摘要
为了改善固液相变蓄能装置的空穴分布及传热性能,在理论研究基础上设计制造了填充泡沫镍的固液相变蓄热容器,与未填充泡沫镍的蓄热容器一同进行了相变蓄热实验,利用铂电阻(Pt100)和数据采集模块(ADAM-4000)测得了各蓄热容器的温度变化数据,实验后对各容器进行了CT(Computed Tomography)扫描,得到了容器内部的空穴分布图像.通过对比研究两种容器的温度变化和空穴分布,证明了填充泡沫镍能够有效改善固液相变过程中的空穴分布和传热性能,研究结论对于固液相变蓄热技术的应用具有一定指导意义.
To improve the void distribution and thermal performance of phase change thermal storage devices, thermal storage containers embedded with nickel foam cores were designed and manufactured based on the theoretical research. Phase change experiments were carried out with those containers, as well as containers without nickel foam, and the temperature variations of containers were tested and saved using platinum resistance thermocouples （Pt100） and data acquisition modules （ADAM-4000）. Void distributions of those containers were imaged by the computed tomography （CT） instrument after the experiments. The results of two kinds of containers were compared with each other, and the improvements of embedding nickel foam were testified both in void distribution and thermal performance of solid-liquid phase change process. The research findings could provide some values for the application of solid-liquid phase change thermal storage.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2009年第10期1197-1200,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目(50276001
50876004)
关键词
泡沫镍
空穴分布
固液相变
蓄热
nickel foam
void distribution
solid-liquid phase change
heat storage
