Share

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

Author(s) : WANG Z., FENG S., SHI X., et al.

Summary

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.

Available documents

Format PDF

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Experimental study on concentration of aqueous lithium bromide solution by vacuum membrane distillation process.
  • Record ID : 2009-1557
  • Languages: English
  • Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2008/07/14

Links


See other articles from the proceedings (125)
See the conference proceedings

Indexing