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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Applied Thermal Engineering

ISSN

1359-4311

e-ISSN

—

Svazek periodika

121

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

547-553

Kód UT WoS článku

000406169600052

EID výsledku v databázi Scopus

2-s2.0-85018971586