Capacitive deionization regeneration as a possible improvement of membrane regeneration method for absorption air-conditioning system

Xiu-Wei Li, Xiao-Song Zhang, Hao Wang and Zhuo Zhang

Applied Energy, 2016, vol. 171, issue C, 405-414

Abstract: Driven by renewable energy and being environment friendly, the absorption air-conditioning system is a good choice for green buildings. Concentrating the absorbent solution with electrodialysis method, the membrane regeneration absorption system has higher performance than the traditional absorption system. Its theoretical coefficient of performance can approach 6 under certain working conditions. However, the experimental data in this paper reveals the actual coefficient of performance of the membrane regeneration system is about 1–2, much lower than expected. It is caused by the energy loss in heating and electrochemical reactions. To improve, a capacitive deionization regeneration method is proposed: strong absorbent solution and pure water are acquired with the joint work of two units. Analysis has been made on the absorption air-conditioning system adopting this method. The mass and energy equations have been developed and some parameters have been investigated for performance optimization. Even with conservative prediction, the results show the capacitive deionization method has better performance than the membrane regeneration method. The coefficient of performance can be enhanced by 100% with the energy recovery strategy. Capacitive deionization method also has advantages on the cost and maintenance, which makes it a promising choice for the absorption air-conditioning system.

Keywords: Air-conditioning; Membrane; Capacitive deionization; Performance (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261916303804
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:171:y:2016:i:c:p:405-414

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2016.03.060

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().