Research on the Performance of Solar Aided Power Generation System Based on Annular Fresnel Solar Concentrator

Heng Zhang, Na Wang, Kai Liang, Yang Liu and Haiping Chen
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Heng Zhang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Na Wang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Kai Liang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Yang Liu: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Haiping Chen: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2021, vol. 14, issue 6, 1-23

Abstract: A solar-aided power generation (SAPG) system effectively promotes the high efficiency and low cost utilization of solar energy. In this paper, the SAPG system is represented by conventional coal-fired units and an annular Fresnel solar concentrator (AFSC) system. The annular Fresnel solar concentrator system is adopted to generate solar steam to replace the extraction steam of the turbine. According to the steam–water matrix equation and improved Flugel formula, the variable conditions simulation and analysis of the thermo-economic index were proposed by Matlab. Furthermore, in order to obtain the range of small disturbance, the method of partial replacement is used, that is, the extraction steam of the turbine is replaced from 0 to 100% with a step size of 20%. In this work, a SAPG system is proposed and its thermo-economic index and small disturbance scope are analyzed. The results show that the SAPG system is energy-saving, and the application scope of small disturbance is related to the quantity of the extraction steam and evaluation index.

Keywords: solar aided power generation (SAPG); annular Fresnel solar concentrator; state matrix; thermal efficiency; small disturbance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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