Visual monitoring of the melting front propagation in a paraffin-based PCM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU121112" target="_blank" >RIV/00216305:26210/16:PU121112 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/201714302042" target="_blank" >http://dx.doi.org/10.1051/epjconf/201714302042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201714302042" target="_blank" >10.1051/epjconf/201714302042</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Visual monitoring of the melting front propagation in a paraffin-based PCM

Popis výsledku v původním jazyce

Experiments were carried out in an environmental chamber with the aim to monitor the melting front propagation in a rectangular cavity filled with a paraffin-based Phase Change Material (PCM). The PCM was contained in transparent containers with the heat flux introduced by means of an electric heating element. The stabilized power source was used to maintain the constant heat output of the heating elements. The experiments were performed for the heat flux introduced at the side wall of the container and at the upper surface of the PCM. The paraffin-based PCM RT28HC with the phase change temperature of 28 °C was used in the experiments. The temperature in the environmental chamber was maintained at the melting temperature of the PCM. The propagation of the melting front was monitored with a digital camera and temperatures at several locations were monitored with RTDs and thermocouples. Significant natural convection was observed for the heat flux introduced at the side wall of the container. As a result the melting front propagated much faster at the top of the container than at its bottom. The heat flux introduced at the upper-surface of the PCM resulted in almost one-dimensional propagation of the melting front. The acquired data are to be used for validation of an in-house developed numerical model based on the fronttracking method.

Název v anglickém jazyce

Visual monitoring of the melting front propagation in a paraffin-based PCM

Popis výsledku anglicky

Experiments were carried out in an environmental chamber with the aim to monitor the melting front propagation in a rectangular cavity filled with a paraffin-based Phase Change Material (PCM). The PCM was contained in transparent containers with the heat flux introduced by means of an electric heating element. The stabilized power source was used to maintain the constant heat output of the heating elements. The experiments were performed for the heat flux introduced at the side wall of the container and at the upper surface of the PCM. The paraffin-based PCM RT28HC with the phase change temperature of 28 °C was used in the experiments. The temperature in the environmental chamber was maintained at the melting temperature of the PCM. The propagation of the melting front was monitored with a digital camera and temperatures at several locations were monitored with RTDs and thermocouples. Significant natural convection was observed for the heat flux introduced at the side wall of the container. As a result the melting front propagated much faster at the top of the container than at its bottom. The heat flux introduced at the upper-surface of the PCM resulted in almost one-dimensional propagation of the melting front. The acquired data are to be used for validation of an in-house developed numerical model based on the fronttracking method.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA15-11977S" target="_blank" >GA15-11977S: Adaptivní front tracking metoda pro paralelní řešení problémů se změnou fáze</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the International Conference Experimental Fluid Mechanics 2016

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

5

Strana od-do

284-288

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Mariánské lázně

Datum konání akce

15. 11. 2016

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000407743800044