Correction of errors in DSC measurements using detailed modeling of thermal phenomena in calorimeter-sample system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00341017" target="_blank" >RIV/68407700:21110/20:00341017 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/TIM.2020.2987454" target="_blank" >https://doi.org/10.1109/TIM.2020.2987454</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TIM.2020.2987454" target="_blank" >10.1109/TIM.2020.2987454</a>
Alternative languages
Result language
angličtina
Original language name
Correction of errors in DSC measurements using detailed modeling of thermal phenomena in calorimeter-sample system
Original language description
Measurements of quantities by differential scanning calorimetry (DSC) are influenced by intrinsic factors given by the construction limits of particular DSC devices. The position of temperature sensors outside the samples causes the produced experimental outputs to suffer from signal delay or partial signal consumption. Differences in sample mass and heating rate belong to other typical sources of errors which cannot be fully eliminated even by the experimental calibration. In this paper, a computational method involving detailed modeling of thermal phenomena in the calorimeter-sample system is used for the correction of inaccuracies in DSC measurements. The applied model is able to extract pure data related to the sample itself that is free of distortion. In a practical application of the method, lime hydrate samples of various mass are analyzed at first experimentally while several different heating rates are used, and the influence of varying parameters on the obtained outputs is recorded. The experimental data are then reconstructed using computational modeling of thermal phenomena in the calorimeter-sample system. The corrected specific heat power values are found to be up to 9% higher and can be attributed to the heat capacity of inner parts of the device that consume a part of the heat. The highest agreement between experimental and computational outputs is achieved when a sample filling one half of the crucible’s volume is heated at 7 K.min-1. Such a parameter choice shows a low temperature shift (<5 °C) and the specific heat power difference is only 0.09 mW.mg-1 (3.4 %).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA18-03997S" target="_blank" >GA18-03997S: Interior plasters with enhanced moisture accumulation capability</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Transactions on Instrumentation and Measurement
ISSN
0018-9456
e-ISSN
1557-9662
Volume of the periodical
69
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
8178-8186
UT code for WoS article
000571849100083
EID of the result in the Scopus database
2-s2.0-85091737675