Study and development of a mini-tube gas separator utilizing the Soret effect

Shunsuke Kuwatani, Shinya Watanabe, Naoki Ono

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Soret effect is a phenomenon in which a temperature gradient gives rise to a concentration gradient. In this study, we attempted a simple technique for the separation of hydrogen from a gas mixture by utilizing the Soret effect. A gas mixture of hydrogen and carbon dioxide was introduced into a metal mini tube in which a temperature gradient was established in the direction normal to the flow. The experiment demonstrated that hydrogen was actually separated from the gas mixture, although the separation was very small with the present apparatus. From results of the experiments and computational fluid dynamics (CFD) analysis, we believe that the layer of high hydrogen concentration that moved toward the heating wall was very thin. It would be necessary to extract the high concentration of hydrogen flowing near the wall to increase the separation efficiency.

Original languageEnglish
Pages (from-to)31-44
Number of pages14
JournalJournal of Thermal Science and Technology
Volume7
Issue number1
DOIs
Publication statusPublished - 2012

Fingerprint

gas tubes
separators
Separators
Hydrogen
Gases
Gas mixtures
gas mixtures
hydrogen
Thermal gradients
temperature gradients
computational fluid dynamics
dioxides
Carbon Dioxide
Dynamic analysis
carbon dioxide
Carbon dioxide
Computational fluid dynamics
Metals
Experiments
tubes

Keywords

  • CFD
  • Hydrogen separation
  • Re-mixing
  • Separation distance
  • Soret effect

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)

Cite this

Study and development of a mini-tube gas separator utilizing the Soret effect. / Kuwatani, Shunsuke; Watanabe, Shinya; Ono, Naoki.

In: Journal of Thermal Science and Technology, Vol. 7, No. 1, 2012, p. 31-44.

Research output: Contribution to journalArticle

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