Study on preparation and thermal property of binary fatty acid and the binary fatty acids/diatomite composite phase change materials

被引：184

作者：

Li, Min ^{[1
,2
]}

Kao, Hongtao ^{[3
]}

Wu, Zhishen ^{[2
]}

Tan, Jinmiao ^{[1
]}

机构：

[1] Southeast Univ, Coll Mat Sci & Engn, Jiangsu Key Lab Construct Mat, Nanjing 211189, Peoples R China

[2] Southeast Univ, Int Inst Urban Syst Engn, Nanjing 211189, Peoples R China

[3] Nanjing Univ Technol, Nanjing 210009, Peoples R China

来源：

APPLIED ENERGY | 2011年 / 88卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Fatty acid; Phase change materials; Diatomite; Phase diagram; ENERGY-STORAGE; EUTECTIC MIXTURES;

D O I：

10.1016/j.apenergy.2010.11.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This study prepared a series of binary phase change materials by mixing decanoic acid, dodecanoic acid, hexadecanoic acid and octadecanoic acid each other. The phase-transition temperature of binary fatty acid and its corresponding mixing proportion are calculated with phase diagram thermodynamic method. The results are verified by the experimental result of the heat absorption curve and the Differential Scanning Calorimetry (DSC) analysis curve. The results show that the calculation method of phase diagram thermodynamic calculation can be taken as a basis for mixing proportion of binary fatty acid phase change materials. In addition, the decanoic-dodecanoic acid/diatomite composite phase change material (PCM) are prepared and its microstructure. thermal property and thermal reliability are characterized. The result shows that the decanoic-dodecanoic acid is uniformly adsorbed into diatomite and the form-stable PCM are formed. The phase-transition temperature and the latent heat of the decanoic-dodecanoic acid/diatomite composite PCMs is 16.74 degrees C and 66.8114 J/g, respectively. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1606 / 1612

页数：7

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