Devolopment of a mini-channel gas separator utilizing Soret effect

Naoki Ono, Takahiro Wako, Tomohiro Higurashi, Sohei Matsumoto

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


Hydrogen is still one of the candidates of future energy source. However, the refining and separating process of hydrogen requires certain amount of chemical and thermal cost. We attempted to utilize the Soret effect to separate hydrogen from mixed gas. The Soret effect is mass transport phenomenon caused only by temperature gradient, which could cost much less than current refining methods. We confirmed the hydrogen separation from a mixture of hydrogen and carbon dioxide, by a simple experiment with stainless mini tube. However, the obtained concentration increment of hydrogen gas was found to be as small as 4 %. For practical purpose, the multi-step repeated separation with mini channels will be necessary. In this study, we attempted to build a MEMS device to separate hydrogen, as the first step to realize multi-step miniature MEMS system. The authors experimentally found that the single-step MEMS device functioned properly and that the hydrogen separation was obtained as expected.

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: 2014 Aug 102014 Aug 15


Other15th International Heat Transfer Conference, IHTC 2014


  • Hydrogen and energy carries
  • Mass transfer and drying
  • mini channel
  • Soret effect

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics


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