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Smart adaptive model for dynamic simulation of horizontal thermally stratified storage tanks

Author

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  • Hafez, A.M.
  • Kassem, M.A.
  • Huzayyin, O.A.

Abstract

Although, the horizontal thermally stratified storage tanks (TSST) are nowadays the most popular, especially in the domestic solar water heaters, most of the literature is oriented towards the vertical tanks. Recently, a smart adaptive model for TSST was proposed, where the grid segments size and location changes automatically according the different variations in the tank. It showed good agreement with experimental work, however the model and its validation was presented for the vertical configuration only. In this work, the adaptive-grid model is extended to the horizontal cylindrical tank orientation while accounting for the changes in grid segments cross-section during moving in the vertical direction as to be aligned with the thermocline region; the proposed model is validated with experimental data available in the literature. The results show an excellent agreement with the literature and yield a significant reduction in the number of nodes needed for the modeling (∼32.7% reduction) when compared to other horizontal tank models while accounting for the changes tank geometry in the vertical direction.

Suggested Citation

  • Hafez, A.M. & Kassem, M.A. & Huzayyin, O.A., 2018. "Smart adaptive model for dynamic simulation of horizontal thermally stratified storage tanks," Energy, Elsevier, vol. 142(C), pages 782-792.
    • Handle: RePEc:eee:energy:v:142:y:2018:i:c:p:782-792
    DOI: 10.1016/j.energy.2017.10.079
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    References listed on IDEAS

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    1. Chung, Jae Dong & Cho, Sung Hwan & Tae, Choon Seob & Yoo, Hoseon, 2008. "The effect of diffuser configuration on thermal stratification in a rectangular storage tank," Renewable Energy, Elsevier, vol. 33(10), pages 2236-2245.
    2. Savicki, Darci L. & Vielmo, Horácio A. & Krenzinger, Arno, 2011. "Three-dimensional analysis and investigation of the thermal and hydrodynamic behaviors of cylindrical storage tanks," Renewable Energy, Elsevier, vol. 36(5), pages 1364-1373.
    3. Okoro, O.I & Madueme, T.C, 2004. "Solar energy investments in a developing economy," Renewable Energy, Elsevier, vol. 29(9), pages 1599-1610.
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