Consider a simple gas turbine power plant. air enters the compressor at 30°c and 100 kpa (state 1) with a mass flow rate of 12.6 kg/s and exits at 260°c and 700 kpa (state 2). a fuel with a heating value of 42,000 kj/kg is burned in the combustion chamber with an air-fuel ratio of 60 and a combustion efficiency of 97%. product gases (modeled as air) enter the turbine (state 3) and expand to 100 kpa (state 4). isentropic efficiency of the turbine is 85%. assume constant specific heats at 500°c for air.
(a) calculate the isentropic efficiency of the compressor, in %.
(b) determine the net power output, in kw.
(c) find thermal efficiency of the cycle, in %.
(d) what is the exergetic efficiency of the cycle, in %?