西安交通大学2021年度基本科研业务费科研项目（自由探索与创新学生类）用于支持学校博士研究生在基础研究领域开展的自主选题探索性前沿研究，或在应用研究领域开展的以解决行业关键共性技术、社会重大问题等为目标的自主创新研究。团队博士生刘亦琳、秦思宇分别申报了关于“水蒸气在中空纤维膜内微观迁移机理及膜组件除湿性能研究”、“超薄蒸汽腔气液两相输运机理及传热性能研究”的科研项目并获得了资助。

The basic scientific research project (free exploration and innovation - students) of Xi'an Jiaotong University in 2021 is aimed at supporting doctoral students to carry out the exploratory frontier research with independent topics in the field of basic research, or the independent innovation research with the goal of solving the key generic technologies in the industry and major social problems in the field of applied research. Liu Yilin and Qin Siyu, doctoral students, received research funding for their research projects after expert evaluation.

科研项目——“水蒸气在中空纤维膜内微观迁移机理及膜组件除湿性能研究”以降低建筑运行阶段能耗为背景，探索新型低能耗空气除湿技术，将亲水膜分离技术与室内空气除湿过程相结合，开展水蒸气在中空纤维膜内微观迁移机理及膜除湿性能研究，解决传统表冷蒸发除湿和溶液除湿过程中空气品质差及能耗大等问题。

"Study on the mechanism of water vapor migration in hollow fiber membrane and the dehumidification performance of membrane component". In order to reduce the building operational energy consumption, the membrane-based separation technology is combined with the indoor air dehumidification process to explore a novel air dehumidification technology with low energy consumption. The mechanism of water vapor migration in hollow fiber membrane and the dehumidification performance of membrane component will be investigated. The project aims to solve the problems of poor air quality and high energy consumption in the traditional condensation-dehumidification and liquid desiccant dehumidification.

           图1 膜组件除湿过程                      图2 中空纤维复合膜分离水蒸气原理

科研项目——“超薄蒸汽腔气液两相输运机理及传热性能研究”以加快“新基建”5G布局为背景，围绕5G基站电子通讯设备对高热流密度冷却技术的迫切需求，针对相变散热元件趋向超薄化的发展态势，开展超薄蒸汽腔气液两相传热传质特性及强化性能研究。

“Research on vapor-liquid transportation mechanism and heat transfer performance of ultra-thin vapor chamber". Based on the background of accelerating the 5G layout of "new infrastructure", this research focuses on the urgent demand of 5G base station electronic communication equipment for high-heat-flux cooling technology. Aiming at the development trend of ultra-thin phase-change cooling elements, this study will make the research on vapor-liquid two-phase heat and mass transfer characteristics and enhanced performance of ultra-thin vapor chamber to help the development of electronic communication cooling technology.

 图3 蒸汽腔工作原理                                                                          图4 数值模拟及可视化实验分析参考

2021年度西安交通大学基本科研业务费科研项目（自由探索与创新学生类）拟资助项目：http://std.xjtu.edu.cn/info/1007/34970.htm