A new method to measure the thermal diffusivity of liquids is presented. It requires determination of the time dependence of the thermal expansion of the liquid when it is subjected to a heat source at the top of the cell containing the liquid. The high accuracy of the method (about 3%) is due to an essential reduction of convective currents and also to the absence of temperature detectors, which generally introduce unwanted perturbations on the thermal Field.
A dilatometric method to measure the thermal diffusivity of nonmetallic liquids / M., Omini; Sparavigna, Amelia Carolina; Strigazzi, Alfredo. - In: INTERNATIONAL JOURNAL OF THERMOPHYSICS. - ISSN 0195-928X. - 15:2(1994), pp. 215-227. [10.1007/BF01441583]
A dilatometric method to measure the thermal diffusivity of nonmetallic liquids
SPARAVIGNA, Amelia Carolina;STRIGAZZI, Alfredo
1994
Abstract
A new method to measure the thermal diffusivity of liquids is presented. It requires determination of the time dependence of the thermal expansion of the liquid when it is subjected to a heat source at the top of the cell containing the liquid. The high accuracy of the method (about 3%) is due to an essential reduction of convective currents and also to the absence of temperature detectors, which generally introduce unwanted perturbations on the thermal Field.Pubblicazioni consigliate
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https://hdl.handle.net/11583/1406009
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