Experimental and Computational Multiphase Flow

, Volume 2, Issue 4, pp 187–198 | Cite as

Falling film liquid desiccant air dehumidification

  • Chuanshuai DongEmail author
  • Takashi Hibiki
  • Lizhi Zhang
  • Lin Lu
Review Article


Falling film liquid desiccant dehumidification technology is attracting more and more attention due to lower energy consumption, less pollution, and more flexible humidity control in recent years. This paper conducts a comprehensive review on falling film liquid desiccant dehumidification systems. Firstly, the working principles and features of the liquid desiccant dehumidification are introduced to describe the dehumidification process. The existing liquid desiccants including organic and inorganic desiccants are reviewed. Then, the structures of falling film dehumidifiers including both adiabatic dehumidifiers and internally-cooled dehumidifiers are described. Besides, the simulation models of falling film dehumidifiers, such as finite difference models, effectiveness NTU (ε-NTU) models and simplified simulation models are summarized. Finally, the exiting performance enhancing methods of falling film dehumidifiers are collected, which provide valuable guidance to researchers and engineers to improve the dehumidification performance.


falling film liquid desiccant dehumidification dehumidification performance energy consumption 


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Copyright information

© Tsinghua University Press 2019

Authors and Affiliations

  • Chuanshuai Dong
    • 1
    Email author
  • Takashi Hibiki
    • 2
  • Lizhi Zhang
    • 1
  • Lin Lu
    • 3
  1. 1.Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouChina
  2. 2.School of Nuclear EngineeringPurdue UniversityWest LafayetteUSA
  3. 3.Renewable Energy Research Group, Department of Building Services EngineeringThe Hong Kong Polytechnic UniversityKowloon, Hong Kong SARChina

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