相变材料耦合热管传热性能分析  

Analysis of heat transfer performance of phase change materials coupled with heat pipe

作　　者：陈忱 孙俊俊 朱庆勇 CHEN Chen;SUN Jun-jun;ZHU Qing-yong

机构地区：[1]中山大学航空航天学院,广东广州510275

出　　处：《节能》2021年第11期36-40,共5页Energy Conservation

基　　金：教育部联合基金(项目编号:6141A02022533);国家自然科学基金(项目编号:12072383)。

摘　　要：将不同的相变材料(PCM)与热管结合,在热管绝热段耦合不同相变材料,分析不同工况下热管各部分的温度。与普通热管对比,得出相变材料耦合热管的传热性能。根据不同工作温度下的降温效率,分析相变温度对散热系统的影响。结果表明,相变材料耦合热管可以有效地降低热管温度,在被动散热的情况下蒸发段降温幅度可达22%;在有风机散热的情况下,降温幅度可达7.9%。由于相变材料具备蓄热能力与控温能力,在一定条件下,相变材料的蓄热量可达热源输入功率的34.1%,能够有效节省风机能耗。相变材料耦合热管系统的温差下降幅度可达32%,系统运行过程中,温度变化更平稳,可将加热峰值的热负荷转移至其他时刻缓慢释放。Different phase-change materials(PCM)are combined with heat pipe in the adiabatic section,and the temperature of each part of the heat pipe under various working conditions was analyzed.Compared with an ordinary heat pipe,the heat transfer performance of the heat pipe coupled with phase-change materials was obtained.According to the cooling efficiency under different working temperatures,the influence of phase transition temperature on the cooling system is analyzed.The results show that the phase change materials coupling heat pipe can effectively reduce the temperature.In the case of passive cooling,the temperature drop by 22%.In the case of fan cooling,the temperature drop by 7.9%.Because the phase change materials have the ability of heat storage and temperature control,under certain conditions the heat storage can be up to 34.1%of the heat input.It can effectively save energy consumption of fan.The temperature fluctuation of the system can be reduced by 32%.The temperature change of the system is more stable,and the heat load on the peak can be transferred to other times.

关 键 词：热管 相变材料 蓄热 电子器件散热 

分 类 号：TB34[一般工业技术—材料科学与工程]