STUDY OF GAS TURBINE COGENERATION CYCLE WITH INLET EVAPORATIVE COOLING AND REHEATING

Abstract

Energy has been a major concern over the years all over the world. Cogeneration is being coined as the efficient utilization of energy in various power plants. Gas turbine being the compact and one of the most reliable means for the generation of power is pretty good to be used for cogeneration. Cogeneration in general is a term used for producing heat and work simultaneously. The exhaust heat from the turbine is used as the process steam for either district heating, cooling at various applications. Cogeneration with gas turbines is the frequently and widely used cogeneration system because this type of system takes the advantage of the relative merit of engine and enhances thermal efficiency at full load conditions as well as part load conditions. Also, it is highly accepted in power industries. The work performed provides a review of research investigation on cogeneration systems which are carried out during the last few years. Along with the literature review, the performance of various output parameters of gas turbine cogeneration system with reheat and inlet evaporative cooling (proposed cycle) are analyzed parametrically taking compressor pressure ratio, turbine inlet temperature, pinch point temperature and inlet temperature of air as the main variables. The effect of these parameters on power/specific work, efficiency, power to heat ratio, First law efficiency and second law efficiency were plotted with the help of EES software.