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Materials 2015, 8(2), 499-518; doi:10.3390/ma8020499

Development of Composite PCMs by Incorporation of Paraffin into Various Building Materials

1
Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China
2
Department of Civil Engineering, COMSATS Institute of Information Technology, Abbottabad Campus, Abbottabad 22010, Pakistan
3
Department of Civil and Environmental Engineering, School of Engineering, the Hong Kong University of Science and Technology, Hong Kong 999077, China
*
Author to whom correspondence should be addressed.
Academic Editor: Geminiano Mancusi
Received: 20 November 2014 / Revised: 20 January 2015 / Accepted: 29 January 2015 / Published: 5 February 2015
(This article belongs to the Section Energy Materials)
View Full-Text   |   Download PDF [1282 KB, uploaded 5 February 2015]   |  

Abstract

In this research, we focused on the development of composite phase-change materials (CPCMs) by incorporation of a paraffin through vacuum impregnation in widely used building materials (Kaolin and ground granulated blast-furnace slag (GGBS)). The composite PCMs were characterized using environmental scanning electron microscopy (ESEM), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) techniques. Moreover, thermal performance of cement paste composite PCM panels was evaluated using a self-designed heating system. Test results showed that the maximum percentage of paraffin retained by Kaolin and GGBS was found to be 18% and 9%, respectively. FT-IR results show that CPCMs are chemically compatible. The phase-change temperatures of CPCMs were in the human comfort zone, and they possessed considerable latent-heat storage capacity. TGA results showed that CPCMs are thermally stable, and they did not show any sign of degradation below 150 °C. From thermal cycling tests, it was revealed that the CPCMs are thermally reliable. Thermal performance tests showed that in comparison to the control room model, the room models prepared with CPCMs reduced both the temperature fluctuations and maximum indoor center temperature. Therefore, the prepared CPCMs have some potential in reducing peak loads in buildings when applied to building facade. View Full-Text
Keywords: building materials; latent-heat storage; composite phase-change material (CPCM); phase change materials; paraffin; Kaolin; ground granulated blast-furnace slag (GGBS) building materials; latent-heat storage; composite phase-change material (CPCM); phase change materials; paraffin; Kaolin; ground granulated blast-furnace slag (GGBS)
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

Memon, S.A.; Liao, W.; Yang, S.; Cui, H.; Shah, S.F.A. Development of Composite PCMs by Incorporation of Paraffin into Various Building Materials. Materials 2015, 8, 499-518.

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