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Experimental investigation on single-medium stratified thermal energy storage system

Author

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  • Advaith, S.
  • Parida, Dipti Ranjan
  • Aswathi, K.T.
  • Dani, Nikhil
  • Chetia, Utpal Kumar
  • Chattopadhyay, Kamanio
  • Basu, Saptarshi

Abstract

The demand for renewable energy sources is limited by their inherent intermittent nature. The thermal energy storage technique overcomes this shortcoming by allowing storage of naturally occurring energy (e.g. solar) during “non-peak hours”. The article presents an experimental investigation of the sparsely studied ‘single medium thermocline’ (SMT) based single tank sensible thermal energy storage (TES). The work aims to reconsider its potential by minimizing the fluid dynamic perturbations during the charging cycle which disrupt the stability of the thermocline leading to undesirable energy losses. The article discusses the effect of Atwood number (density stratification) and mean temperature on TES effectiveness as well as providing the appropriate thermodynamic insights. Implementation of the experimental procedures and strategies discussed in this article demonstrates a stable thermocline which persists for more than 6 h (hours) with minimal energy degradation.

Suggested Citation

  • Advaith, S. & Parida, Dipti Ranjan & Aswathi, K.T. & Dani, Nikhil & Chetia, Utpal Kumar & Chattopadhyay, Kamanio & Basu, Saptarshi, 2021. "Experimental investigation on single-medium stratified thermal energy storage system," Renewable Energy, Elsevier, vol. 164(C), pages 146-155.
    • Handle: RePEc:eee:renene:v:164:y:2021:i:c:p:146-155
    DOI: 10.1016/j.renene.2020.09.092
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    References listed on IDEAS

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    Cited by:

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    2. Pu, Liang & Zhang, Shengqi & Xu, Lingling & Ma, Zhenjun & Wang, Xinke, 2021. "Numerical study on the performance of shell-and-tube thermal energy storage using multiple PCMs and gradient copper foam," Renewable Energy, Elsevier, vol. 174(C), pages 573-589.
    3. 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.
    4. 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.
    5. 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).

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