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The effect of diffuser configuration on thermal stratification in a rectangular storage tank

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  • Chung, Jae Dong
  • Cho, Sung Hwan
  • Tae, Choon Seob
  • Yoo, Hoseon

Abstract

This study is to systematically analyze the effect of various kinds of design factors on the stratification performance of a rectangular storage tank. Special interest is focused on the diffuser configuration, which crucially impacts the performance of a storage tank. Herein, a new diffuser shape is proposed, which exemplifies improved performance. Three-dimensional unsteady numerical experiments are conducted for four design parameters of a stratified thermal storage tank: Three design parameters with three levels (i.e., the Reynolds number=400, 800, and 1200; the Froude number=0.5, 1.0, and 2.0; and the area ratio of the diffuser to tank cross-section=0.0327, 0.0582, and 0.131) and one design parameter having two levels (i.e., diffuser type=radial plate type and radial adjusted plate type). Orthogonal array L18(2×37) is adopted for the analysis of variance. The result gives quantitative estimation of the various design parameters affecting the performance and helps to determine the main factors for the optimum design of a stratified thermal storage tank. In the range of parameters considered, the Reynolds number is found to be the most dominant parameter. Moreover, the diffuser shape plays a significant role on the performance of a stratified thermal storage tank.

Suggested Citation

  • 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.
  • Handle: RePEc:eee:renene:v:33:y:2008:i:10:p:2236-2245
    DOI: 10.1016/j.renene.2007.12.013
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    1. Parida, Dipti Ranjan & Advaith, S. & Dani, Nikhil & Basu, Saptarshi, 2022. "Assessing the impact of a novel hemispherical diffuser on a single-tank sensible thermal energy storage system," Renewable Energy, Elsevier, vol. 183(C), pages 202-218.
    2. Ying Li & Fengzhong Sun & Qiannan Zhang & Xuehong Chen & Wei Yuan, 2020. "Numerical Simulation Study on Structure Optimization and Performance Improvement of Hot Water Storage Tank in CHP System," Energies, MDPI, vol. 13(18), pages 1-14, September.
    3. Pilotelli, M. & Grassi, B. & Lezzi, A.M. & Beretta, G.P., 2022. "Flow models of perforated manifolds and plates for the design of a large thermal storage tank for district heating with minimal maldistribution and thermocline growth," Applied Energy, Elsevier, vol. 322(C).
    4. María Gasque & Federico Ibáñez & Pablo González-Altozano, 2021. "Minimum Number of Experimental Data for the Thermal Characterization of a Hot Water Storage Tank," Energies, MDPI, vol. 14(16), pages 1-16, August.
    5. Ruth M. Saint & Céline Garnier & Francesco Pomponi & John Currie, 2018. "Thermal Performance through Heat Retention in Integrated Collector-Storage Solar Water Heaters: A Review," Energies, MDPI, vol. 11(6), pages 1-26, June.
    6. 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.
    7. Abdelsalam, M.Y. & Teamah, H.M. & Lightstone, M.F. & Cotton, J.S., 2020. "Hybrid thermal energy storage with phase change materials for solar domestic hot water applications: Direct versus indirect heat exchange systems," Renewable Energy, Elsevier, vol. 147(P1), pages 77-88.
    8. 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.
    9. Streckiene, Giedre & Martinaitis, Vytautas & Andersen, Anders N. & Katz, Jonas, 2009. "Feasibility of CHP-plants with thermal stores in the German spot market," Applied Energy, Elsevier, vol. 86(11), pages 2308-2316, November.
    10. Kumar, G. Senthil & Nagarajan, D. & Chidambaram, L.A. & Kumaresan, V. & Ding, Y. & Velraj, R., 2016. "Role of PCM addition on stratification behaviour in a thermal storage tank – An experimental study," Energy, Elsevier, vol. 115(P1), pages 1168-1178.
    11. Lei Li & Yude Wu & Yi Lu & Xiao Yang & Qiyang Wang & Xiaoai Wang & Yulin Wang, 2022. "Numerical Simulation on the Structural Design of a Multi-Pore Water Diffuser during the External Ice Melting Process of an Ice Storage System," Energies, MDPI, vol. 15(6), pages 1-17, March.
    12. Pinel, Patrice & Cruickshank, Cynthia A. & Beausoleil-Morrison, Ian & Wills, Adam, 2011. "A review of available methods for seasonal storage of solar thermal energy in residential applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(7), pages 3341-3359, September.
    13. Wanruo Lou & Lingai Luo & Yuchao Hua & Yilin Fan & Zhenyu Du, 2021. "A Review on the Performance Indicators and Influencing Factors for the Thermocline Thermal Energy Storage Systems," Energies, MDPI, vol. 14(24), pages 1-19, December.
    14. Baeten, Brecht & Confrey, Thomas & Pecceu, Sébastien & Rogiers, Frederik & Helsen, Lieve, 2016. "A validated model for mixing and buoyancy in stratified hot water storage tanks for use in building energy simulations," Applied Energy, Elsevier, vol. 172(C), pages 217-229.
    15. Dahash, Abdulrahman & Ochs, Fabian & Janetti, Michele Bianchi & Streicher, Wolfgang, 2019. "Advances in seasonal thermal energy storage for solar district heating applications: A critical review on large-scale hot-water tank and pit thermal energy storage systems," Applied Energy, Elsevier, vol. 239(C), pages 296-315.
    16. Lou, Wanruo & Xie, Baoshan & Aubril, Julien & Fan, Yilin & Luo, Lingai & Arrivé, Arnaud, 2023. "Optimized flow distributor for stabilized thermal stratification in a single-medium thermocline storage tank: A numerical and experimental study," Energy, Elsevier, vol. 263(PA).
    17. Xiang, Yutong & Gao, Meng & Furbo, Simon & Fan, Jianhua & Wang, Gang & Tian, Zhiyong & Wang, Dengjia, 2023. "Assessment of inlet mixing during charge and discharge of a large-scale water pit heat storage," Renewable Energy, Elsevier, vol. 217(C).
    18. Kurşun, Burak & Ökten, Korhan, 2018. "Effect of rectangular hot water tank position and aspect ratio on thermal stratification enhancement," Renewable Energy, Elsevier, vol. 116(PA), pages 639-646.
    19. Wunvisa Tipasri & Amnart Suksri & Karthikeyan Velmurugan & Tanakorn Wongwuttanasatian, 2022. "Energy Management for an Air Conditioning System Using a Storage Device to Reduce the On-Peak Power Consumption," Energies, MDPI, vol. 15(23), pages 1-19, November.
    20. Garnier, Celine & Muneer, Tariq & Currie, John, 2018. "Numerical and empirical evaluation of a novel building integrated collector storage solar water heater," Renewable Energy, Elsevier, vol. 126(C), pages 281-295.

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