摘要
平板式热管是一种广泛采用的电子元件散热设备。本文对平板热管的热性能进行了实验研究,用加热电阻来模拟电子设备发热元件,采用热电偶来测量热管表面的温度。对电子设备散热用平板热管的起动响应时间,一定工况下的平板热管温度分布、温度均匀性和传热效果进行了实验研究,并与相同工况的平直肋片固体散热块进行了试验对比,证明平板式热管具有重量轻、起动快、传热效率高,均温性能好等优点。但在低功率时,平板热管的散热性能差于散热块。同时,考察了重力对不同方向热管传热性能的影响,认为具有吸液芯的平板热管可推广运用于航空机载电子设备散热。
Flat-plate heat pipe is widely used in cooling electronic equipment. An experimental investigation of the thermal performance of flat-plate heat pipe is conducted. The heating resistor is treated as an electronic equipment. The surface temperature is measured by the thermocouples. A serious of experiments including start-up time, temperature distributing, temperature equality and thermal performance are carried out in the flat heat pipe. Meanwhile, the similar experiments are also made for the solid flat- plate ventilated rib with the same size and the material. The result shows that the flat heat pipe has advantages of quicker start-up, less temperature difference and better heat transfer. However, the heat transfer performance of the heat pipe is not good at the low heat flux. The gravitation of the differential orientation on the thermo property is studied and is used in eliminating heat of the aviation field.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2008年第5期627-631,共5页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
平板式热管
电子设备
散热
实验研究
flat-plate heat pipe
electronic equipment
cooling
experimental investigation
