Experimental research on wetting behavior of refrigerant–oil mixture on micro/nanostructured surface
Experimental research on wetting behavior of refrigerant–oil mixture on micro/nanostructured surface
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DOI：
10.1016/j.ijrefrig.2015.10.033
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发表时间：
2016-02
期刊：
影响因子：
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通讯作者：
Hao Peng;Lingnan Lin;G. Ding
中科院分区：
文献类型：
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作者：
Hao Peng;Lingnan Lin;G. Ding
微/纳米结构表面的润湿性是其应用于强化制冷剂-油混合物沸腾换热的关键特性。本研究的目的是实验研究制冷剂-油混合物在微/纳米结构表面上的润湿行为。制备了普通铜表面（PS）、微/纳米结构表面（MNS）和含氟自组装膜微/纳米结构表面（MNFS）3种表面，研究了纯R141 b以及不同含油量的R141 b-NM 56混合物在3种表面上的润湿行为。实验结果表明：在MNS和PS上，制冷剂-油混合物润湿时形成了突起液膜，而在MNFS上不存在; F-SAM或经F-SAM修饰的微/纳米结构的存在降低了表面润湿性，而微/纳米结构的存在增加了表面润湿性;油增加了制冷剂在MNS上的润湿性，但降低了制冷剂在MNFS上的润湿性。
The wettability of micro/nanostructured surface is a key property for its application in enhancing the boiling heat transfer of refrigerant–oil mixture. The objective of this research is to experimentally investigate the wetting behavior of refrigerant–oil mixture on micro/nanostructured surface. Three types of surfaces including plain copper surface (PS), micro/nanostructured surface (MNS) and micro/nanostructured surface with fluorinated self-assembled monolayer (MNFS) were fabricated; and the wetting behavior of pure R141b as well as R141b-NM56 mixtures with different oil concentrations on three types of surfaces was measured. The experimental results show that the protuberant liquid film is formed during the wetting of refrigerant–oil mixture on MNS or PS, but does not exist on MNFS; the presence of F-SAM or micro/nanostructure modified by F-SAM reduces the surface wettability, while the presence of micro/nanostructure increases the surface wettability; oil increases the wettability of refrigerant on MNS, while it reduces the wettability of refrigerant on MNFS.