viscosity Archives - Thermtest Inc.

The viscosity and thermal conductivity of ethane in the limit of zero density

Author(s): E. Vogel, J. Millat, S. Hendl, V. Vesovic, William A. Wakeham

New independent representations of the viscosity and thermal conductivity of ethane in the limit of zero density. For viscosity, the correlation is over the temperature range of 200 to 1000 K, with ...

Keywords: density, ethane, Finite Element Method (FEM), Liquids, low uncertainty, Nanofluids, Thermal Conductivity, THW, Transient Hot-Wire, viscosity

Experimental Data for the Viscosity and Thermal Conductivity of Water and Steam

Author(s): Akira Nagashima, D. G. Frienda, D. Giakoumakis, E. Bekou, J. Millat, M. A. Killeen, Marc J. Assael

All reliable experimental data available relating to the viscosity and thermal conductance of water has been collected and turned into the current temperature scale and a set of units. There ...

Keywords: data, Gas, liquid, properties, steam, Thermal Conductivity, THW, Transient Hot-Wire, triple point, Vapor, viscosity, Water

Thermal conductivity of four polyatomic gases

Author(s): Marc J. Assael, William A. Wakeham

The transient hot wire method was used to measure the thermal conductivity of the following polyatomic gases: hydrogen, nitrogen, carbon monoxide and methane. The measurements occurred in the range from 0.8...

Keywords: carbon monoxide, diffusion, energy, Gas, methane, Nitrogen, polyatomic gases, Thermal Conductivity, THW, Transient Hot-Wire, viscosity

The viscosity and thermal conductivity of normal hydrogen in the limit of zero density

Author(s): Marc J. Assael, S. Mixafendi, William A. Wakeham

With a basis upon the semi-classical kinetic theory of polyatomic gases and critically examined data, a new representation of the viscosity and thermal conductivity coefficients of normal hydrogen is created ...

Keywords: corresponding states, Hydrogen, Thermal Conductivity, THW, Transient Hot-Wire, viscosity

Potential applications of nanofluids for heat transfer

Author(s): Konstantinos D. Antoniadis, Marc J. Assael, William A. Wakeham, Xing Zhang

Multiple studies claiming the usefulness of nanofluids for the enhancement of heat transport have been proven ill-founded. Although they have significantly raised thermal conductivities, there is an inerrant increase in ...

Keywords: Heat Transfer, heating, liquid, Nanofluids, Nanoparticles, Phase change, Thermal Conductivity, THW, Transient Hot-Wire, viscosity

Investigation of the Thermal Conductivity and the Viscosity of Carbon Black Heat Transfer Nanofluids

Author(s): D. Hume, F. Chibante, L. Romero-Zeron, S. K. Mylona

Seven distinct samples of nanofluids consisting of different concentrations of spherical graphitized carbon black in an ethylene glycol solution were analyzed to determine their thermal and rheological behavior. The thermal ...

Keywords: carbon black, Ethylene glycol, Nanofluids, Temperature, Thermal Conductivity, Thermal conductivity of nanofluids, THW, Transient Hot-Wire (THW) Technique, viscoelastic, viscosity

Measurement of Thermal Conductivity of Kerosene – Graphene Nanofluid

Author(s): Aravind Vaidyanathan, Deepak Kumar Agarwal, Jophy Peter, S. Sunil Kumar

Kerosene graphene nanoplatelets (GNP) nanofluids have a potential use in regenerative cooling of semi-cryogenic rocket thrust chamber. Before they can be used, more must be known about this substance's physical ...

Keywords: graphene, Kerosene, Nanofluid, nanoplatelets, Thermal Conductivity, TLS, Transient Line Source, viscosity

When rocks get hot: thermal properties of reservoir rocks

Author(s): Dimitri V. Pissarenko, Evgeny Chekhonin, M.V. Chertenkov, Mikhail Spasennykh, Parshin A., Romushkevich R., Safonov S., V.P. Stenin, Yu. Popov

When attempting to extract reservoir fluid from rock, the rock is often heated. When the reservoir fluid is hotter it is less viscous and easier to extract. Knowing the thermal ...

Keywords: enhanced recovery methods, Optical Method, resevoir fluid, Rock, Soil, Thermal Conductivity, TLS, Transient Line Source, viscosity

Thermal conductivity and rheology behavior of aqueous nanofluids containing alumina and carbon nanotubes

Author(s): Bengt Sunden, Lars Wadso, Zan Wu, Zhaozan Feng

Many conventional fluids have low thermal conductivities. Adding thermally conductive nanometer-sized particles to these fluids transforms them into thermally conductive nanofluids. In this study, the thermal conductivity of aqueous alumina ...

Keywords: Agglomeration, Carbon Nanotube, Carbon nanotubes, Interfacial Thermal Resistance, Nanofluid, Thermal Conductivity, Transient Plane Source, viscosity

Rheology and Thermal Conductivity of Diamond Powder-Filled Liquid Epoxy Encapsulants for Electronic Packaging

Author(s): Jian H. Zhao, Kuang Sheng, Leonid Fursin, W. Roger Cannon, Xiangyang Hu, Xiaohui Wang, Yongxi Zhang

Diamond powders with various particle sizes were dispersed in an epoxy resin in an effort to increase its thermal conductivity. Dispersion of a mixture of particle sizes from 1 to 100 µm ...

Keywords: composites, Electronic Device Junction Temperature, electronic packaging, Epoxy, resin, Thermal Conductivity, viscosity

Keyword: viscosity