engine (i.e. the power output at the pressure ratio found in question 3) if the flow rate of air is 12 kg/s.

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