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Performance testing of a cross-flow membrane-based liquid desiccant dehumidification system

Bai, Hongyu; Zhu, Jie; Chen, Ziwei; Ma, Lina; Wang, Ruzhu; Li, Tingxian

Authors

Hongyu Bai

ZIWEI CHEN ZIWEI.CHEN@NOTTINGHAM.AC.UK
Research Fellow

Lina Ma

Ruzhu Wang

Tingxian Li



Abstract

A membrane-based liquid desiccant dehumidification system is one of high energy efficient dehumidification approaches, which allows heat and moisture transfers between air stream and desiccant solution without carryover problem. The system performance is investigated experimentally with calcium chloride, and the impacts of main operating parameters on dehumidification effectiveness (i.e. sensible, latent and total effectiveness) are evaluated, which include dimensionless parameters (i.e. solution to air mass flow rate ratio m? and number of heat transfer units NTU) and solution properties (i.e. concentration Csol and inlet temperature Tsol,in). The sensible, latent and total effectiveness reach the maximum values of 0.49, 0.55, and 0.53 respectively at m?= 3.5 and NTU = 12, and these effectiveness are not limited by m? and NTU when m? > 2 and NTU > 10. Both the latent and total effectiveness increase with Csol , while almost no variation is observed in the sensible effectiveness. All effectiveness can be improved by decreasing Tsol,in. The experimental data provide a full map of main design parameters for the membrane-based liquid desiccant air conditioning technology.

Citation

Bai, H., Zhu, J., Chen, Z., Ma, L., Wang, R., & Li, T. (2017). Performance testing of a cross-flow membrane-based liquid desiccant dehumidification system. Applied Thermal Engineering, 119, https://doi.org/10.1016/j.applthermaleng.2017.03.058

Journal Article Type Article
Acceptance Date Mar 12, 2017
Online Publication Date Mar 14, 2017
Publication Date Jun 5, 2017
Deposit Date Mar 14, 2017
Publicly Available Date Mar 28, 2024
Journal Applied Thermal Engineering
Print ISSN 1359-4311
Electronic ISSN 1873-5606
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 119
DOI https://doi.org/10.1016/j.applthermaleng.2017.03.058
Keywords liquid desiccant; membrane-based; dehumidification; performance testing; effectiveness
Public URL https://nottingham-repository.worktribe.com/output/864257
Publisher URL http://www.sciencedirect.com/science/article/pii/S1359431116336389

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