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A small gas turbine has a pressure ratio of 9.5, and compressor efficiency of 88%. Overall...

A small gas turbine has a pressure ratio of 9.5, and compressor efficiency of 88%. Overall thermal efficiency is 37%. Ambient conditions are 27oC, 1 bar. Air leaving the compressor passes through a regenerator where it is heated by the exhaust gases leaving the turbine. If the maximum temperature in the cycle is 1300oC and the exhaust gases leave the turbine at 700oC, calculate the effectiveness of the regenerator, giving your answer to the nearest integer percentage. Use standard aircycle assumptions. (Cp = 1.005; ? = 1.4)

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