Data di Pubblicazione:
2014
Abstract:
The paper describes the methodology followed for the development of new cool products in order to widen the range of existing solutions
both including coloured (even dark) materials and extending the application also to building vertical components. Cool coloured
ceramic tiles and acrylic paints for facades and roof membranes have been developed and tested at lab scale. Spectral reflectance measurements
have been performed demonstrating a significant improvement of reflectance in the Near InfraRed (NIR) range (up to +0.40)
while keeping dark colour and high absorbance in the visible. The development of new products has been also oriented to the improvement
of durability properties, being this aspect of relevance for high reflecting materials that have to keep their cooling properties over
the time. While ceramic tiles naturally offer superior resistance to outdoor ageing, a significant increase of biological growth resistance
has been achieved also for roof membranes by including ZnO nanoparticles. The approach followed by the authors aimed at delivering
products, that besides having higher NIR reflectance, were capable of satisfying industrial and market requirements being compatible
with standard manufacturing processes and offering additional functionalities. A complementary paper will be dedicated to the extensive
experimental and numerical evaluation of new materials’ thermal performances.
both including coloured (even dark) materials and extending the application also to building vertical components. Cool coloured
ceramic tiles and acrylic paints for facades and roof membranes have been developed and tested at lab scale. Spectral reflectance measurements
have been performed demonstrating a significant improvement of reflectance in the Near InfraRed (NIR) range (up to +0.40)
while keeping dark colour and high absorbance in the visible. The development of new products has been also oriented to the improvement
of durability properties, being this aspect of relevance for high reflecting materials that have to keep their cooling properties over
the time. While ceramic tiles naturally offer superior resistance to outdoor ageing, a significant increase of biological growth resistance
has been achieved also for roof membranes by including ZnO nanoparticles. The approach followed by the authors aimed at delivering
products, that besides having higher NIR reflectance, were capable of satisfying industrial and market requirements being compatible
with standard manufacturing processes and offering additional functionalities. A complementary paper will be dedicated to the extensive
experimental and numerical evaluation of new materials’ thermal performances.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Cool roof; Solar reflectance; Cool ceramics; Cool paint; Nanotechnology; Urban Heat Island
Elenco autori:
Revel, G. M.; Martarelli, Milena; Emiliani, M.; Gozalbo, A.; Orts, M. J.; Bengochea, M. A.; Delgado, L. G.; Gaki, A.; Katsiapi, A.; Taxiarchou, M.; Arabatzis, I.; Fasaki, I.; Hermanns, S.
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