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Thermal stratification in a solar hot water storage tank with mantle heat exchanger

Author

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  • Li, Qiong
  • Huang, Xiaoqiao
  • Tai, Yonghang
  • Gao, Wenfeng
  • Wenxian, L.
  • Liu, Wuming

Abstract

Solar hot water storage tanks with mantle heat exchangers are widely used in balcony wall-mounted solar heating system in China. The thermal behaviour of a novelty mantle solar water tank with vertical inlet and outlet water tubes has been investigated both experimentally and numerically. Dimensionless parameter can well characterize the stratification of water and thermocline dynamics in the water tank. In the discharging mode, as the dimensionless time increases, the thermocline thickness gradually increases, and the mixing in the water tank intensifies. The dimensionless exergy gradually decreases with the increase of the dimensionless time.

Suggested Citation

  • Li, Qiong & Huang, Xiaoqiao & Tai, Yonghang & Gao, Wenfeng & Wenxian, L. & Liu, Wuming, 2021. "Thermal stratification in a solar hot water storage tank with mantle heat exchanger," Renewable Energy, Elsevier, vol. 173(C), pages 1-11.
    • Handle: RePEc:eee:renene:v:173:y:2021:i:c:p:1-11
    DOI: 10.1016/j.renene.2021.03.105
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    References listed on IDEAS

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    Cited by:

    1. Shidong Wang & Xing Wang & Mingqiang Mao & Yongtao Wang & Shiping Liu & Baoming Luo & Tao Li, 2023. "The Influence of Storage Tank Volume on the Nighttime Heat Dissipation and Freezing Process of All-Glass Vacuum Tube Solar Water Heaters," Energies, MDPI, vol. 16(12), pages 1-24, June.
    2. Liu, Xingan & Wu, Xiaoyang & Xia, Tianyang & Fan, Zilong & Shi, Wenbin & Li, Yiming & Li, Tianlai, 2022. "New insights of designing thermal insulation and heat storage of Chinese solar greenhouse in high latitudes and cold regions," Energy, Elsevier, vol. 242(C).
    3. Dzierwa, Piotr & Taler, Jan & Peret, Patryk & Taler, Dawid & Trojan, Marcin, 2022. "Transient CFD simulation of charging hot water tank," Energy, Elsevier, vol. 239(PC).
    4. Piyatida Trinuruk & Papangkorn Jenyongsak & Somchai Wongwises, 2022. "Comparative Study of Inlet Structure and Obstacle Plate Designs Affecting the Temperature Stratification Characteristics," Energies, MDPI, vol. 15(6), pages 1-25, March.
    5. Tian, Shuai & Lu, Yuxin & Zhou, Xin & Zhang, Lun & An, Jingjing & Yan, Da & Shi, Xing & Jin, Xing, 2023. "A new perspective of solar hot water system operation optimization: Supply and demand matching," Renewable Energy, Elsevier, vol. 207(C), pages 89-104.
    6. Miguel Castro Oliveira & Muriel Iten & Henrique A. Matos, 2022. "Review on Water and Energy Integration in Process Industry: Water-Heat Nexus," Sustainability, MDPI, vol. 14(13), pages 1-24, June.

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