Solid-Liquid Phase Change Performance of Sodium Acetate Trihydrate + AlN Nanoparticles

摘要：

Sodium Acetate Trihydrate (SAT) has high energy storage density and high thermal conductivity, which make it be one of the important phase change materials (PCMs) for thermal storage. As a salt hydrate, SAT suffers from serious supercooling and phase segregation during the solidification process. Therefore, its application requires the use of some nucleating and thickening agents. In this study, AlN nanoparticles is proposed as the nucleating agent and Carboxyl methyl Cellulose (CMC) is the thickener for SAT. The phase change temperature and the latent heat of SAT with the addition of AlN nanoparticles and CMC are experimental measured. The results show that AlN nanoparticles can reduce the suprecooling of SAT significantly. For the composite of SAT with 5 wt％ AlN nanoparticles and 4 wt％ CMC, no supercooling occurs and its phase change temperature and the latent heat are 52.5℃ and 227.54 kJ/kg, respectively.

关键词： Sodium Acetate Trihydrate AlNNanoparticles phase change materials nucleatingagent supercooling

作者: Peng Hu Da-Jie Lu Xiang-Yu Fan Ze-Shao Chen

作者单位: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, PR China

会议类型: 国际会议

会议名称: The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)

会议地点: 北京

会议语种:英文

页码: 128-131

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）