Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4991624 | Applied Thermal Engineering | 2017 | 9 Pages |
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.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Yanjuan Wang, Jinliang Xu, Zhewen Chen, Hui Cao, Bo Zhang,