Technical and economical optimization for a typical solar hybrid coal-fired power plant in China

Yanjuan Wang, Jinliang Xu, Zhewen Chen, Hui Cao, Bo Zhang

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Solar hybrid coal-fired power plant can use solar heat with temperature lower than 300 °C to generate power efficiently by replacing the bled-off steam from a steam turbine to heat the feed water. In this paper, a model of the solar field and power block has been developed to investigate the thermodynamic and economic performances of a solar hybrid coal-fired power plant under a variety of operating conditions and structure layouts. The effects of the key operating parameters on the performances of the solar hybrid coal-fired power plant are numerically investigated. A technical and economical optimization of the solar multiple has been presented. Furthermore, the annual solar-to-electric efficiency, annual solar power output and levelized cost of electricity of the solar hybrid coal-fired power plant are also analyzed. It is found that the efficiencies in the region of 13–20% can be achieved, and this for levelized cost of electricity in the region of 0.7–1.1 ¥/kW he, depending on the solar multiple and substituting method.

Original languageEnglish
Pages (from-to)549-557
Number of pages9
JournalApplied Thermal Engineering
Volume115
Early online date31 Dec 2016
DOIs
Publication statusPublished - 25 Mar 2017
Externally publishedYes

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