VALIDATION OF EXPERIMENTAL RESULTS IN THE DETERMINATION OF THERMAL CONDUCTIVITY
VALIDATION OF EXPERIMENTAL RESULTS IN THE DETERMINATION OF THERMAL CONDUCTIVITY
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DOI: 10.22533/at.ed.6962322125
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Palavras-chave: Condutividade térmica; determinação experimental; validação; materiais de referências
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Keywords: Thermal conductivity; measurement; validation; reference material
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Abstract: A non-destructive experimental technique, by electrical measurements, was used to determine the thermal conductivity of volumetric samples and will be presented here. This technique involves applying heat pulses using electrical current to a resistive element and monitoring the temperature rise over time. For technique validation, experimental results of reference samples, such as water and ice, for liquids and solids, respectively, are presented. Experimental results of dielectric liquids used in electric power transformers are also presented, as well as a sample of sand used by the Electric Sector in the thermal dissipation of underground electric cables.
- Márcio Antônio Sens