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Volume 16
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Article

Numerical Investigation of a Solar-Heating System with Solar-Tower Receiver and Seasonal Storage in Northern China: Dynamic Performance Assessment and Operation Strategy Analysis

by
Xiaoxia Li
1,2,3,4,5,*,
Husheng Qiu
1,3,4,
Zhifeng Wang
1,6,*,
Jinping Li
1,3,4,
Guobin Yuan
1,3,4,
Xiao Guo
1,3,4 and
Lifeng Jin
1,3,4
1
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2
Key Laboratory of Solar Power System Engineering, Jiuquan Vocational and Technical College, Jiuquan 735000, China
3
Western China Energy and Environment Research Center, Lanzhou University of Technology, Lanzhou 730050, China
4
China Northwest Collaborative Innovation Center of Low-Carbon Unbanization Techonlogies, Lanzhou 730050, China
5
Urumqi Sikorsk Energy Contract Management Professional Technical Service Co., Ltd., Urumqi 830011, China
6
Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Beijing 100190, China
*
Authors to whom correspondence should be addressed.
Energies 2023, 16(14), 5505; https://doi.org/10.3390/en16145505
Submission received: 17 June 2023 / Revised: 12 July 2023 / Accepted: 18 July 2023 / Published: 20 July 2023
(This article belongs to the Special Issue Advanced Applications of Solar and Thermal Storage Energy)
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Abstract

Solar-heating technology is a promising solution to help China achieve the “3060 double carbon” target as soon as possible. Seasonal thermal storage (STS) can effectively solve the mismatch problem of solar-heating systems between the supply and demand of thermal energy. Due to the instability of solar radiation resources and the heat demand, it is necessary to analyze the dynamic response characteristics and operation strategy optimization of the system in different operation stages. Yet, related studies are still scarce. The aim of this paper is to study the switching mechanism of the operation modes and the transitive relation of the system energy in different operation stages based on a pilot solar-heating system with STS in Huangdicheng, northern China. The impacts of different heating strategies on the system performance were also analyzed with a dynamic simulated method in TRNSYS. The results showed that the solar fraction of the system reached 89.4% in the third year, which was 3.6% higher than that in the first year. The quality–quantity heating operation strategies are effective ways to improve the discharge efficiency of the STS and the system performance without a heat pump. The electricity consumption of the pump on the heating side could be significantly reduced by 44.6% compared with the quality control. Ultimately, the findings in this paper are valuable for the optimization of the operation of solar-heating systems.
Keywords: solar-heating system; dynamic performance; seasonal thermal storage; underground-water-pit seasonal storage; operation strategies solar-heating system; dynamic performance; seasonal thermal storage; underground-water-pit seasonal storage; operation strategies

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MDPI and ACS Style

Li, X.; Qiu, H.; Wang, Z.; Li, J.; Yuan, G.; Guo, X.; Jin, L. Numerical Investigation of a Solar-Heating System with Solar-Tower Receiver and Seasonal Storage in Northern China: Dynamic Performance Assessment and Operation Strategy Analysis. Energies 2023, 16, 5505. https://doi.org/10.3390/en16145505

AMA Style

Li X, Qiu H, Wang Z, Li J, Yuan G, Guo X, Jin L. Numerical Investigation of a Solar-Heating System with Solar-Tower Receiver and Seasonal Storage in Northern China: Dynamic Performance Assessment and Operation Strategy Analysis. Energies. 2023; 16(14):5505. https://doi.org/10.3390/en16145505

Chicago/Turabian Style

Li, Xiaoxia, Husheng Qiu, Zhifeng Wang, Jinping Li, Guobin Yuan, Xiao Guo, and Lifeng Jin. 2023. "Numerical Investigation of a Solar-Heating System with Solar-Tower Receiver and Seasonal Storage in Northern China: Dynamic Performance Assessment and Operation Strategy Analysis" Energies 16, no. 14: 5505. https://doi.org/10.3390/en16145505

APA Style

Li, X., Qiu, H., Wang, Z., Li, J., Yuan, G., Guo, X., & Jin, L. (2023). Numerical Investigation of a Solar-Heating System with Solar-Tower Receiver and Seasonal Storage in Northern China: Dynamic Performance Assessment and Operation Strategy Analysis. Energies, 16(14), 5505. https://doi.org/10.3390/en16145505

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