Modeling of a flat plate membrane-distillation system for liquid desiccant regeneration in air-conditioning applications

Alexander S. Rattner, Ananda Krishna Nagavarapu, Srinivas Garimella, Thomas F. Fuller

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

A thermally driven flat plate air gap membrane distillation liquid desiccant regenerator for lithium chloride in dehumidification applications is modeled. Operating conditions and device geometry are optimized, and it is found that membrane materials have little influence on regenerator performance. It is shown that radiation heat transfer across the air gap cannot be neglected. The regenerator removes 11.4 g min-1 cm-3 of moisture with a COP of 0.372 for an inlet solution concentration of 0.38, solution flow rate of 50 ml min-1, and heated solution temperature of 135 °C. This design has negligible desiccant carry-over losses and operates without a blower.

Original languageEnglish (US)
Pages (from-to)3650-3660
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume54
Issue number15-16
DOIs
StatePublished - Jul 1 2011

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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