Thermodynamic analysis of gas – steam combined cycle with carbon dioxide (CO2) emissions saving.

In this paper, cogeneration or combined heat and power (CHP) cycle has been analyzed in order to improve the efficiency of the gas - steam combined cycle and utilization of waste heat. The efficiency of the combined cycle is improved by decreasing the compressor inlet temperature (CIT) and increasing the turbine inlet temperature (TIT). It is observed that the cycle offers the advantage of making efficient use of the energy available in the fuel and in turn, eliminate some portion of pollution associated with the power generation. The study also reveals that if this cycle is being employed for cogeneration, there is a significant saving (11.60%) in the amount of Carbon dioxide (CO2) emitted by the coal-fired thermal power plants. [ABSTRACT FROM AUTHOR]