Exergetic performance analyses of three different cogeneration plants

Abstract Energy cost and consumption are increasing, so that efficiency becomes more important, from the production to end users. reserves limited; increasing demand environmental concerns make important. To provide cost-effective clean power generation, gas turbines cogeneration becoming key technology must be researched developed. Three different cycles analyzed by using first second laws of thermodynamics exergy analysis method. The three basic, air heated, fuel heated cycles. performance devices such as turbine, recuperator, combustion chamber, compressor, heat exchanger for whole cycle is obtained discussed. For excess rates, compression ratios ( r ), ambient (inlet air) temperatures, Z factor (ratio lost useful exergy), specific consumption, work other parameters were It found rates have most effect on