摘要
本文讨论了平板式回路热管在三种不同情况下启动的温度分布,发现回路热管在平放且内部的汽液分布与正常运行时相同的情况最容易启动。讨论了不同功率下回路热管正常运行后的震荡性,发现回路热管随加热功率的增大出现了三次温度相对稳定与振荡的交替。在最大功率下的震荡可能是由于蒸发器底部到补偿室的热泄漏增大而导致。讨论了回路热管在相对稳定运行时的传热特性,发现当倾斜角为90°时,180 W的加热功率对应的蒸发器底部为79℃,此时回路的热阻为0.26 K/W。
This paper presents the results of the start-up of flatten loop heat pipe in three different situations.It indicates the loop heat pipe can start-up easiest when the loop heat pipe is in horizontal orientation and the vapor-liquid distribution is similar as in normal running.The instability of loop heat pipe in normal running also has been discussed,and it is found the steady and oscillation occurs alternately three times during the process of increasing heat load.The instability in high heat load may be caused by the increasing heat leak from the evaporator to the compensation chamber.When the loop heat pipe running at a relatively steady state with orientation of 90°,it can transfer above 180 watts heat with thermal resistances of 0.26 K/W and T_(evap) is about 79℃.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第z1期229-232,共4页
Journal of Engineering Thermophysics
基金
广州市科技攻关重点资助项目(No.2006Z1-D0031)
关键词
平板式两相回路热管
热启动特性
实验研究
flatten loop heat pipe
start-up characteristics
experimental study
