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Numerical Investigation on a Solar Heating System with Solar Tower Receiver and Seasonal Storage in North China: Dynamic Performance Assessment and Operation Strategies Analysis
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. Energies2023, 16, 5505.
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.
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. Energies2023, 16, 5505.
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.
Abstract
Solar heating technology is a promising solution to promote China to achieve the “3060 double carbon” target as soon as possible. And 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 heat demand, it is necessary to analyze the dynamic response characteristics of the system. Yet, related studies are still scarce. In this study, a solar heating system with a solar tower receiver and STS was introduced in north China. The dynamic performance of the system is analyzed with a dynamic simulated method in a typical day or typical operation modes, and the switch mechanism between multiple operation modes is also revealed. The impact of different heating strategies on system performance was analyzed. Results showed that the solar fraction of the system reached 89.4% in the third year, which was 3.6% higher than the first year. The quality-quantity heating operation strategies can be effective ways to improve the discharge efficiency of STS and the system performance without any heat pump. The electricity consumption of the pump on the heating side could be significantly reduced by 44.6% compared with the quality control.
Keywords
solar heating system; dynamic performance; seasonal thermal storage; underground water pit seasonal storage; operation strategies
Subject
Engineering, Energy and Fuel Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
