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
The effects of silver nanowire size on the thermal conductivities of ethylene glycol-based nanofluids were investigated experimentally. The effects of altering the loading concentration of nanowires, and altering the temperature were also investigated. In addition to this, an investigation into the effects of the nanowire dimensions on the rheological properties of the nanofluids was also conducted. Theoretical models were then developed based on the experimental results....
Author(s): Hai Lu, Li-Wu Fan, Qing Ding, Xin Fang, 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
Thermal energy storage (TES) is incredibly important to expanding the field of renewable energy. In this study, the authors look at the potential of composite phase change materials (PCMs) for use in this application. A ball milling method was used to exfoliate expanded graphite in nanosheets that could be added to eicosane to create composite materials. Composites with nanosheets of various sizes were created, and the effect of cooling rate ...
Author(s): Ching-Ping Wong, Kyoung-Sik Moon, Li-Yi Li, Qing Ding, Xin Fang, 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
