摘要
通过实验对相变复合材料的相变过程进行研究,将相变材料正十八烷(C18)分别填充到泡沫铜和泡沫碳中来提高相变材料的导热性能,采用差示扫描量热法(DSC)分析了正十八烷相变材料的热物性。利用相变蓄热装置对三种不同材料(C18、C18/泡沫碳、C18/泡沫铜)进行蓄放热对比实验,记录温度测试数据,分析这三种不同材料的温控性能与蓄热能力,并与正十八烷的结果对比。结果表明:泡沫材料的填充大幅提高相变材料的温控性能,使蓄热装置温度分布更均匀。
The experimental investigation on the phase change processes had been carried out. N-octadecane （C18） was used as latent heat storage phase change material （PCM） , in which copper foams and carbon foams were embedded to enhance the heat transfer. The thermal properties of C18 were measured by differential scanning calorimetry（DSC）. An experimental investigation on three thermal storage units （TSUs） with different kinds of materials filling state （C18, C18/carbon foam, C18/copper foam） bad been carried out. The temperature data of TSUs had been recorded and analyzed. Compared to the results of pure C18 TSU, the effect of the foam materials on phase change heat transfer was very significant and made the temperature distribution more uniform.
出处
《制冷学报》
CAS
CSCD
北大核心
2016年第6期61-65,共5页
Journal of Refrigeration
基金
国家自然科学基金(50876004)资助项目~~
关键词
蓄热
相变
潜热
正十八烷
泡沫碳
thermal storage
phase change
latent heat
n-octadecane
carbon foam
