Condensation heat transfer characteristics and concept of sub-flooding limit in a two-phase closed thermosyphon |
| |
| Affiliation: | 1. Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;2. Beijing Key Laboratory of Heat Transfer and Energy Conversion, Tsinghua University, Beijing 100084, China;1. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran;2. Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;3. Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran;1. Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, College Green, Dublin 2, Ireland;2. CNRS, SIMAP, Univ. Grenoble Alpes, Grenoble F-38000, France |
| |
| Abstract: | ![]()
A condensation model is developed for a two-phase closed thermosyphon by considering the interfacial shear due to mass transfer and interfacial velocity. The model predictions differ substantially from Nusselt's solutions, showing the significance of the interfacial shear on the condensation inside the thermosyphon. It is found that the condensation heat transfer is greatly affected by two controlling parameters—the relative velocity ratio B and the momentum transfer factor U. The sub-flooding limit, which is different from the conventional flooding limit, is proposed to capture the interaction between the condensation and evaporation in the thermosyphon, based on which the critical aspect ratio (radius/length) can be determined to prevent the thermosyphon from heat transfer deterioration. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
