Journal Press India^®

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The study describes the thermodynamic methodology for the performance evaluation of alternative regeneration gas turbine cycle with twin shaft system. The effects of pressure ratio, turbine inlet temperature, inlet air temperature and regenerative effectiveness used in the thermodynamic analysis of alternative regeneration gas turbine cycle with twin shaft system on thermal efficiency, specific work output and specific fuel consumption of the cycle have been investigated. It is observed that thermal efficiency of gas turbine alternate regeneration system increases with pressure ratio with increase in turbine inlet temperature and specific work output increases with increase in turbine inlet temperature but lower than conventional regeneration system. The thermal efficiency and specific work output of the cycle increases with decrease in inlet air temperature. The specific fuel consumption decreases with increase in both pressure ratio and turbine inlet temperature and with decrease in inlet air temperature. This system is very attractive at high turbine inlet temperature of 1500 0C and above.

Keywords

Gas Turbine System; Alternative Regeneration; Energy Analysis; Effectiveness

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