A gas turbine power plant that operates on an ideal Brayton cycle. Assume isentropic processes…

A gas turbine power plant that operates on an ideal Brayton cycle. Assume isentropic processes through the compressor and turbine. The pressure ratio for the cycle is8, the air temperature at the inlet to compressor is 20 C and at the inlet to the turbine is 1000 C. Treat the air as an ideal gas with R = 0.287 kJ/kg*K, cp = 1.005kJ/kg*K, k = 1.4.

a)What is the temperature at the exit of the compressor?
b)What is the temperature at the exit of the turbine?
c)What is the thermal efficiency for the cycle?
d) When the pressure ratio is increased to 12 while the compressor and turbine inlet temperatures remain at 20C and 1000 C. What is the net work output?
e)What is the thermal efficiency for the cycle?

 

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