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Measurement Techniques

Erschienen in:

10.08.2019 | THERMOPHYSICAL MEASUREMENTS

Dependence of the Density of Entropy Production on the Rate of Changes in Temperature in the Linear Mode of Thermodynamics on the Examples of Graphite and Aluminum and Boron Nitrides

verfasst von: A. V. Kostanovskii, M. E. Kostanovskaya

Erschienen in: Measurement Techniques | Ausgabe 4/2019

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Abstract

We analyze the experimental thermograms of specimens in the form of plates of aluminum and boron nitrides heated by a laser and a freely cooled graphite sphere. It is shown that all thermograms can be referred to the linear law of thermodynamics. The linear dependence of density of the entropy production on the rate of changes in temperature is established. It is proposed to consider the rate dT/dτ as an additional variable for the density of entropy production in the linear thermodynamic law and apply this rate for the representation of the properties determined in the nonstationary thermal mode.

Vorheriger Artikel Assessment of Influence of Flow Diverter on the Metrological Characteristics of Calibration Devices Used for the Units of Mass and Unit of Volume of a Liquid in a Flow and of Mass and Volume Discharges of Liquid

Nächster Artikel Metrological Aspects of Measuring the Volume-Average Temperature of Filaments in Illuminating Lamps

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Titel: Dependence of the Density of Entropy Production on the Rate of Changes in Temperature in the Linear Mode of Thermodynamics on the Examples of Graphite and Aluminum and Boron Nitrides
verfasst von: A. V. Kostanovskii
M. E. Kostanovskaya
Publikationsdatum: 10.08.2019
Verlag: Springer US
Erschienen in: Measurement Techniques / Ausgabe 4/2019
Print ISSN: 0543-1972
Elektronische ISSN: 1573-8906
DOI: https://doi.org/10.1007/s11018-019-01629-7

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