摘要
对电磁驱动液态金属热控系统进行了分析,与水工质回路的传热特性比较表明:在进行高功率密度器件散热方面,液态金属换热性能明显优于水等常规工质,在较小的流速下,可以保持较低的器件表面温度;更为重要的是,它可以采用无运动部件电磁泵驱动,具有可靠性高、振动噪声小、结构简单紧凑、功耗小、可控性强等优点。该系统不仅可解决空间高热流密度器件散热难题,而且在微小卫星、月球/行星表面探测器等主动热控制方面也有重要的应用前景。
An electromagnetically pumped liquid metal thermal control system is analyzed in this article. Comparison with that of water shows that the heat transfer performance of liquid metal is significantly better than that of water. Under low flow velocity conditions, liquid metal can achieve quite low device temperature rising. Furthermore, by adopting an electromagnetic pump without moving parts, it shows advantages of high reliability, low vibration and noise, simple and compact structure, strong controllability, etc. It has potential application in high power density components cooling and small satellites and lunar/planet surface rovers＇ thermal control.
出处
《航天器工程》
2008年第4期41-45,共5页
Spacecraft Engineering
关键词
航天器
热控电磁泵
液态金属
高功率密度
spacecratf
electromagnetic pump
liquid metal
high power density
