摘要
相变储热是提高能源利用效率和保护环境的重要技术,而常用的有机相变储热材料导热系数低,从而影响了整个系统的能效。对近年来国内外在提高相变材料传热性能方面的研究进行了归纳,分析了4种主要的强化方法:相变材料吸附到多孔基质中、胶囊化技术、添加微米/毫米级粒子以及添加纳米粒子。介绍了作者在提高石蜡传热性能方面的初步研究成果,并对储热材料在开发新能源、提高能源利用率以及保温3个方面的应用进行了评述。
Phase change energy storage is an important technology to improve energy efficiency and protect environment. The disadvantage of familiar organic phase change material（PCM） is its low thermal conductivity, which reduces the energy efficiency of the whole system. In this paper, the recent research on the enhancement of heat transfer performance of organic PCM is described. The four main enhancement methods are analyzed, including microencapsulation, PCM adsorbed to the porous matrix, adding of micro/nun particles or nanoparticles, respectively. In addition, the preliminary research results of the authors are presented. The application of PCM is introduced in developing new energy, improving the energy efficiency and heat keeping.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第10期19-23,共5页
Modern Chemical Industry
基金
国家自然科学基金资助项目(20346001)
广州市科技计划项目(2008Z1-1061)
关键词
相变材料
储热
导热系数
纳米粒子
phase change materials
heat storage
thermal conductivity
nanoparticle
