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Influence of the stratification in a hot water tank for thermal inertia improvment by latent heat thermal energy storage: a numerical study.

Number: 0011

Author(s) : IUNG A., SIMO TALA J. V., BAHRANI S. A., LAGARDERE DELEGLISE M.

Summary

The present study focusses on a parametric analysis on a composite-PCM structure aimed at enhancing the thermal storage capacity and inertia of a hot water tank. The inner surface of the tank comprises a conductive material (stainless steel) in direct contact with the stored hot water, while the outer surface is constructed using a combination of PCM and insulating material (Glass/PP composite). A constant temperature is considered on the conductive material surface, while the part exposed to the surroundings is assumed to be adiabatic. An organic PCM in solid-liquid state, specifically Rubitherm paraffin RT55, has been selected for this study. Previous research has identified PCM dimensions where the melting time approaches a constant value. The objective of this study is to investigate the impact of various temperature gradients on these parameters. Furthermore, the study has identified the presence of a maximum critical Fourier number and an optimal shape factor as the Stefan number tends towards infinity.

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Pages: 8 p.

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Details

  • Original title: Influence of the stratification in a hot water tank for thermal inertia improvment by latent heat thermal energy storage: a numerical study.
  • Record ID : 30032364
  • Languages: English
  • Subject: Technology
  • Source: 14th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings:  Paris France, May 29-31, 2024.
  • Publication date: 2024/05/31
  • DOI: http://dx.doi.org/10.18462/iir.pcm.2024.0011

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