Thermodynamic Performance Evaluation of an Integration Design between the Combined-cycle and Air Separation Unit in an IGCC Power Plant

IGCC 발전 플랜트에서 복합발전공정-공기분리장치의 연계에 관한 열역학적 성능 평가

In this paper, the integration issue, such as an air-side integration design between the gas turbine and air separation unit, is described and analyzed by the exergy and energy balance of the combined-cycle power block in an IGCC power plant. The results showed that the net power of the system was almost same, but that of the gas turbine was decreased as the integration degree increased. The highest exergy loss was occurred in the combustor of gas turbine, which was affected by the chemical reaction, heat conduction, mass diffusion, and viscous dissipation.