Thermal Properties and Reliability of a Lauric Acid/Nonanoic Acid Binary Mixture as a Phase‐Change Material for Thermal Energy Storage
Thermal Properties and Reliability of a Lauric Acid/Nonanoic Acid Binary Mixture as a Phase‐Change Material for Thermal Energy Storage
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DOI：
10.1002/ente.201700349
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发表时间：
2017-12
影响因子：
3.8
通讯作者：
Zhao Wang;Jinhe Sun;Xie Shaolei;Guixiang Ma;Yongzhong Jia
中科院分区：
文献类型：
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作者：
Zhao Wang;Jinhe Sun;Xie Shaolei;Guixiang Ma;Yongzhong Jia
研究了月桂酸（LA）和壬酸（NA）组成的二元体系的热性质及其二元相图。将该二元体系应用于实际，选择了LA质量分数为96%的混合物，其相变温度为41 ℃，相变潜热为163 J g-1，适合于家用热水应用。采用热重分析仪（TGA）、傅立叶变换红外（FT-IR）光谱仪、热导仪（TCA）、T-历史法和1000次熔融/冷冻加速热循环试验，研究了其热稳定性、化学结构稳定性、热导率、过冷度和热可靠性。试验结果表明，该混合料具有显著的热稳定性，良好的化学结构稳定性，无过冷，热可靠性好。因此，该混合物可以是用于热能存储的潜在PCM。
The thermal properties of the binary system composed of lauric acid (LA) and nonanoic acid (NA) and its binary phase diagram were studied. To put this binary system into practice, the mixture with 96wt% of LA was selected, and it has a phase change temperature of 41oC and a latent heat of 163 J g-1, which is suitable for domestic water heating application. Besides, its thermal and chemical structure stability, thermal conductivity, degree of supercooling and thermal reliability were investigated by thermogravimetric analyzer (TGA), fourier transform infrared (FT-IR) spectrophotometer, thermal conductivity apparatus (TCA), T-history method and accelerated thermal cycle test for 1000 melt/freeze cycles, separately. The results of above tests indicated that the mixture has a remarkable thermal stability, a good chemical structure stability, no supercooling and an excellent thermal reliability. Therefore, the mixture can be a potential PCM used for thermal energy storage.