首页|A new design to enhance the conductive and convective heat transfer of latent heat thermal energy storage units

A new design to enhance the conductive and convective heat transfer of latent heat thermal energy storage units

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  • NSTL
  • Elsevier
The gap between the existing energy demand and supply is of immense significance worldwide, suggesting the need to develop highly effective storage technologies. This study concerns an innovative design for Phase Change Material (PCM) thermal energy storage suitable for solar energy applications. The proposed configuration for the tube benefits from the wavy profiles with different amplitude characteristics and the twisted shape. The impacts of the simultaneous implementation of the wavy and twisted tube are also examined to achieve an optimal model. The best design for the thermal energy storage is then integrated with the ascending and descending conical container shapes to gain the potential advantage of natural convection. Ultimately, the best case is treated with the nanoparticles (1, 3 and 5 vol%) to enhance thermal conductivity in the storage. The results reveal that the descending wave amplitude is the most effective profile when the least charging time is needed. Furthermore, the ascending conical shape container enhances the charging process (68 min for the complete charging process), taking full advantage of the natural convection phenomenon. Overall, the ultimate heat storage design offers nearly 83% faster charging time than conventional straight tube heat storage units.

Latent heat thermal energy storageDouble-pipe heat exchangerWavy tubeTwisted tubeConical containerNanoparticlesPhase change material

Alan S. Fung、Arianna Brambilla、Amir Hossein Eisapour、A. H. Shafaghat、Hayder I. Mohammed、Mehdi Eisapour、Pouyan Talebizadehsardari

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Department of Mechanical and Industrial Engineering, Toronto Metropolitan University

School of Architecture, Design and Planning, The University of Sydney

Department of Energy and Aerospace Engineering, School of Mechanical Engineering, Shiraz University

Department of Physics, College of Education, University of Garmian

Department of Chemical and Petroleum Engineering, University of Calgary

Centre for Sustainable Energy Use in Food Chains, Institute of Energy Futures, Brunel University London

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2022

10.1016/j.applthermaleng.2022.118955

Applied thermal engineering

Applied thermal engineering

EISCI
ISSN：1359-4311
年,卷(期)：2022.215
  • 17
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