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Computational compensation of systematic errors accompanying non-equilibrium thermocouple measurements

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00350033" target="_blank" >RIV/68407700:21110/21:00350033 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1016/j.ijthermalsci.2021.107049" target="_blank" >https://doi.org/10.1016/j.ijthermalsci.2021.107049</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.ijthermalsci.2021.107049" target="_blank" >10.1016/j.ijthermalsci.2021.107049</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Computational compensation of systematic errors accompanying non-equilibrium thermocouple measurements

  • Original language description

    Application of thermocouple sets of various complexity as temperature sensors in porous materials can be accompanied with systematic errors related to the very high differences between the thermal conductivities of thermocouple forming metals and measured samples. Since the higher measurement uncertainties can then make some presumed utilizations of measured temperature fields questionable, this paper introduces an approach which can overcome this drawback. Using a computational model, it is able to separate parameters of particular constituents of the sample-thermocouple system that helps to filter out the systematic errors by means of extracting the pure material parameters. The applicability of the approach is demonstrated on a one-sided high-temperature heating experiment, in which the temperature field in a sample is monitored and subsequently used for the determination of thermal conductivity. The effect of the computational compensation procedure is found to be very significant. The up to 64 °C temperature differences between the raw data and corrected values can cause systematic thermal conductivity errors of up to 46%. Depending on temperature, the corrected thermal conductivity is then by up to 0.89 W.m-1.K-1 lower.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/GA20-00653S" target="_blank" >GA20-00653S: Physical and chemical processes in low-cement heat resistant composites</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal of Thermal Sciences

  • ISSN

    1290-0729

  • e-ISSN

    1778-4166

  • Volume of the periodical

    168

  • Issue of the periodical within the volume

    May

  • Country of publishing house

    FR - FRANCE

  • Number of pages

    12

  • Pages from-to

  • UT code for WoS article

    000661867000007

  • EID of the result in the Scopus database

    2-s2.0-85107298728