Air enters the compressor of a simple Brayton cycle at 300 K and 100 kPa and is

Question

Air enters the compressor of a simple Brayton cycle at 300 K and 100 kPa and is
compressed to 1.1 MPa by a compressor with an isentropic efficiency of 88%. The mass
flow rate of air through the cycle is 100 kg/s. 75 MW of heat is added to the air stream at the combustor. The air is then expanded to 100 kPa by a turbine before before rejected to the ambient. The turbine’s isentropic efficiency is 92%. Analyze the cycle using the air standard analysis. Calculate the thermal efficiency of the cycle.

Explanation / Answer

43.74% efficiency

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