论文部分内容阅读
通过在航天器热控系统用的某型液体传热工质中添加铜纳米粒子 ,研制一种新型航天用传热冷却工质 -纳米流体 ;分别运用瞬态热线法和 NXE- 1型粘度计测定了不同纳米粒子体积份额配比的纳米流体的导热系数和粘度 ,分析了纳米粒子体积份额、温度等因素对纳米流体导热系数和粘度的影响 ,实验结果表明 ,在液体中添加纳米粒子 ,显著增加了液体的导热系数和传热性能。
Through the addition of copper nanoparticles to a certain type of liquid heat transfer medium used in the spacecraft thermal control system, a new type of heat and cooling fluid for aerospace applications, nanofluid, was developed. The transient hot-wire method and the NXE-1 viscometer The thermal conductivity and viscosity of the nanofluids with different volume fractions of different nanoparticles were determined. The effects of the volume fraction and temperature of the nanoparticles on the thermal conductivity and viscosity of the nanofluids were also investigated. The experimental results show that the addition of nanoparticles in the liquid is significant Increased liquid thermal conductivity and heat transfer performance.