Partager

Etude expérimentale sur la concentration d'une solution aqueuse de bromure de lithium grâce au procédé de distillation par membrane sous vide.

Experimental study on concentration of aqueous lithium bromide solution by vacuum membrane distillation process.

Auteurs : WANG Z., FENG S., SHI X., et al.

Résumé

This study aims to investigate the applicability of vacuum membrane distillation for concentrating aqueous lithium bromide solution, and to analyze the feasibility of applying vacuum membrane distillation process to the absorption refrigeration system. Hydrophobic polyvinylidene fluoride (PVDF) was adopted as the membrane material, and was made into hollow fibre membrane module. Commercial aqueous lithium bromide solution with 50% concentration flows through the inner side of membrane thread while the vacuum degree in outer side retain constant from 0.09 to 0.095 MPa, the feed temperature varied from 65 to 90°C. The experiments showed that the permeation flux of vapour water increased quickly when the feed temperature rose from 65 to 90°C. The permeation flux also increased as the feed flux increased; however, the feed flux was limited by the intensity of PVDF. The permeation flux went up when the vacuum degree of cold side increased, but the tendency went flat as the vacuum degree increased more. Hollow fibre membrane module can provide quite adequate contact area for the feed solution in limited space, and need not heat the solution to boiling point. So it may become a new type of separation device for lithium bromide absorption refrigeration system.

Documents disponibles

Format PDF

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 study on concentration of aqueous lithium bromide solution by vacuum membrane distillation process.
  • Identifiant de la fiche : 2009-1557
  • 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

Liens


Voir d'autres communications du même compte rendu (125)
Voir le compte rendu de la conférence

Indexation