A novel thermodynamic method and insight of heat transfer characteristics on economizer for supercritical thermal power plant

Yanhong Wang, Lihua Cao, Xingcan Li, Jiaxing Wang, Pengfei Hu, Bo Li and Yong Li

Energy, 2020, vol. 191, issue C

Abstract: The technology of installing economizer has been proven to be an efficient way of recovering waste heat from flue gas of coal-fired power plants. In this study, a novel theoretical model of economizer involving heat transfer characteristics and regarding the variation of physical properties for working fluid is proposed to evaluate and analyze the thermodynamic performance of economizer for supercritical unit. With such a tool, a theoretical investigation on heat transfer characteristics and exergy analysis of process with regard to economizer installed in a 660 MW supercritical unit is performed. The performance parameters on heat transfer are graphically presented. Moreover, the heat transfer performance of economizer from novel theory is compared with that obtained by traditional method, and the drawbacks of traditional model are thoroughly revealed.

Keywords: Supercritical unit; Economizer; Heat transfer characteristics; Thermodynamic model; Exergy analysis (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:191:y:2020:i:c:s0360544219322686

DOI: 10.1016/j.energy.2019.116573

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