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  - Column 1
    - HFM-100ASTM C518-17, ISO 8301:1991, EN 12667
    - TLS-100ASTM D7896-14, IEEE 4442-1981
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    - THW-L2ASTM D7896-19
    - GHFM-02ASTM E1530-19
    - TPS-EFFASTM D7984-16
  - Column 2
    - DSC-L600ASTM/ISO
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    - TGA-1500ASTM/ISO
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Papers Author: Ronald J. Warzoha

Total Papers Found: 6

Effect of Graphene Layer Thickness and Mechanical Compliance on Interfacial Heat Flow and Thermal Conduction in Solid–Liquid Phase Change Materials

Author(s): Amy S. Fleischer, Ronald J. Warzoha

The thermal conductivities of paraffin-based composite phase change materials (PCMs) containing different types of graphene nanoparticles were determined using the transient plane source method. It was determined that the thermal ...

Keywords: graphene, Interfacial Thermal Resistance, nanocomposites, pcms, phase change materials, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Thermal Conductivity, Transient Plane Source, Transient plane source (TPS) method

Improved heat recovery from paraffin-based phase change materials due to the presence of percolating graphene networks

Author(s): Amy S. Fleischer, Ronald J. Warzoha

Four different paraffin-based nanocomposite phase change materials (PCMs) were prepared by dispersion of 20 v. % of graphene, multi-walled carbon nanotubes (MWCNTs), aluminum, or TiO2 nanoparticles into a paraffin matrix. It was ...

Keywords: Carbon nanotubes, CNTs, differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, graphene, Melt Temperature, nanocomposites, Nanoparticles, pcms, phase change enthalpy, phase change materials, Phase Transition Temperature, Solidification Temperature, Thermal Conductivity, Thermal Energy Recovery, Transient Plane Source Technique, Transient Thermal Response

Effect of carbon nanotube interfacial geometry on thermal transport in solid–liquid phase change materials

Author(s): Amy S. Fleischer, Ronald J. Warzoha

The thermal conductivities of four composite paraffin phase change materials (PCMs) containing embedded multi-walled carbon nanotubes (MWCNTs) with varying dimensions were determined. The goals of this study were to investigate ...

Keywords: Aspect Ratio, Carbon nanotubes, CNTs, composite, density, diameter, Fillers, Interfacial Thermal Resistance, Length, pcms, phase change materials, Thermal Conductivity, Thermal Diffusivity, TPS Device, Transient Plane Source, Transient Plane Source (TPS) Device

Temperature-dependent thermal properties of a paraffin phase change material embedded with herringbone style graphite nanofibers

Author(s): Amy S. Fleischer, Rebecca M. Weigand, Ronald J. Warzoha

The authors outline a method of enhancing the thermal properties of a paraffin phase change material through the addition of herringbone-style graphite nanofibers (HGNFs). It was found that the solid-phase ...

Keywords: Bulk Thermal Conductivity, density, differential scanning calorimeter, Fillers, graphite, Latent Heat of Fusion, Melt Temperature, nanocomposites, Nanofibers, Paraffin, paraffin (PA), pcms, phase change materials, SEM Imaging, Thermal Boundary Resistance, Thermal Diffusivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Volumetric Heat Capacity

Determining the thermal conductivity of liquids using the transient hot disk method. Part II: Establishing an accurate and repeatable experimental methodology

Author(s): Amy S. Fleischer, Ronald J. Warzoha

The authors state that the Hot Disk TPS technique isn't an accurate method for the measurement of thermal conductivity, thermal diffusivity and volumetric heat capacity of liquids. This is due ...

Keywords: density, Measurement of Liquids, Measurement Time, Nanofluids, Natural convection, Prandtl Number, Sensor Power, Temperature, Thermal Conductivity, Thermal Diffusivity, TPS Technique, Volumetric Heat Capacity

Determining the thermal conductivity of liquids using the transient hot disk method. Part I: Establishing transient thermal-fluid constraints

Author(s): Amy S. Fleischer, Ronald J. Warzoha

The authors look into problems with accurately measuring thermal conductivity of liquid samples. Among these problems is the onset of natural convection during the measurement of thermal properties, which may ...

Keywords: Boussinesq Approximation, coefficient of thermal expansion, Coefficient of thermal expansion (CTE), Courant Number, density, Deviation, FLUENT, Heat Capacity, IBM Statistical Product and Service Solutions, IBM Statistical Product and Service Solutions (SPSS) Statistics Package, Nanofluids, Natural convection, Prandtl Number, Rayleigh Number, Sensitivity Analysis, SPSS, Statistics Package, Temperature, Thermal Conductivity, Thermal Diffusivity, TPS Method, Transient Plane Source, Transient plane source (TPS) method

Papers Author: Ronald J. Warzoha

Effect of Graphene Layer Thickness and Mechanical Compliance on Interfacial Heat Flow and Thermal Conduction in Solid–Liquid Phase Change Materials

Improved heat recovery from paraffin-based phase change materials due to the presence of percolating graphene networks

Effect of carbon nanotube interfacial geometry on thermal transport in solid–liquid phase change materials

Temperature-dependent thermal properties of a paraffin phase change material embedded with herringbone style graphite nanofibers

Determining the thermal conductivity of liquids using the transient hot disk method. Part II: Establishing an accurate and repeatable experimental methodology

Determining the thermal conductivity of liquids using the transient hot disk method. Part I: Establishing transient thermal-fluid constraints

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