Using electrodialysis for regeneration of aqueous lithium chloride solution in liquid desiccant air conditioning systems

Guo, Y; Ma, Z; Al-Jubainawi, A; Cooper, P; Nghiem, LD

Using electrodialysis for regeneration of aqueous lithium chloride solution in liquid desiccant air conditioning systems

Guo, Y Ma, Z Al-Jubainawi, A Cooper, P Nghiem, LD

Permalink

Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Energy and Buildings, 2016, 116, pp. 285-295
Issue Date:: 2016-03-15

Closed Access

	Filename	Description	Size
	1-s2.0-S0378778816300159-main.pdf	Published version	2.62 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Guo, Y
dc.contributor.author	Ma, Z
dc.contributor.author	Al-Jubainawi, A
dc.contributor.author	Cooper, P
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-02-11T21:22:18Z
dc.date.available	2022-02-11T21:22:18Z
dc.date.issued	2016-03-15
dc.identifier.citation	Energy and Buildings, 2016, 116, pp. 285-295
dc.identifier.issn	0378-7788
dc.identifier.issn	1872-6178
dc.identifier.uri	http://hdl.handle.net/10453/154424
dc.description.abstract	This study evaluates the potential of using electrodialysis (ED) technology to regenerate the aqueous lithium chloride (LiCl) solution, a commonly used liquid desiccant in liquid desiccant air conditioning (LDAC) systems. Experiments were performed using an ED system with ten cell pairs of ion-exchange membranes. A range of tests were carried out to examine the effects of the circulation flow rate, supplied current density, solution initial concentration and the concentration difference between the regenerated and spent solutions on the performance of ED for regenerating LiCl liquid desiccant solutions. The results showed that the regeneration capability of the ED stack decreased with the increase of the circulation flow rate. Regeneration performance in terms of the concentration enrichment increased as the supplied current density increased and the solution initial concentration decreased. It is also shown that the concentration difference between the regenerated and spent solutions is critical for the regeneration performance of ED. The ED stack can continuously increase the concentration of the regenerated solution when the concentration difference between the regenerated and spent solutions is below 5.86% (wt/wt), under the supplied current density of 57.1 mA/cm2, circulation flow rate of 100 L/h, and the initial concentrations of the solutions in the regenerated and spent tanks of 28.77% and 23.96% (wt/wt), respectively. The current efficiency of the ED in two hours running for all experiments was in the range of 55.17-73.54%. The results obtained from this study would be useful for the ED regenerator design and system integration.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation.ispartof	Energy and Buildings
dc.relation.isbasedon	10.1016/j.enbuild.2016.01.014
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering, 12 Built Environment and Design
dc.subject.classification	Building & Construction
dc.title	Using electrodialysis for regeneration of aqueous lithium chloride solution in liquid desiccant air conditioning systems
dc.type	Journal Article
utslib.citation.volume	116
utslib.for	09 Engineering
utslib.for	12 Built Environment and Design
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-02-11T21:22:16Z
pubs.publication-status	Published
pubs.volume	116

Abstract:

This study evaluates the potential of using electrodialysis (ED) technology to regenerate the aqueous lithium chloride (LiCl) solution, a commonly used liquid desiccant in liquid desiccant air conditioning (LDAC) systems. Experiments were performed using an ED system with ten cell pairs of ion-exchange membranes. A range of tests were carried out to examine the effects of the circulation flow rate, supplied current density, solution initial concentration and the concentration difference between the regenerated and spent solutions on the performance of ED for regenerating LiCl liquid desiccant solutions. The results showed that the regeneration capability of the ED stack decreased with the increase of the circulation flow rate. Regeneration performance in terms of the concentration enrichment increased as the supplied current density increased and the solution initial concentration decreased. It is also shown that the concentration difference between the regenerated and spent solutions is critical for the regeneration performance of ED. The ED stack can continuously increase the concentration of the regenerated solution when the concentration difference between the regenerated and spent solutions is below 5.86% (wt/wt), under the supplied current density of 57.1 mA/cm2, circulation flow rate of 100 L/h, and the initial concentrations of the solutions in the regenerated and spent tanks of 28.77% and 23.96% (wt/wt), respectively. The current efficiency of the ED in two hours running for all experiments was in the range of 55.17-73.54%. The results obtained from this study would be useful for the ED regenerator design and system integration.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/154424