Spherical Apparatus for Measuring the Thermal Conductivity of Liquids

Abstract
A thin-film spherical conduction apparatus was designed and constructed for application to relatively viscous liquids such as hydrocarbon lubricants over a temperature range from ambient to −100°F and encompassing the solidification temperature. Freedom from the effects of convective heat transfer was demonstrated experimentally. The absolute accuracy of the measurements made with this instrument is believed to be within 2%.

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