A new design was presented of a portable transient hot wire apparatus for measuring the
thermal conductivity of solids. The design features a two-wire sensor with silicon layers, compact printed electronic board and a high-tech software suite that utilizes the Finite Elements Method to model heat flow. This methodology is 120x's faster than any previous approach and can reduce the number of ...
Author(s): Ifigeneia Metaxa, Konstantinos D. Antoniadis, Marc J. Assael
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 in the limit of zero density as a function of temperature. Measurements are made with the transient hot wire method, among others, and are taken between 20 and 2200 Kelvin. The highest uncertainties are 2%, ...
Author(s): Marc J. Assael, S. Mixafendi, William A. Wakeham
This paper investigates the thermal capacity of multiple varieties of lead-free molten solder for application in electrical equipment. An accurate understanding of these properties would lead to a better controlled soldering process. Measurements are taken by a transient hot wire that was originally designed to be used on pure molten metals, but an improved finite-element code analyzed the data (this is called FE modeling). The measurements are taken from the ...
Author(s): Jaromir Bilek, John K Atkinson, William A. Wakeham
7-Methyl-1,5,7-triazabicyclo[4,40]dec-5-ene (mTBD) is an important industrial chemical that is commonly used as a catalyst. Prior to the research conducted by Baird et al, the only available data on this chemical pertained to its density and a single vapor pressure value that is provided on chemical safety data sheets. This paper presents the first reliable, publicly available data on the thermodynamic and transport properties of mTBD. These values ...
Author(s): Artur Dahlberg, Daniel Cederkrantz, Herbert Sixta, Ilkka KilpelC$inen, Joanna Witos, Jussi Helminen, Nahla Osmanbegovic, Paulus HyvC$ri, Petri Uusi-Kyyny, Susanne K. Wiedmer, Ville Alopaeus, Zachariah Steven Baird
