Influence of several parameters on heat storage and release enhancement behavior of latent heat storage paraffin with aluminum fiber materials

Naoto Haruki, Akihiko Horibe, Yoshihiko Sano, Kohei Hachiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Recently, there has been some concern in the latent heat energy storage system as a practical means of reducing energy consumption and as an effective solution against the gap between on-peak and off-peak electrical power demand. Paraffin is used as the latent heat energy storage material, because paraffin has relatively high latent heat and various melting points. However, the low thermal conductivity of paraffin leads to more time to latent heat storage and release processes. Therefore, it is necessary to improve the latent heat storage and release processes of paraffin. In our laboratory, it is noted that the metal fiber materials are mixed to the paraffin in order to enhance the effective thermal conductivity of paraffin. The present investigation deals with the heat storage and heat release process of the paraffin with metal fiber materials as a function of volumetric fiber fraction and heating (cooling) temperature, experimentally. As a result, the heat release characteristic of paraffin with metal fiber materials was improved by enhanced effective thermal conductivity. On the other hand, the heat storage process of paraffin with metal fiber materials was influenced by the natural convection flow, and it remains independent of the volumetric fiber fraction because of the interaction between enhanced effective thermal conductivity and suppression of the natural convection flow by the metal fiber materials.

Original languageEnglish
Title of host publicationProceedings of the 15th International Heat Transfer Conference, IHTC 2014
PublisherBegell House Inc.
Publication statusPublished - 2014
Event15th International Heat Transfer Conference, IHTC 2014 - Kyoto, Japan
Duration: Aug 10 2014Aug 15 2014

Other

Other15th International Heat Transfer Conference, IHTC 2014
CountryJapan
CityKyoto
Period8/10/148/15/14

Keywords

  • Heat transfer enhancement
  • Metal fiber materials
  • Natural Convection
  • Paraffin
  • Thermal storage

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics

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