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

doi:10.1016/j.ijheatmasstransfer.2011.02.064

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

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

33 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 language	English (US)
Pages (from-to)	3650-3660
Number of pages	11
Journal	International Journal of Heat and Mass Transfer
Volume	54
Issue number	15-16
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2011.02.064
State	Published - Jul 2011

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatmasstransfer.2011.02.064

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

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.",

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AU - Garimella, Srinivas

AU - Fuller, Thomas F.

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AB - 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.

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

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