Silver (Ag) has the highest thermal conductivity of all metals, making it an attractive nanoparticle for use in heat transfer systems. The shape of nanoparticles influences their thermal conductivity, so three varieties of Ag nanoparticles were tested in this study. The Thermal Constants Analyser measured the thermal conductivity of Ag nanospheres (NSs), nanowires (NWs), and nanoflakes (NFs) between 10-30 °C using the transient plane source (TPS) method. Results showed that ...
Author(s): Guan-Hua Cheng, Ke-Fa Cen, Li-Wu Fan, Qing Ding, Xin Fang, Xu Xu, Ya-Cai Hu, Zi-Tao Yu
A paraffin-based composite phase change material (PCM) was prepared by the addition of hexagonal boron nitride (h-BN) nanosheets to melted paraffin wax followed by vigorous stirring. The nanosheets were added in quantities ranging from 1 to 10 wt. %. A reference sample of pure paraffin was also prepared. It was determined that the addition of h-BN nanosheets resulted in an increase in thermal conductivity and that the melting and solidification rates were also ...
Author(s): Guan-Hua Cheng, Jian-Feng Hou, Li-Wu Fan, Qing Ding, Xiao Wang, Xiao-Li Yao, Xin Fang, Ya-Cai Hu, Yu-Yue Wu, Zi-Tao Yu
Two organic phase change materials (PCMs) were investigated to determine their effects on the thermal management capabilities of electronics. The thermo-physical properties of n-eicosane and 1-hexadecanol were determined experimentally, and the two PCMs were then added to unfinned, and finned heat sinks. It was determined that a PCM with a high melting point is able to increase the time of protection from overheating; however, it was also determined that if ...
Author(s): Ke-Fa Cen, Li-Wu Fan, Rong-Hua Hong, Xiao Wang, Xin Fang, Xu Xu, Ya-Cai Hu, Yi Zeng, Yu-Qi Xiao, Zi-Tao Yu
The authors selected 5 types of softwood species and 5 types of hardwood species that are commonly grown and used for construction in China for thermal analysis. Not only was thermal conductivity measured, but its dependence on moisture content, density and temperature of the wood samples was also investigated. Thermal conductivity was found to increase with increasing density of the wood sample and increasing moisture content. Thermal conductivity was also found to ...
Author(s): Ke-Fa Cen, Li-Wu Fan, Xu Xu, Ya-Cai Hu, Zi-Tao Yu
The addition of graphene nanoplatelets (GNP) to a paraffin-based solvent, eicosane was performed at various wt.% and subsequently the synthesized GNP/eicosane composites were analyzed by a variety of machines. The characterization of the GNP/eicosane composites was performed by the TPS technique for the measurement of thermal conductivity from 10°C to 35°C. At a wt.% of 10 GNP filler the composite had a thermal conductivity four times that of unfilled ...
Author(s): Guan-Hua Cheng, Jian-Feng Hou, Ke-Fa Cen, Li-Wu Fan, Qing Ding, Xiao Wang, Xiao-Li Yao, Xin Fang, Ya-Cai Hu, Zi-Tao Yu
