Thermal behavior of PCMs during phase transitions with phase change hysteresis: Experimental setup development and problems of model validation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU155280" target="_blank" >RIV/00216305:26210/24:PU155280 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/IMECE2023-113269" target="_blank" >http://dx.doi.org/10.1115/IMECE2023-113269</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/IMECE2023-113269" target="_blank" >10.1115/IMECE2023-113269</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal behavior of PCMs during phase transitions with phase change hysteresis: Experimental setup development and problems of model validation

Popis výsledku v původním jazyce

Various models and approaches for phase transitions of phase change materials (PCMs) have been proposed in recent years. However, many of these models lack validation with experimental data, particularly the models for phase change hysteresis (PCH) and incomplete (partial) phase transitions. To address this issue, an experimental setup was designed, assembled and tested for potential validation of numerical models. The experiments involve monitoring of the heat flux and the temperature distribution in a PCM contained in a rectangular cavity with a heated/cooled wall. Peltier cells are used to introduce positive or negative heat flux - heating and cooling of the PCM. The first sets of experiments were conducted with the RT35HC paraffin-based PCM. The ultimate goal of the experiments is to provide experimental data for solving inverse heat transfer problems, specifically the identification of the relationships between the enthalpy and temperature during complete and incomplete phase transitions of a PCM. The results suggest that in order to properly account for the influence of natural convection in liquid PCM, a more appropriate experimental setup that avoids its effects or a more suitable modelling approach is required.

Název v anglickém jazyce

Thermal behavior of PCMs during phase transitions with phase change hysteresis: Experimental setup development and problems of model validation

Popis výsledku anglicky

Various models and approaches for phase transitions of phase change materials (PCMs) have been proposed in recent years. However, many of these models lack validation with experimental data, particularly the models for phase change hysteresis (PCH) and incomplete (partial) phase transitions. To address this issue, an experimental setup was designed, assembled and tested for potential validation of numerical models. The experiments involve monitoring of the heat flux and the temperature distribution in a PCM contained in a rectangular cavity with a heated/cooled wall. Peltier cells are used to introduce positive or negative heat flux - heating and cooling of the PCM. The first sets of experiments were conducted with the RT35HC paraffin-based PCM. The ultimate goal of the experiments is to provide experimental data for solving inverse heat transfer problems, specifically the identification of the relationships between the enthalpy and temperature during complete and incomplete phase transitions of a PCM. The results suggest that in order to properly account for the influence of natural convection in liquid PCM, a more appropriate experimental setup that avoids its effects or a more suitable modelling approach is required.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA22-31173S" target="_blank" >GA22-31173S: Adaptivní soft computing framework pro řešení inverzních úloh přenosu tepla se změnou skupenství</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

ASME 2023 International Mechanical Engineering Congress and Exposition

ISBN

978-0-7918-8770-7

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

„113269“-„“

Název nakladatele

ASME

Místo vydání

New Orleans, Louisiana, USA

Místo konání akce

New Orleans

Datum konání akce

29. 10. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001216762600007