Study on the Heat Conduction of Phase-Change Material Microcapsules  

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

机构地区：[1]Dept. of Pharmacology, General Hospital of Beijing Military Command, Chinese People's Liberation Army, CN [2]95824 Troop of Chinese People's Liberation Army, CN [3]Institute of Engineering Thermophysics, Chinese Academy of Sciences

出　　处：《Journal of Thermal Science》2013年第3期257-260,共4页热科学学报（英文版）

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

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.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.

关 键 词：3ω-method  EFFECTIVE THERMAL conductivity  PHASE-CHANGE MATERIAL MICROCAPSULES 

分 类 号：TK124[动力工程及工程热物理—工程热物理]