关键词: 两相闭式热虹吸管, 强化传热, 传热能力, 换热系数

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