Study of cycle output improvement by work-fluid including phase change material

Shin ichi Morita, Kota Tanimura, Yasutaka Hayamizu, Takanobu Yamada, Akihiko Horibe, Naoto Haruki, Toshiaki Setoguchi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper deals with the output improvement of heating and cooling cycle by using the work-fluid including phase change material. The experimental study is carried out by heat exchange between work-fluid and heat transfer surface. The work-fluid is flown to a high temperature or a low temperature heat transfer surface from the narrow path. In order to increase the amount of the heat transmission, a trace of Diethylether (boiling point 34.8 °C), as a phase change material (PCM), is added to the work-fluid. The parameters of the experiment are additive amount of PCM, the rotational speed of the displacer piston and the temperature of heat transfer surface. It is clarified that the increasing of engine cycle output is brought by the PCM addition. The effect of PCM addition is evaluated by output ratio which is defined from the experimental cycle output data. The requirements for acquiring the increasing effect of output by adding PCM are clarified.

Original languageEnglish
Pages (from-to)558-563
Number of pages6
JournalJournal of Thermal Science
Issue number6
Publication statusPublished - Dec 1 2016


  • Heat transfer
  • Low temperature difference engine
  • Output improvement
  • Phase change material

ASJC Scopus subject areas

  • Condensed Matter Physics


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