A brayton cold asc has a turbine that is 800 isentropically, Ask an Expert

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A Brayton cold ASC has a turbine that is 80.0% isentropically efficient and a compressor with an isentropic pressure ratio of 7.00. The compressor inlet temperature is 530. R and the turbine inlet temperature is 2460 R.

Determine the compressor isentropic efficiency that causes the entire cycle thermal efficiency to become exactly zero. Assume k = 1.40.

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