一种新型相变散热器设计  

Design of a New Type Phase-change Radiator

作　　者：李如忠[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《电子机械工程》2013年第4期37-39,共3页Electro-Mechanical Engineering

摘　　要：对于短时或间歇性工作的大功率电子设备,特别是工作在临近空间的电子设备,利用相变材料进行散热是一种比较有效的冷却方式。但常用的相变材料导热系数比较低,必须采取各种措施强化相变材料的导热性能。文中在分析相变散热器中强化传热措施的基础上,针对小型轻量相变散热器的设计要求,设计了一种易于加工的内嵌螺旋形翅片的相变散热器。通过对散热器进行简化,计算了翅片间距。加热实验证明,所设计的新型相变散热器能很好地满足设计要求,螺旋形翅片能明显增强相变材料的导热性能,改善相变散热器的内部温度均匀性。For the high power electronic devices for short time or intermittent work, especially the electronic equipment working near space, heat dissipation by phase-change materials is a kind of more effective cooling way. But because the thermal conductivity of the commonly used phase-change materials is low, various measures must be taken to improve the thermal conductivity of phase-change materials. Based on analysis of heat transfer enhancement measures of the phase-change radiator, a new type phase-change radiator embedded in spi- ral fins is designed and the space between fins is calculated. The experiment results indicate that the new type phase-change radiator can well meet the design requirements. The spiral fin can significantly enhance the thermal conductivity of phase-change materials and improve the temperature uniformity in the phase-change radiator.

关 键 词：相变散热器 螺旋形翅片 强化传热 

分 类 号：TK414.2[动力工程及工程热物理—动力机械及工程]