A review on wetting and water condensation - Perspectives for CO2 condensation

• Published in: Advances in colloid and interface science Vol. 256; pp. 291 - 304
• Main Authors: Snustad, Ingrid, Røe, Ingeborg T, Brunsvold, Amy, Ervik, Åsmund, He, Jianying, Zhang, Zhiliang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-06-2018
• Subjects: CCS; Dropwise condensation; Nanostructured surfaces; Superhydrophobicity; Superomniphobicity; CCS; Superhydrophobicity; Nanostructured surfaces; Dropwise condensation; Superomniphobicity
• ISSN: 0001-8686; 1873-3727
• DOI: 10.1016/j.cis.2018.03.008

Liquefaction of vapor is a necessary, but energy intensive step in several important process industries. This review identifies possible materials and surface structures for promoting dropwise condensation, known to increase efficiency of condensation heat transfer. Research on superhydrophobic and superomniphobic surfaces promoting dropwise condensation constitutes the basis of the review. In extension of this, knowledge is extrapolated to condensation of CO2. Global emissions of CO2 need to be minimized in order to reduce global warming, and liquefaction of CO2 is a necessary step in some carbon capture, transport and storage (CCS) technologies. The review is divided into three main parts: 1) An overview of recent research on superhydrophobicity and promotion of dropwise condensation of water, 2) An overview of recent research on superomniphobicity and dropwise condensation of low surface tension substances, and 3) Suggested materials and surface structures for dropwise CO2 condensation based on the two first parts.
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•A thorough and comprehensive review of wetting properties and parameters•Assessment of design criteria for superhydrophobic surfaces•Impact of nanoscale roughness on wetting•Knowledge from water extracted to understand dropwise condensation of low surface tension liquids