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Etudes expérimentales sur les propriétés de transfert de vapeur d'eau au travers des membranes.

Experimental studies of transport properties of water vapour through membranes.

Auteurs : MIN J., LIU X., HU T.

Résumé

An experimental set-up has been designed and constructed to investigate the water vapour transport properties of membranes. The test section of the experimental set-up consists mainly of an airflow channel, a membrane, and a water tank, which constitute a sandwich structure. An air gap exists between the membrane and the water in the water tank. The air fluid in the channel flows over the membrane and is humidified by the water through the air gap and membrane. The process of moisture transfer from the water to the air stream in the channel is described using a serial resistance model. The channel has a 5 × 50 mm cross-section and a 800 mm length. Tests were conducted on two membranes including the PES (polyethersulfone) and cellulose membranes. Tests were carried out with fixed air gap thickness of 5 mm for airflow rates from 1 to 5 L/min, yielding Reynolds numbers from 39 to 195. The moisture resistance through membrane was obtained by subtracting the convective moisture resistance in the channel and the moisture resistance caused by the air gap from the total moisture resistance. The results suggest that both membranes have relatively good moisture permeability.

Documents disponibles

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Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental studies of transport properties of water vapour through membranes.
  • Identifiant de la fiche : 2009-0268
  • Langues : Anglais
  • Source : 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Date d'édition : 14/07/2008

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