微槽道式热管模块散热特性实验研究  

Experimental study on heat dissipation characteristics of micro-channel heat pipe module

作　　者：蒋昊辰 张亚平[1] 郝昊昊 Jiang Haochen;Zhang Yaping;Hao Haohao(Colege of Energy Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学能源学院,西安710054

出　　处：《低温与超导》2022年第9期54-58,64,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(51504188)资助。

摘　　要：为解决大功率集成电路热点集中问题,设计了一种与针肋散热器一体化集成的微槽道式热管模块,分别改变了风速、散热器肋片尺寸、热源功率及热管表面温度均匀性,探究了该模块的散热特性。实验结果表明,在该实验工况下,散热器肋高20 mm时模块热扩散性能最佳,温度变化速率高出对照实验组约4℃/min;随着热流密度增加,热管能快速启动运行,该热管模块可正常运行的最大热流密度达到4.8 W/cm^(2),热管蒸发端与冷凝端最大温差达22℃,热管冷凝面端温差在3℃以内。表明该微槽道式热管模块能够最大限度避免基板的热应力集中,有效提高电路器件抵抗局部热冲击的性能,保证电路功率模块的高效平稳运行。In order to solve the problem of hot spot concentration in high-power integrated circuit, a micro-channel heat pipe module with integrated pin-fin radiator was designed. By changing the wind speed, the size of the heat sink, the power of heat source and the uniformity of the surface temperature of the heat pipe, the heat dissipation characteristics of the module were studied. The experimental results show that under the experimental conditions, when the height of the fins is 20 mm and the temperature change rate is about 4 ℃/min higher than that of the control group, the heat dissipation performance of the module is the best. With the increase of heat flux, the heat pipe can start quickly. The maximum heat flux density of the heat pipe module can reach 4.8 W/cm^(2), the maximum temperature difference between the evaporation and condensation of the heat pipe is 22 ℃, and the temperature difference between the condensation end of the heat pipe is less than 3 ℃. The experimental results show that the micro-channel heat pipe module can avoid the thermal stress concentration of the substrate to the maximum extent, effectively improve the resistance of the circuit components to local thermal shock performance.The circuit power module can operate efficiently and smoothly.

关 键 词：平板热管 微型槽道 散热特性 热源功率 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]