TY - JOUR
T1 - Separation of a binary gas mixture by thermal diffusion in a two-dimensional cascade of many small cavities
AU - Saiki, Takumi
AU - Ono, Naoki
AU - Matsumoto, Sohei
AU - Watanabe, Shinya
N1 - Funding Information:
The authors thank two anonymous reviewers who provided us with many useful comments for improving the manuscript. The work was supported in part by JST (Japan Science and Technology Agency) under A-STEP (Adaptable and Seamless Technology transfer Program through Target-driven R & D) #VP30118066587 .
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12
Y1 - 2020/12
N2 - A new method for separating a binary gas mixture, such as hydrogen and carbon dioxide, is proposed and investigated numerically and experimentally. As a pressure driven flow of the mixture goes through a two-dimensional Burgers cascade, the components are separated due to thermal diffusion and the amplifying effect of the cascade. Unlike traditional cascades in isotope separation, active elements like pumps are absent. The device is made thin enough so that the flow and the concentration distribution reaches an equilibrium within each cell. We have observed separation of up to about 9% in hydrogen concentration in our prototype array consisting of over 19,000 cavities placed under a 160-degree temperature difference.
AB - A new method for separating a binary gas mixture, such as hydrogen and carbon dioxide, is proposed and investigated numerically and experimentally. As a pressure driven flow of the mixture goes through a two-dimensional Burgers cascade, the components are separated due to thermal diffusion and the amplifying effect of the cascade. Unlike traditional cascades in isotope separation, active elements like pumps are absent. The device is made thin enough so that the flow and the concentration distribution reaches an equilibrium within each cell. We have observed separation of up to about 9% in hydrogen concentration in our prototype array consisting of over 19,000 cavities placed under a 160-degree temperature difference.
KW - Burgers equation
KW - Clusius-Dickel column
KW - Hydrogen separation
KW - Micro-channel
KW - Soret effect
KW - Two-dimensional cascade
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U2 - 10.1016/j.ijheatmasstransfer.2020.120394
DO - 10.1016/j.ijheatmasstransfer.2020.120394
M3 - Article
AN - SCOPUS:85090705044
SN - 0017-9310
VL - 163
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
M1 - 120394
ER -