Predicting performance of a gas turbine cogeneration system with inlet air cooling

In this paper a cogeneration system producing electricity, steam and chilled water (from absorption chillers) is evaluated. Part of the thermal load of the chillers is employed for cooling the intake air of the gas turbine cycle, to recover power in hot climate. A methodology based on a hourly profile analysis was developed to simulate the operation of the cogeneration system from the four main equipment involved (gas turbine, heat recovery steam generator, double effect absorption chiller and forced circulation air cooling coil) with variations of climate properties and energy demands (electricity, steam and chilled water). An economic analysis is also presented.