Heat transport and storage processes in differential scanning calorimeter: Computational analysis and model validation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00330082" target="_blank" >RIV/68407700:21110/19:00330082 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.ijheatmasstransfer.2019.03.015" target="_blank" >https://doi.org/10.1016/j.ijheatmasstransfer.2019.03.015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijheatmasstransfer.2019.03.015" target="_blank" >10.1016/j.ijheatmasstransfer.2019.03.015</a>
Alternative languages
Result language
angličtina
Original language name
Heat transport and storage processes in differential scanning calorimeter: Computational analysis and model validation
Original language description
Experimental results provided by differential scanning calorimetry (DSC) can be affected by systematic errors, which are difficult to identify and quantify correctly by the end-users, as a DSC device is commonly used as a gray box. The signal delay due to thermal inertia and the effects of sample size or heating rate present the most common sources of uncertainties. In this paper, a 3-D computational model of a differential scanning calorimeter is constructed, calibrated and validated. Five reference standards are used for both experimental and computational calibration, resulting in a very good agreement (R2 > 0.999794) of the computational model with experimental outputs. Model is validated using two different materials and processes. The analysis of melting of aluminum, as one of the standards not used at the calibration, shows a maximum difference of 0.279 mW.mg-1 at the peak top, which is well within the accuracy limits. The application of the model for the determination of effective specific heat capacity of quartz, as a representative of commonly studied materials which are though not standardized for DSC, reveal a good agreement with both the measured data and the results of independent experiments reported by several other investigators. The main advantage of the model consists in the detailed analysis and separation or quantification of particular heat evolving/consuming mechanisms in both the DSC device and the studied materials. Therefore, contrary to the empirical calibration, it can identify exactly the physical sources of measurement uncertainties. The raw experimental data provided by the DSC device can then be corrected in a straightforward way and the systematic errors can be eliminated.
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/GA17-01365S" target="_blank" >GA17-01365S: Modelling and experimental verification of the effect of freeze-thaw cycles on the degradation of porous building materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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 Heat and Mass Transfer
ISSN
0017-9310
e-ISSN
1879-2189
Volume of the periodical
136
Issue of the periodical within the volume
June
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
355-364
UT code for WoS article
000467195600028
EID of the result in the Scopus database
2-s2.0-85062447287