Lightweight dense/porous PCM-ceramic tiles for indoor temperature control
authors Novais, RM; Ascensao, G; Seabra, MP; Labrincha, JA
nationality International
journal ENERGY AND BUILDINGS
author keywords Ceramic tiles; Phase change material; Energy efficiency
keywords PHASE-CHANGE MATERIALS; THERMAL-ENERGY STORAGE; HEATING-SYSTEM; CO2 EMISSIONS; BUILDINGS; CONDUCTIVITY; FLOORS
abstract Currently the construction sector faces tremendous challenges due to the distressing levels of buildings energy consumption. One stimulating approach is the incorporation of phase change materials (PCMs), which have the ability to store and release energy. This innovative work reports the direct incorporation of PCM into lightweight ceramic tiles. Lightweight bi-layered tiles, produced using wood wastes as pore forming agent, were impregnated with PCM under vacuum. The influence of PCM content on the materials thermal performance was determined. Results show that these PCM-containing ceramic tiles reduce indoor space temperature variation (up to 22%) enhancing the thermal comfort inside buildings. The indoor temperature can be directly controlled by the PCM content, with higher content inducing lower temperature variations. Nevertheless, it was found that the PCM load affects the tiles' thermal conductivity (percolation occurring between 2.5 and 3.9 wt%), while its physical state induces only minor changes. The incorporation of 5.4 wt% PCM was found to be the optimal content, which is a rather small amount in comparison with alternative PCM-containing building solutions. The novel PCM-ceramic tiles show improved thermal performance, in comparison with conventional ceramic tiles, mitigating the energy consumption inside buildings by decreasing the operation time of cooling/heating devices. (C) 2015 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 0378-7788
year published 2015
volume 108
beginning page 205
ending page 214
digital object identifier (doi) 10.1016/j.enbuild.2015.09.019
web of science category Construction & Building Technology; Energy & Fuels; Engineering, Civil
subject category Construction & Building Technology; Energy & Fuels; Engineering
unique article identifier WOS:000365364500021
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  impact metrics
journal impact factor (jcr 2016): 4.067
5 year journal impact factor (jcr 2016): 4.599
category normalized journal impact factor percentile (jcr 2016): 89.809
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