Ke-Fa Cen Archives - Thermtest Inc.

Enhanced thermal conductivity of ethylene glycol-based suspensions in the presence of silver nanoparticles of various sizes and shapes

Author(s): Guan-Hua Cheng, Ke-Fa Cen, Li-Wu Fan, Qing Ding, Xin Fang, Xu Xu, Ya-Cai Hu, Zi-Tao Yu

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 ...

Keywords: Nanoparticles, Shapes, Silver, Thermal Conductivity, Transient Plane Source

Effects of melting temperature and the presence of internal fins on the performance of a phase change material (PCM)-based heat sink

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

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 ...

Keywords: differential scanning calorimeter, Differential scanning calorimeter (DSC), DSC, Heat Sinks, Latent Heat of Fusion, Melting Temperature, pcms, phase change materials, specific heat capacity, Surface Heat Flux, Thermal Conductivity, Thermal Constants Analyzer, TPS Technique, Transient Plane Source, Transient plane source (TPS) method

A comprehensive characterization on the structural and thermophysical properties of sintered ore particles toward waste heat recovery applications

Author(s): Fu-You Tian, Ke-Fa Cen, Li-Wu Fan, Lian-Feng Huang, Xiao-Yuan Ying, Yuan-Kai Weng, Zi-Tao Yu

Thermophysical and structural properties of sintered ore particles (SOPs) were determined to expand upon the little documented information there is regarding the properties of these materials. In addition to this, ...

Keywords: density, differential scanning calorimeter, EDS, Mercury Intrusion Porosimetry, Mercury Intrusion Porosimetry (MIP), MIP, porosity, Sintered Iron Ores, specific heat capacity, Thermal Conductivity, Thermal Field Emission Scanning Electron Microscope, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Waste Heat Recovery, X-ray Diffraction, X-ray diffraction (XRD), X-Ray Energy Dispersive Spectroscopy, X-Ray Energy Dispersive Spectroscopy (EDS), XRD

An experimental investigation of melting of nanoparticle-enhanced phase change materials (NePCMs) in a bottom-heated vertical cylindrical cavity

Author(s): Ke-Fa Cen, Li-Wu Fan, Yi Zeng, Yu-Qi Xiao, Zi-Tao Yu

A nanoparticle-enhanced phase change material (NePCM) is prepared by the dispersal of carbon nanotubes in 1-dodecanol. The objective of this experiment was to determine if the addition of nanoparticles could ...

Keywords: Carbon nanotubes, CNTs, differential scanning calorimeter, Dynamic Viscosity, Latent Heat of Fusion, Melting Point, Nanoparticle-Enhanced Phase Change Materials, Nanoparticle-Enhanced Phase Change Materials (NePCMs), Nanoparticles, NePCMs, pcms, phase change materials, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, TEM, Thermal Conductivity, Transient Plane Source Technique, Transmission electron microscopy, Transmission electron microscopy (TEM)

Experimental Measurements of Thermal Conductivity of Wood Species in China: Effects of Density, Temperature, and Moisture Content

Author(s): Ke-Fa Cen, Li-Wu Fan, Xu Xu, Ya-Cai Hu, 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 ...

Keywords: building materials, construction, density, Heat Flow Meter Method, Heat Flow Meter Technique, Moisture Content, Temperature, Thermal Conductivity

Increased Thermal Conductivity of Eicosane-Based Composite Phase Change Materials in the Presence of Graphene Nanoplatelets

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

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. ...

Keywords: AFM, Atomic Force Microscope, Atomic Force Microscope (AFM), differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, Effective Medium Theory, Effective Medium Theory (EMT), Eicosane/GNP Composites, EMT, Fillers, graphene, Latent Heat of Fusion, Loading Fraction, Melting Point, Nanoparticles, pcms, phase change materials, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Size, TEM, Temperature, TES Systems, Thermal Conductivity, thermal energy storage, thickness, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Transmission electron microscopy, Transmission electron microscopy (TEM)

Papers Author: Ke-Fa Cen

Enhanced thermal conductivity of ethylene glycol-based suspensions in the presence of silver nanoparticles of various sizes and shapes

Effects of melting temperature and the presence of internal fins on the performance of a phase change material (PCM)-based heat sink

A comprehensive characterization on the structural and thermophysical properties of sintered ore particles toward waste heat recovery applications

An experimental investigation of melting of nanoparticle-enhanced phase change materials (NePCMs) in a bottom-heated vertical cylindrical cavity

Experimental Measurements of Thermal Conductivity of Wood Species in China: Effects of Density, Temperature, and Moisture Content

Increased Thermal Conductivity of Eicosane-Based Composite Phase Change Materials in the Presence of Graphene Nanoplatelets

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