【摘要】 为提高热管散热器的散热效率,文中对平板热管散热器的散热翅片进行优化,提出一种在风冷条件下的非等长翅片散热器。首先通过研究环境温度、热源功率、风速对芯片温度的影响,当风速大于8 m/s时,通过增大风速对芯片的降温作用并不显著。然后通过对比等长翅片与非等长翅片的散热效率,提出非等长翅片中最长翅片与最短翅片差p的概念,p值分别取8.5 mm、17.0 mm、25.5 mm、34.0 mm进行仿真对比研究。当热源功率为600～1000 W,平板热管散热器翅片长度差在25 mm左右,散热效率最高;当热源功率为200～400 W,平板热管散热器翅片长度差在8.5 mm左右时,散热效率最高。结果表明,非等长翅片热管散热器优于等长翅片热管散热器的散热效率。更多还原

【Abstract】 In order to improve the heat dissipation efficiency of the heat pipe radiator, this paper optimizes the heat dissipation fins of the flat heat pipe radiator, and proposes a non-equal-length fin radiator under air-cooled conditions. By studying the impact of ambient temperature, heat source power, and wind speed on the chip temperature, when the wind speed is greater than 8 m/s, increasing the wind speed cannot significantly reduce the temperature of the chip. By comparing the heat dissipation efficiency of the equal-length fins and the non-equal-length fins, the concept p of the difference between the longest fin and the shortest fin in the non-equal fins is proposed, and the p values are taken as 8.5 mm,17.0 mm, 25.5 mm and 34 mm, respectively for simulation and comparative study. When the heat source power is 600～1000 W, the flat heat pipe radiator fin length difference is about 25 mm, the heat dissipation efficiency is the highest; when the heat source power is 200～400 W, the flat heat pipe radiator fin length difference is about 8.5 mm, the heat dissipation efficiency is the highest. The results prove that the heat dissipation efficiency of non-equal fin heat pipe radiator is better than that of equated fin heat pipe radiator.更多还原