解决或缓解低温传热表面的结露和结霜问题是当前低温传热、制冷领域亟待开展的重点课题之一，其多科学交叉的关键科学问题是研究难点。本项目拟通过超亲水颗粒的掺合作用来调控具有冷凝露滴“合并弹跳”效应的超疏水涂层的润湿性，从材料织构探究涂层表面润湿性的调控机制；阐明不同润湿性涂层表面结露、结霜和融霜特性，建立表面的露滴运动模型、霜晶生长模型和融霜迁移模型；探究不同润湿性涂层表面低温传热的影响规律，揭示润湿性-凝结特性-低温传热特性的协同关系，建立不同润湿性涂层表面的低温传热模型，获得与超亲水颗粒的特征参数和掺量相关的低温传热增强阈值。项目的研究为可控润湿性表面在低温传热器件上的应用提供科学依据和技术支持，对推进纳米技术在传热、制冷领域的应用基础研究具有重要意义。

It is current one of the urgent important subjects to solve or alleviate dew and frost behaviors on low temperature heat transfer surface in low temperature heat transfer and refrigeration fields. Its multidisciplinary key scientific problem is research difficulty. In this project, to explore the controllable mechanism of surface wettability by the material texture, the wettability of the superhydrophobic coating with condensation drops “merge-jumping” effect will be controlled by blending of superhydrophilic particles. Dewdrops motion, frost crystal growth and defrost migration models were structured by analyses of the dewing, frosting and defrosting characteristics on the various wettability coatings. Through exploration of the influence rule of low temperature heat transfer on the various wettability coatings, we reveal the synergetic relationship of wettability-condensation characteristic-low temperature heat transfer characteristics, build low temperature heat transfer model, and obtain low temperature heat transfer enhancement threshold which associated with characteristic parameters and dosage of superhydrophilic particles. The results can not only provide science basis and technical support for application of the various wettability coatings on low temperature heat transfer device, but also lay the foundation to advance the adhibition of nanotechnology in the heat transfer and refrigeration fields.