Thermal properties and thermal conductivity enhancement of composite phase change materials using myristyl alcohol/metal foam for solar thermal storage
Thermal properties and thermal conductivity enhancement of composite phase change materials using myristyl alcohol/metal foam for solar thermal storage
复制标题
用于太阳能储热的肉豆蔻醇/金属泡沫复合相变材料的热性能和导热系数增强
DOI：
10.1016/j.solmat.2017.05.059
复制
发表时间：
2017-10-01
影响因子：
6.9
通讯作者：
Fang, Guiyin
中科院分区：
文献类型：
--
作者：
Huang, Xiang;Lin, Yaxue;Fang, Guiyin
采用真空熔渗法制备了肉豆蔻醇/泡沫金属复合相变材料。以MA为相变材料，泡沫金属为骨架。采用泡沫镍和泡沫铜进行比较。分析了泡沫金属孔径大小对热性能的影响。研究并记录了热性能，包括差示扫描量热仪（DSC）测试结果和热重分析仪（TGA）结果。与纯MA相比，CPCM的熔化潜热降低了3 - 29%。TGA结果表明，复合材料具有良好的热稳定性。用傅里叶变换红外光谱（FT-IR）和X射线衍射仪（XRD）分别测定了复合材料的化学结构和晶体结构。利用扫描电镜（SEM）分析了复合材料的微观结构，结果表明，泡沫金属对相变材料有很好的吸附作用。用导热仪（TCM）测试了复合材料的导热性能，结果表明MA/泡沫金属复合材料具有较好的导热性能。
Myristyl alcohol (MA)/metal foam composite phase change materials (CPCMs) were fabricated by vacuum melting infiltration. MA was used as the phase change material (PCM) and the metal foam was used as skeleton. Nickel foam and copper foam were both employed for comparison. Furthermore, effects of pore size of metal foam on thermal performances were analyzed. Thermal properties, including differential scanning calorimeter (DSC) test results and thermogravimetry analyzer results (TGA) were investigated and recorded. Compared with latent heat of pure MA, the latent heat of CPCMs for the melting process decreased by 3-29%. TGA results showed that the composites have good thermal stability. Fourier transformation infrared spectroscope (FT-IR) and X-ray diffractometer (XRD) were used to determine chemical and crystalloid structure of the composites, respectively. Microstructures of the composites were analyzed by scanning electron microscope (SEM), and the results indicated that the PCM was well absorbed by the metal foam. Thermal conductivity of the composites was measured by thermal conductivity meter (TCM), and the outcome proved that MA/metal foam composites have an improved thermal conductivity.