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In: Mechanical Engineering

A gas turbine operates as a cold-air standard Brayton cycle. Air enetrs the compressor at 300K...

A gas turbine operates as a cold-air standard Brayton cycle. Air enetrs the compressor at 300K and 100kPa and is compressed to 700kPa. During the heat addition process in the combustor, the temperature of the air increases to 1000K. The turbine and compressor can be assumed to be operating isentropically. Evaluate specific heat at 300K.

a. thermal efficiency of the cycle?

b. net work of the cycle (kj/kg)?

c. Back work ratio?

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