Thermophysical and heat transfer properties of phase change material candidate for waste heat transportation system

Akihide Kaizawa, Nobuhiro Maruoka, Atsushi Kawai, Hiroomi Kamano, Tetsuji Jozuka, Takeshi Senda, Tomohiro Akiyama

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)

Abstract

A waste heat transportation system - trans-heat (TH) system - is quite attractive that uses the latent heat of a phase change material (PCM). The purpose of this paper is to study the thermophysical properties of various sugars and sodium acetate trihydrate (SAT) as PCMs for a practical TH system and the heat transfer property between PCM selected and heat transfer oil, by using differential scanning calorimetry (DSC), thermogravimetry-differential thermal analysis (TG-DTA) and a heat storage tube. As a result, erythritol, with a large latent heat of 344 kJ/kg at melting point of 117°C, high decomposition point of 160°C and excellent chemical stability under repeated phase change cycles was found to be the best PCM among them for the practical TH system. In the heat release experiments between liquid erythritol and flowing cold oil, we observed foaming phenomena of encapsulated oil, in which oil droplet was coated by solidification of PCM.

Original languageEnglish
Pages (from-to)763-769
Number of pages7
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Volume44
Issue number7
DOIs
Publication statusPublished - 2008 May 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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