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Energies 2012, 5(9), 3381-3397; doi:10.3390/en5093381
Article

Exergoeconomic Evaluation of a Modern Ultra-Supercritical Power Plant

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Received: 21 June 2012 / Revised: 3 August 2012 / Accepted: 21 August 2012 / Published: 6 September 2012
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Abstract

In this paper, the exergoeconomic analysis was conducted to an existing ultra-supercritical coal-fired power plant in China to understand the cost-formation process, to evaluate the economic performance of each component and to find possible solutions for more cost-effective designs. The total revenue requirement (TRR) and the specific exergy costing (SPECO) methods were applied for economic analysis and exergy costing, respectively. Quantitative balances of exergy and exergetic costs as well as necessary auxiliary equations for both individual component and the overall system were established. The results show that the exergoeconomic factors of the furnace and heat exchangers at low temperature levels, including air preheater and low-pressure feedwater preheaters, are rather small; while those of other components are relatively large. Moving more heat absorption into furnace to use the effective radiation heat transfer, increasing the air preheating temperature and adding more low pressure feedwater preheaters can be promising solutions for future design.
Keywords: ultra-supercritical power plant; economic analysis; exergoeconomic evaluation; cost-effective design ultra-supercritical power plant; economic analysis; exergoeconomic evaluation; cost-effective design
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Wang, L.; Yang, Y.; Dong, C.; Yang, Z.; Xu, G.; Wu, L. Exergoeconomic Evaluation of a Modern Ultra-Supercritical Power Plant. Energies 2012, 5, 3381-3397.

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