摘要
为了研究开式二相热虹吸管的传热特性,对其内部流动进行了理论分析,推导出了影响其工作极限———阻流现象的判据。在实验基础上建立了考虑开式二相热虹吸管倾角、开孔数、孔径及热流密度等影响的当量传热系数的经验公式。对比实验表明:开式热管的当量传热系数为闭式热管的85%以上,总传热量为相同工况下闭式二相热虹吸管的90%以上,而成本只有其50%左右。
In order to study the heat transfer characteristics of the two-phase thermosyphon,its internal flow was analysed theoretically, a criterion affecting its working limit was deduced. By studying the heat transfer characteristics through experiments, an experiential formula of the equivalent heat transfer coefficient was established including the influences of the inclination, the hole number, the hole diameter and the heat flux density. Contrast experiments showed that the equivalent heat transfer coefficient of the open thermosyphon is above 85% of that of the closed one, and its total heat transfer quantity is above 90% of that of the closed one under the same working condition, but its cost is only about 50% of that of the closed thermosyphon.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第4期368-372,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
吉林省科技发展计划项目(20020422)
关键词
热工学
开式二相热虹吸管
传热特性
余热回收
thermal engineering
open two-phase thermosyphon
heat transfer characteristics
waste heat recovery
