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Experimental study of a membrane-based dehumidification cooling system

Chen, Ziwei; Zhu, Jie; Bai, Hongyu; Yan, Yuying; Zhang, Lizhi

Authors

Hongyu Bai

YUYING YAN YUYING.YAN@NOTTINGHAM.AC.UK
Professor of Thermofluids Engineering_*d

Lizhi Zhang



Abstract

Membrane-based liquid desiccant dehumidification has attracted increasing interests with elimination of solution droplets carryover problem. In this study, a membrane-based hybrid liquid desiccant dehumidification cooling system is developed, which is mainly composed of a dehumidifier, a regenerator and an evaporative cooler. The system is capable to remove latent load by the liquid desiccant dehumidification unit and simultaneously to handle sensible load with an evaporative cooling unit. This paper presents a performance evaluation study of the hybrid system with calcium chloride as liquid desiccant based on experimental data. Series of tests are conducted to identify influences of operating variables and conditions (i.e. desiccant solution concentration ratio, regeneration temperature, inlet air condition, etc.) on the system performance. The experimental results indicate that the system is viable for dehumidification cooling purpose. Furthermore, it is noteworthy that mass balance between the dehumidifier and regenerator should be achieved for system steady operation. Thermal COPth of 0.70 and 24 electrical COPel of 2.62 are achieved respectively under steady operating condition at CaCl2 concentration ratio of 36%.

Citation

Chen, Z., Zhu, J., Bai, H., Yan, Y., & Zhang, L. (2017). Experimental study of a membrane-based dehumidification cooling system. Applied Thermal Engineering, 115, https://doi.org/10.1016/j.applthermaleng.2016.10.153

Journal Article Type Article
Acceptance Date Oct 24, 2016
Online Publication Date Oct 27, 2016
Publication Date Mar 25, 2017
Deposit Date Oct 25, 2016
Publicly Available Date Oct 27, 2016
Journal Applied Thermal Engineering
Print ISSN 1359-4311
Electronic ISSN 1873-5606
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 115
DOI https://doi.org/10.1016/j.applthermaleng.2016.10.153
Keywords Liquid desiccant, Dehumidification, Regeneration, Membrane, Experimental tests
Public URL http://eprints.nottingham.ac.uk/id/eprint/37906
Publisher URL http://www.sciencedirect.com/science/article/pii/S1359431116326977
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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