Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.04b
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- Pages.871-878
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- 2000
Thermoeconomic Analysis of Power Plants with Integrated Exergy Stream
통합적 엑서지에 의한 발전 플랜트의 열경제학적 해석
Abstract
Exergetic and thermoeconomic analysis were performed for a 500-MW combined cycle plant and a 137-MW steam power plant without decomposition of exergy stream of matter into thermal and mechanical exergies. The calculated costs of electricity are almost same within 0.5% as those obtained by the thermoeconomic method with decomposition of exergy into thermal and mechanical exergies of the combined cycle plant. However for the gas-turbine cogeneration plant having different kinds of products. the difference in the unit costs of products, obtained from the two methodologies is about 2%. Such outcome indicates that the level at which the cost balances are formulated does not affect the result of thermoeconomic analysis, that is somewhat contradictory to that concluded previously.