Inderscience Publishers

The effect of elevated inlet air temperature and relative humidity on Gas Turbine cogeneration system: exergy assessment

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This research aims to quantify the exergy destructions of Gas Turbine (GT) cogeneration system under different inlet air temperatures and humidity. Three different cogeneration schemes were examined in this research: conventional GT, GT-Single Pressure HRSG and GT-Dual Pressure HRSG. A parametric study was carried out in terms of exergy destruction and second-law efficiency. The exergy utilisation factor had been investigated in this research. Results showed that inlet air temperature and relative humidity play an important role in determining exergetic performance. Integrating GT with dual pressure HRSG can be considered as an option during summer season and would improve the production of electricity and desalted water.

Keywords: gas turbines, HRSG, heat recovery steam generators, cogeneration, exergy utilisation factor, exergy destruction, elevated inlet air temperature, relative humidity, electricity generation, desalination

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