Thermal response of mortar panels with different forms of macro-encapsulated phase change materials

A finite element study

Sih Ying Kong, Xu Yang, Suvash Chandra Paul, Leong Sing Wong, Branko Šavija

Research output: Contribution to journalArticle

Abstract

This paper presents a numerical investigation of thermal response of mortar panels, incorporating macro-encapsulated paraffin in different forms. Two types of macro capsules were fabricated and tested in this study using an instrumented hot plate device. The experimental results show that macro encapsulated paraffin reduced the temperature and increased time lag in the mortar panels due to the latent heat capacity of paraffin. Finite element models adopting the effective heat capacity method to model phase change effects were able to capture the overall thermal response of panels incorporated with paraffin well. Then, a parametric study was conducted using the validated finite element (FE) modelling technique to investigate the effects of different forms of macro capsules, the quantity of paraffin and the position of macro capsules. It was found that the tube and sphere macro capsules showed similar thermal responses, while the plate shaped capsules may cause a non-uniform temperature distribution in mortar panels. The quantity and position of paraffin have significant effects on the thermal response of the mortal panels. A higher paraffin content results in a significantly longer temperature lag and a lower temperature during the phase transition of paraffin. Furthermore, placing the paraffin away from the heating face can cause a longer temperature lag on the other face, which is desirable for building façade applications.

Original languageEnglish
Article number2636
JournalEnergies
Volume12
Issue number13
DOIs
Publication statusPublished - 01 Jan 2019

Fingerprint

Phase Change Material
Mortar
Phase change materials
Paraffins
Macros
Finite Element
Heat Capacity
Face
Time Lag
Finite Element Modeling
Phase Change
Temperature Distribution
Numerical Investigation
Finite Element Model
Heating
Tube
Specific heat
Phase Transition
Form
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

Kong, Sih Ying ; Yang, Xu ; Paul, Suvash Chandra ; Wong, Leong Sing ; Šavija, Branko. / Thermal response of mortar panels with different forms of macro-encapsulated phase change materials : A finite element study. In: Energies. 2019 ; Vol. 12, No. 13.
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Thermal response of mortar panels with different forms of macro-encapsulated phase change materials : A finite element study. / Kong, Sih Ying; Yang, Xu; Paul, Suvash Chandra; Wong, Leong Sing; Šavija, Branko.

In: Energies, Vol. 12, No. 13, 2636, 01.01.2019.

Research output: Contribution to journalArticle

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