Exergy analysis of the regenerative gas turbine cycle using absorption inlet cooling and evaporative aftercooling

This paper provides an exergy analysis to investigate the effects of pressure ratio, turbine inlet temperature, compressor inlet temperature and ambient relative humidity on the thermodynamic performance of a regenerative gas turbine cycle using absorption inlet cooling and evaporative aftercooling. Combined first and second law analysis indicates that the exergy destruction in various components of the gas turbine cycle is significantly affected by compressor pressure ratio and turbine inlet temperature, and slightly varies with the compressor inlet temperature and ambient relative humidity. It also indicates that the maximum exergy destroyed in the combustion chamber; which represents over 60% of the total exergy destruction in the overall system. The net work output, first law efficiency, and second law efficiency of the cycle significantly varies with the change in the pressure ratio, turbine inlet temperature, compressor inlet temperature and ambient relative humidity.