TEMPERATURE PROFILES PRODUCED BY A SPHERICAL HEAT SOURCE IMMERSED IN AN INFINITE LIQUID MEDIUM

J. D. Brionizio, G. H. Bonnier, A. F. Orlando

Abstract

Spherical heat source probes, which generate heat and monitor the temperature response with time, have been studied to measure thermal conductivity of different materials. However, for gases and liquids, the measurement of the thermal conductivity has to consider specific parameters. The aim of this paper is to model the physical phenomenon of a spherical device used to measure the thermal conductivity of liquids by means of the finite difference method, using commercial software, and then compare it to analytical equations. The influence of the thermal contact resistance in the process was also analyzed.

Keywords

thermal conductivity, temperature, liquids, spherical probe

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IMEKO-WC-2012-TC12-P4.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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