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Bai, Hongyu; Chen, Ziwei; Xu, Haijia; Zhu, Jie (2016)
Languages: English
Types: Unknown
Subjects:
Liquid desiccant air dehumidification has become one of the most widely used dehumidification technologies with advantages of high efficiency, no liquid condensate droplets and capability of energy storage. In this paper a cross-flow mathematical model is developed for a single layer membrane unit. The governing equations are solved iteratively by finite difference method. The performance analysis is carried out for a small-scale membrane-based dehumidification module consisting of 8 air channels and 8 solution channels. The influences of main design parameters on system effectiveness are evaluated. These include air flow rate (NTU), solution to air mass flow rate ration (m*) and solution inlet temperature and concentration. It is revealed that higher sensible and latent effectiveness can be achieved with larger NTU and m*. Increasing solution concentration can also improve the dehumidification effect.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] Daou, K., Wang, R. & Xia, Z, Desiccant cooling air conditioning: a review. Renewable and Sustainable Energy Reviews 10, 55-77. 2006.
    • [2] Zhang, L. Z, Progress on heat and moisture recovery with membranes: From fundamentals to engineering applications. Energy Convers. Manag 63, 173-195. 2012.
    • [3] Mei, L and Dai, Y. J, A technical review on use of liquid-desiccant dehumidification for air-conditioning application, Renew. Sustain. Energy Rev 12, 662-689. 2008.
    • [4] Abdel-Salam, M. R. H., Ge, G.M., Fauchoux, M., Besant, R. W. & Simonson, C.J, State-of-the-art in liquid-to-air membrane energy exchangers (LAMEEs): A comprehensice review. Renewable and Sustainable Energy Reviews 39,700-728,2014.
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