平行轴旋转热管传热性能的实验  

Heat transfer performance of!heat pipe rotating about parallel axes

作　　者：何川[1] 赵荣杭[1] 郑军[2] 

机构地区：[1]重庆大学动力工程学院,重庆400030 [2]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2008年第6期632-636,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(59905024)

摘　　要：对一种平行轴旋转热管的传热性能进行了实验研究。热管的冷却段采用无接触热阻的整体针翅制作。实验的充液率范围为10％～25％，热流密度为7×10^3～5．3×10^4W／m^2 、冷却风由热管自身旋转形成，其雷诺数范围为2．3×10^3～1．2×10^4。实验结果表明充液量为20％时热管的传热性能最好，其传热能力随转速的增加逐渐增强，加热功率的变化对热管的传热性能影响不大。实验发现，吸液芯对于该型热管的传热性能作用不大。在相同条件下，该平行轴旋转热管的传热性能可达到同心轴旋转热管的1．5倍。We conducted an experimental study of heat pipe rotating about parallel axes. The entire pin-fin of non-contact thermal resistance was used in the cooling section of the heat pipes. The experimental liquid- filled volume range from 10% to 25 %, and heat flux density range was 7 × 10^3 W/m^2 to 5.3 × 10^4 W/m^2. A cooling current of air was formed by the heat pipe rotation. The Reynolds number range was 2.3 × 10^3 to 1.2 × 10^4. The experimental results indicate that the heat transfer performance of the heat pipe was the best when liquid-filled volume reached 20%. The heat transfer capability strengthened gradually along with the increasing rotational speed. The change of the heat power had little impact on the heat transfer performance of the heat pipe. It was found that the absorption liquid core was of little use to the heat transfer performance of the heat pipe. Under the same conditions, the heat transfer performance of the parallel rotating heat pipe was 1.5 times that of co-axial rotating heat pipe.

关 键 词：旋转 热管 强化传热 

分 类 号：TK17[动力工程及工程热物理—热能工程]