Journal Press India^®

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This paper presents thermodynamic performance evaluation of gas turbine co-generation with alternative regeneration system in comparison to simple and conventional regenerative cogeneration systems. The energetic and exergetic efficiencies have been defined. The effects of pinch point temperature (PPT) and process steam pressure used in have been investigated. For higher TITs the second law efficiency and power to heat ratio is relatively higher for alternative regeneration with cogeneration system. It is observed from the results obtained that power to heat ratio increases with increase in pinch point but first and second law efficiency decreases with an increase in pinch point. Power to heat ratio increases significantly with increase in process steam pressure but first law efficiency decreases with the same. The second law efficiency increases with increase in process steam pressure up to 1 MPa and afterwards decreases with increase in process steam pressure. Results also show that inclusion of cogeneration with alternate regeneration provides significant improvement in process heat production and second law efficiency.

Keywords

Exergitic Analysis; Gas Turbine System; Co-Generation; Power to Heat Ratio; Alternative Regeneration.

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