Study on performance of colloidal mixtures consisted of stearic acid and Na2HPO4·12H2O for use as phase change materials of thermal energy storage
Study on performance of colloidal mixtures consisted of stearic acid and Na2HPO4·12H2O for use as phase change materials of thermal energy storage
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DOI：
10.1016/j.enconman.2010.01.021
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发表时间：
2010-07
影响因子：
10.4
通讯作者：
Zhiwei Tang;Aijie Liu;Zhifeng Chen
中科院分区：
文献类型：
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作者：
Zhiwei Tang;Aijie Liu;Zhifeng Chen
采用傅里叶变换红外光谱（FTIR）和差示扫描量热法（DSC）研究了硬脂酸与Na{sub 2}PO{sub 4}. 12 H {sub 2}O组成的混合相变材料的储热性能和相变稳定性。还通过实验测定了混合材料的比热容。结果表明，硬脂酸与Na{sub 2}PO{sub 4}. 12 H {sub 2}O组成的晶体材料具有良好的相变稳定性和化学相容性。因此，可以解决由Na{sub 2}PO{sub 4}.H{sub 2}O的过冷和硬脂酸的低比热容引起的缺点，推测对于混合物的这两种组分材料，在有机/无机特性本身的基础上进行互补。
The thermal energy storage performance and phase change stability of mix phase change materials consisted of stearic acid and Na{sub 2}PO{sub 4}.12H{sub 2}O are studied by means of Fourier transformation infrared spectrum analyses (FTIR) and Differential Scanning Calorimetry (DSC). The specific heat capacity of mix materials is also determined experimentally. The results show that all absorption peaks of functional groups and chemical bonds of stearic acid still exist, which suggests that these crystal materials composed of stearic acid and Na{sub 2}PO{sub 4}.12H{sub 2}O have good phase change stability and chemical compatibility. Thus, disadvantages caused by the subcooling of Na{sub 2}PO{sub 4}.H{sub 2}O and the low specific heat capacity of stearic acid can be solved, it is speculated that complement each other on the basis of organic/inorganic characteristics in itself is carried out for these two component materials of the mixture.