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A gas-turbine power plant operates on the simple Brayton cycle with pressure ration of 16 . The working fluid (air) enters the compressor at 40C
A gas-turbine power plant operates on the simple Brayton cycle with pressure ration of 16 . The working fluid (air) enters the compressor at 40C and 1atm with a rate of 850m3/min and leaves the turbine at 650C. Assuming a compressor isentropic efficiency of 85% and a turbine isentropic efficiency of 88%. Note the following: ideal gas equation of state: Pv=RT,PV=mRT,T2P2V2=T1P1V1 ideal gas undergoing an isentropic process: T1T2=(P1P2)kk1=(V2V1)k1 constant specific heats and gas constant with: Cp=1.108kgKkJ,Cv=0.821kgKkJ,k=1.35,R=0.287kgKkJ Draw or calculate: (a) a "T-5" or "P-V" diagram that represents this Brayton cycle. (b) the outlet pressure (kPa) of the compressor. (c) the outlet temperature (K) of the compressor. (d) the inlet temperature (K) of the turbine. (e) the mass flow rate (kg/s) of the cycle (hint: use the equation of state). (f) the power (kW) of the compressor. (g) the power (kW) of the turbine. (h) the thermal efficiency (\%) of the cycle
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