Affiliation:
1. School of Mechanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China
2. School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
Abstract
Organic phase change material is an ideal solution to solve the heat dissipation problem of electronic devices. However, its low thermal conductivity limits its application. To solve this problem, a new porous aluminum skeleton/paraffin composite phase change material (AS-PCM) was prepared. The effects of porosity and porous aluminum skeletons on temperature control performance were explored. The experimental results show that the addition of AS significantly improves the thermal conductivity of organic PCM, and the thermal conductivity of AS-PCM is 32.3–59.6 times higher than that of pure paraffin. In addition, the temperature difference in AS-PCM with 75% porosity is 1–2 °C lower than that of AS-PCM with 85%, and 5–8 °C lower than that of AS-PCM with 95% porosity. The skeleton structure has an impact on the temperature control performance. The Mcc porous aluminum skeleton/paraffin composite phase change material (MAS-PCM) yields the best thermal performance compared with the Fcc porous aluminum skeleton/paraffin composite phase change material (FAS-PCM). The temperature control time of the MAS-PCM heat sink is increased by 5.3–50.8% relative to the FAS-PCM heat sink. The research results provide a novel approach for improving the thermal conductivity of PCMs.
Funder
National Natural Science Foundation of China
Postdoctoral Research Funding Project of Jiangxi, China
Jiangxi Province Engineering Research Center of New Energy Technology and Equipment, the East China University of Technology
Science and Technology Project of Jiangxi, China
Doctoral foundation of the Guangxi University of Science and Technology