摘要
利用石蜡的相变储热特性,制成了一种相变温控装置,来实现对电子器件的过热保护.通过模拟实验测试了这种相变温控装置的温控效果,并对比分析了相变材料用量和热流密度对温控效果的影响.结果表明:在1000～3000W/m2的热流密度下,石蜡体积含量为72%的PTCC可以确保至少在939～7500s内将发热器件表面温度控制在低于70℃的状态,基本可以满足一些电子设备的温控要求.
A Phase-change thermal control composites(PTCC) filled with the phase change material of paraffin was presented,which is used to protect electronic devices from high temperature.The thermal control effectiveness of PTCC for electronic devices was tested by simulate experiment.The effect of the heat flux and the content of paraffin are also analyzed contrastively.The results showed that,the surface temperature of electronic devices could be under 70℃ during 939~7 500 s,while the content of paraffin in volume...
出处
《电子器件》
CAS
2007年第5期1939-1942,共4页
Chinese Journal of Electron Devices
关键词
热管理
相变温控
相变材料
电子设备
thermal management
phase-change thermal control
phase-change material
electronic device
