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the ideal air standard Brayton cycle consists of the following processes: 1-2 isentropic compression through a...

the ideal air standard Brayton cycle consists of the following processes:

1-2 isentropic compression through a pressur ratio rp =p2/p1

2-3 heat addition at constant pressure untill the pressure is p3

3-4 isentropic expansion to the initial pressure

4-1 heat rejection at constnt pressure

A- show that the cycle efficiency for this cycle is

B-Air enters compressor of a gas turbine at 100kpa and 250c.for a pressure ratio of 5 and a maximum temp of 8500c , determine the thermal efficiency assuming the cycle operates using Brayton cycle with isentropic processes in the compressor and turbine

recalculate the efficiency of the above cycle if the compressor and turbine efficiency is 80percent

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