Investigation the effect of important design parameters from the perspective of Exergy in the generation of electricity and heat cycle (CHP)

In this paper, the effect of the compressor pressure ratio, the input temperature to the gas turbine and the recovery pressure of the steam boiler is investigated by examining the simultaneous generation of electricity and heat from the perspective of economical exergy and exergy. The results show that the energy efficiency and exergy of the CHP cycle are greater than the gas turbine cycle and are the most common exergy loss in the combustion chamber. Exergy efficiency increases and then decreases by increasing the compressor pressure to an optimal amount. As the input temperature increases to the turbine gas, the exergy efficiency increases, the loss of exergy, and the rate of cost of the exergy casualties decreases. By increasing the temperature of the saturated vapor in the CHP cycle, the energy efficiency decreases but the exergy efficiency increases.