Abstract: This paper reviewed the current research of heat transfer enhancement technologies on the two-phase closed thermosyphon. Heat transfer enhancement technologies were classified into highly efficient working fluid application，inner surface treatment，pipe inserted into the thermosyphon，and other methods. The heat transfer enhancement mechanism of these technologies was analyzed. The result indicates that most technologies stay in the experimental level and lack the theoretical research. And they have not obtained any widespread industrial application yet. Theoretical study，research of the effect of parameters on the heat transfer performance，how to reduce the production costs of industrial application will be the hot research topics of heat transfer enhancement technologies with thermosyphon in the future.

Key words: two-phase closed thermosyphon, heat transfer enhancement, heat transfer capability, heat transfer coefficient

摘要： 回顾了两相闭式热虹吸管强化传热技术研究现状，将热虹吸管强化传热技术归纳分为4类，即采用高效工作介质、管壁内表面处理、管内设置内插件和其它类。分别阐述了这4种技术的强化传热机理，总结得出大部分技术多局限在实验分析层面上，缺乏理论上的深入分析，暂时没有得到工业生产的大规模应用。并指出了强化传热技术的理论研究、各种参数对传热性能的影响探究以及如何降低工业应用的生产成本将是今后热虹吸管强化传热技术的研究热点。

关键词: 两相闭式热虹吸管, 强化传热, 传热能力, 换热系数