International Journal of Thermal Sciences ( IF 4.5 ) Pub Date : 2021-07-23 , DOI: 10.1016/j.ijthermalsci.2021.107168 Y. Qu 1 , D. Zhou 2 , S. Qiao 1 , K. Zhou 1 , Y. Tian 3
To promote the thermal control and thermal modelling in complex heat applications with multiple heat sources, the startup performance experiments of dual-evaporator loop heat pipe (DE-LHP) with an eccentric evaporator-CC assembly were carried out under different working conditions. The effects of the vapor-liquid distribution, the interaction between evaporators, the heat load distribution, and the wick seal on the startup behavior of DE-LHP system were experimentally studied. At equal heat load distribution of two evaporators, the DE-LHP has the optimal startup performance when the vapor grooves contained vapor and the evaporator core was filled with liquid. The most favorable and unfavorable vapor-liquid distributions of DE-LHP were the same as those of the traditional single evaporator LHP. Two special startup modes of DE-LHP were investigated when the vapor grooves and evaporator core were filled with liquid. The results showed that the vapor-liquid distribution of the vapor line between two evaporators has an important influence on the formation of the two start-up modes. The application of sealing rings can reduce the startup time by 23 min and reduce both operating and startup temperatures of CC.
中文翻译:
双蒸发器回路热管启动性能试验研究
为了促进具有多个热源的复杂热应用中的热控制和热建模,在不同的工作条件下进行了带有偏心蒸发器-CC 组件的双蒸发器回路热管 (DE-LHP) 的启动性能实验。实验研究了汽液分布、蒸发器之间的相互作用、热负荷分布和油芯密封对 DE-LHP 系统启动行为的影响。在两台蒸发器热负荷分布相等的情况下,DE-LHP在蒸汽槽内有蒸汽且蒸发器芯部充满液体时具有最佳启动性能。DE-LHP 最有利和最不利的汽液分布与传统的单蒸发器 LHP 相同。当蒸汽槽和蒸发器芯充满液体时,研究了 DE-LHP 的两种特殊启动模式。结果表明,两个蒸发器之间的蒸汽管线的汽液分布对两种启动模式的形成有重要影响。密封圈的应用可将启动时间缩短 23 分钟,并降低 CC 的运行和启动温度。