Study on the Heat Conduction of Phase-Change Material Microcapsules

作     者：Gangtao Zhao Xiaohui Xu Lin Qiu Xinghua Zheng Dawei Tang 

作者机构：Dept. of Pharmacology General Hospital of Beijing Military Command Chinese People's Liberation Army CN 95824 Troop of Chinese People's Liberation Army CN Institute of Engineering Thermophysics Chinese Academy of Sciences 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2013年第22卷第3期

页      面：257-260页

核心收录：

学科分类：080701[工学-工程热物理] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：The financial supports provided by National Basic Research Program of China (Grant No.2012CB933200) National Natural Science Foundation of China (Grant No. 51106151) are gratefully acknowledged provided by State Key Laboratory of Polymer Physics and Chemistry,Institute of Chemistry, Chinese Academy of Sciences 

主　　题：3ω-method, Effective thermal conductivity, Phase-change material microcapsules 

摘      要：The 3ω approach was used to measure the effective thermal conductivity of phase-change material microcapsules (PCMMs) based on urea formaldehyde and sliced paraffin. The effective thermal conductivities of PCMMs with different densities were measured within the phase-change temperature range. The relationships between effective thermal conductivity, density and temperature were analysed. The effective thermal conductivity reached peak values within the phase-change temperature range and the temperature peak value was consistent with the peak value of the phase-change temperature. The effective thermal conductivity increased with increasing density due to the decreased porosity of samples and their increased solid-phase conduction.