Computational analysis of heat transport and storage processes in large-volume isothermal heat flow calorimeter

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00311586" target="_blank" >RIV/68407700:21110/17:00311586 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.applthermaleng.2017.04.118" target="_blank" >http://dx.doi.org/10.1016/j.applthermaleng.2017.04.118</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.applthermaleng.2017.04.118" target="_blank" >10.1016/j.applthermaleng.2017.04.118</a>

Result language
angličtina
Original language name
Computational analysis of heat transport and storage processes in large-volume isothermal heat flow calorimeter
Original language description
Isothermal heat flow calorimeters for large-volume applications are utilized for monitoring heat generation in highly inhomogeneous systems mostly. However, the time delay of measured data caused by internal heat inertia limits their effective use to slower processes. In this paper, a computational analysis of heat transport and storage processes in a large-volume isothermal heat flow calorimeter is presented. Using a three dimensional computational representation of the real device, thermal processes occurring in the calorimeter-sample system are simulated and the time delay between the generation of internal heat and its subsequent detection is identified. The computational model is calibrated at first, using four different constant heat power pulses, and then verified in an independent heat power scheme. The comparison of experimental and computational outputs shows a very high level of agreement, R2 = 0.9998, which gives the applied modeling approach good prerequisites for successful practical applications. Apparently, the computational model introduced in this paper is able to provide higher accuracy than common mathematical corrections of experimental outputs that have been used so far.
Czech name
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Czech description
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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
20101 - Civil engineering

Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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