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Structure optimization of solar thermal storage tank and analysis of its thermal storage and release performance
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Zhi GENG1, 2, 3, Mengqiong ZHANG1, Xiangwu LU1, Helei ZHANG1, Lina ZHANG1, Jianli WANG2, Tianqing SHI2, Yuanyuan LIU2, Bin ZHANG2, Yujiong GU4
Thermal Power Generation | 2023, 52(2) : 64 - 72
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Thermal Power Generation | 2023, 52(2): 64-72
• Research of thermal energy storage technology •
Structure optimization of solar thermal storage tank and analysis of its thermal storage and release performance
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Zhi GENG1, 2, 3, Mengqiong ZHANG1, Xiangwu LU1, Helei ZHANG1, Lina ZHANG1, Jianli WANG2, Tianqing SHI2, Yuanyuan LIU2, Bin ZHANG2, Yujiong GU4
Affiliations
  • 1.School of Aero Engine, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
  • 2.Huadian Zhengzhou Mechanical Design Institute Co., Ltd., Zhengzhou 450046, China
  • 3.Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
  • 4.National Thermal Power Engineering & Technology Research Center, North China Electric Power University, Beijing 102206, China
Published: 2023-02-25 doi: 10.19666/j.rlfd.202210257
Outline
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Sensible heat storage is an effective way to solve the instability and fluctuation of solar thermal utilization. The common water medium was used as the medium material of sensible heat energy storage, and the heat storage tank device was used to realize the application of solar energy heat storage and release. The basic shape of the initially selected water tank was cylindrical. The conical structure of the tank bottom was optimized, and the respective heat storage change characteristics of the heat storage water tank under the three working conditions of 40°, 45° and 50° cone bottom angles were explored. Based on the unsteady laminar heat transfer model, the volume average temperature change and the maximum volume temperature change of the heat storage device were simulated by using the Fluent numerical software. The results showed that, when the cone bottom angle was 50°, the overall heat charging and discharging performance of the heat storage tank was better. When the average temperature of the heat storage tank body was 308.612 K under this parameter, the average temperature of the heat storage tank body was 0.202% and 0.053% higher than that of the heat storage tank body with a cone bottom angle of 40°and 45°, respectively. On this basis, the dynamic change law of heat storage and heat release of 50°tank was further analyzed, and the distribution characteristics of key indicators such as volume fraction and velocity field in the process of water storage and drainage inside the tank were studied. This research can provide some reference for the optimal design and engineering application of solar energy thermal storage system.

solar energy  /  heat storage tank  /  structural optimization  /  heat storage  /  thermal analysis  /  numerical simulation
Zhi GENG, Mengqiong ZHANG, Xiangwu LU, Helei ZHANG, Lina ZHANG, Jianli WANG, Tianqing SHI, Yuanyuan LIU, Bin ZHANG, Yujiong GU. Structure optimization of solar thermal storage tank and analysis of its thermal storage and release performance[J]. Thermal Power Generation, 2023 , 52 (2) : 64 -72 . DOI: 10.19666/j.rlfd.202210257
Funding
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  • Henan Province Science and Technology Research Project(212102210009)
  • Young Elite Scientists Sponsorship Program by Henan Association for Science and Technology(2022HYTP021)
  • Science and Technology Guidance Program Project of Henan Civil Architecture Society(202102)
  • Key Science and Technology Funded Project of China Huadian Corporation(CHDKJ22-01-23)
  • The Energy and Power Teaching Research and Practice Program of Colleges and Universities sponsored by the Ministry of Education Guidance Committee(NSJZW2021Y-99)
Appendix
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Year 2023 volume 52 Issue 2
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43
4
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Article Info
doi: 10.19666/j.rlfd.202210257
  • Receive Date：2022-10-16
  • Online Date：2026-01-23
  • Published：2023-02-25
Article Data
Affiliations
History
  • Received：2022-10-16
Funding
Henan Province Science and Technology Research Project(212102210009)
Young Elite Scientists Sponsorship Program by Henan Association for Science and Technology(2022HYTP021)
Science and Technology Guidance Program Project of Henan Civil Architecture Society(202102)
Key Science and Technology Funded Project of China Huadian Corporation(CHDKJ22-01-23)
The Energy and Power Teaching Research and Practice Program of Colleges and Universities sponsored by the Ministry of Education Guidance Committee(NSJZW2021Y-99)
Affiliations
    1.School of Aero Engine, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
    2.Huadian Zhengzhou Mechanical Design Institute Co., Ltd., Zhengzhou 450046, China
    3.Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China
    4.National Thermal Power Engineering & Technology Research Center, North China Electric Power University, Beijing 102206, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202210257
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红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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