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Energies 2016, 9(1), 30; doi:10.3390/en9010030

Phase Change Materials-Assisted Heat Flux Reduction: Experiment and Numerical Analysis

1
High-Speed Reacting Flow Laboratory, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor 81310, Malaysia
2
Machine and Mechanical Department, University of Technology, Baghdad 35023, Iraq
3
Baqubah Technical Institute, Middle Technical University, Baghdad 06800, Iraq
*
Authors to whom correspondence should be addressed.
Academic Editor: Nyuk Hien Wong
Received: 21 September 2015 / Revised: 30 November 2015 / Accepted: 25 December 2015 / Published: 7 January 2016
(This article belongs to the Special Issue Energy Efficient Building Design 2016)

Abstract

Phase change materials (PCM) in the construction industry became attractive because of several interesting attributes, such as thermo-physical parameters, open air atmospheric condition usage, cost and the duty structure requirement. Thermal performance optimization of PCMs in terms of proficient storage of a large amount of heat or cold in a finite volume remains a challenging task. Implementation of PCMs in buildings to achieve thermal comfort for a specific climatic condition in Iraq is our main focus. From this standpoint, the present paper reports the experimental and numerical results on the lowering of heat flux inside a residential building using PCM, which is composed of oil (40%) and wax (60%). This PCM (paraffin), being plentiful and cost-effective, is extracted locally from waste petroleum products in Iraq. Experiments are performed with two rooms of identical internal dimensions in the presence and absence of PCM. A two-dimensional numerical transient heat transfer model is developed and solved using the finite difference method. A relatively simple geometry is chosen to initially verify the numerical solution procedure by incorporating in the computer program two-dimensional elliptic flows. It is demonstrated that the heat flux inside the room containing PCM is remarkably lower than the one devoid of PCM. View Full-Text
Keywords: phase change material (PCM); wax; melting temperature; heat flux phase change material (PCM); wax; melting temperature; heat flux
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Akeiber, H.J.; Hosseini, S.E.; Wahid, M.A.; Hussen, H.M.; Mohammad, A.T. Phase Change Materials-Assisted Heat Flux Reduction: Experiment and Numerical Analysis. Energies 2016, 9, 30.

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