Publication detail

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

CHARVÁT, P. ŠTĚTINA, J. MAUDER, T. KLIMEŠ, L.

Original Title

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

Type

conference paper

Language

English

Original Abstract

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.

Keywords

Front propagation, PCM, experimantal measurement

Authors

CHARVÁT, P.; ŠTĚTINA, J.; MAUDER, T.; KLIMEŠ, L.

Released

15. 11. 2016

Publisher

EDP Sciences

ISBN

2100-014X

Periodical

EPJ Web of Conferences

Year of study

143

Number

1

State

French Republic

Pages from

284

Pages to

288

Pages count

5

URL

https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02042/epjconf_efm2017_02042.html

Full text in the Digital Library

http://hdl.handle.net/11012/204253

BibTex

@inproceedings{BUT129892,
  author="Pavel {Charvát} and Josef {Štětina} and Tomáš {Mauder} and Lubomír {Klimeš}",
  title="Visual monitoring of the melting front propagation in a paraffin-based PCM",
  booktitle="Proceedings of the International Conference Experimental Fluid Mechanics 2016",
  year="2016",
  journal="EPJ Web of Conferences",
  volume="143",
  number="1",
  pages="284--288",
  publisher="EDP Sciences",
  doi="10.1051/epjconf/201714302042",
  issn="2100-014X",
  url="https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02042/epjconf_efm2017_02042.html"
}