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Buildings 2017, 7(3), 78; doi:10.3390/buildings7030078

PCMs for Residential Building Applications: A Short Review Focused on Disadvantages and Proposals for Future Development

Hydrogen for Mobility Lab, Centre for Mobility and Transport, School of Mechanical, Automotive and Aerospace Engineering, Coventry University, Priory Street, Coventry CV1 5FB, UK
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Received: 17 July 2017 / Revised: 5 August 2017 / Accepted: 21 August 2017 / Published: 28 August 2017
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Abstract

Phase change materials (PCMs) offer great potential as a latent heat energy storage technique to provide energy efficient systems in new and existing residential buildings. Due to their unique characteristic of high storage densities and latent heat properties, PCMs provide opportunities for greater energy storage in many applications for residential buildings. These applications include, but are not limited to, solar water heating, space heating/cooling, and waste heat recovery. This study reviews PCM systems in residential building applications, with a focus on their major disadvantages and concludes with proposals for future development. Several disadvantages of PCM use in the given application have been identified and include; super cooling, low thermal conductivity, phase segregation, fire safety, and cost. The issues caused by super cooling and phase segregation lead to thermal cycling degradation, limiting the useful lifecycle of the material. These issues could limit their potential in building applications, which require systems of a long lifespan. Low thermal conductivities can slow down the rate at which heat is distributed or absorbed from the building, which affect the occupants comfort and as well as the efficiency of the system. Ideas based on the current research on ways to limit these disadvantages are included in the study. This study also identifies that further research is required on novel maintenance ways for the PCM systems after they have been installed. View Full-Text
Keywords: phase change materials; residential buildings; residential energy usage; design characteristics phase change materials; residential buildings; residential energy usage; design characteristics
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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

Bland, A.; Khzouz, M.; Statheros, T.; Gkanas, E.I. PCMs for Residential Building Applications: A Short Review Focused on Disadvantages and Proposals for Future Development. Buildings 2017, 7, 78.

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