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Dehumidification of Air by the Composite Membrane Coated with Hydrophilic Polymer on Inorganic Substrate

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Abstract:

A membrane permeable to water vapor was prepared and used for dehumidification of air. At a given feed flow rate, the permeation ratios were almost independent to relative humidities of feed stream; The permeation ratios were about 45%, 60%, and 25% at feed flow rate of 50, 70, and 90cc/min, respectively. Permeation ratio might also be enhanced with increasing feed flow rate. However, the permeation ratio (about 25%) at a feed flow rate of 90cc/min was much less than at 50cc/min (about 45%) and 70cc/min (about 60%). This phenomenon might be explained that a water film does form at surface of membrane because the amount of water vapor contained in feed stream of 90cc/min was much more than the permeate through the membrane.

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Periodical:

Materials Science Forum (Volume 569)

Pages:

337-340

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.569.337

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Online since:

January 2008

Authors:

Kun Ho Song, Seong Heon Cho, Kwang Rae Lee

Keywords:

Air, Dehumidification, Hydrophilic, Membrane, Water Vapor

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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