4. Conclusion
Cold selective materials are part of the passive cooling solutions for buildings, with performances that have been established for numerous case studies: limiting air-conditioning needs (particularly for poorly insulated buildings), limiting summer discomfort (in the case of non-air-conditioned buildings), and treating urban heat islands. The transition from exemplary operations to routine use in building design requires the development of labels and standards guaranteeing the radiative properties of products and their actual characteristics.
Some simplified standards, however, do not allow for the extent of innovations in cold selective products, such as cool colored products which can have a dark color, while achieving a relatively high albedo. What's more, thermal emissivity is generally not parameterizable in standard building thermal calculation tools, whereas...
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Conclusion
Bibliography
- (1) - YUAN (J.), FARNHAM (C.), EMURA (K.) - Development of a retro-reflective material as building coating and evaluation on albedo of urban canyons and building heat loads, - Energy and Buildings. 103 107-117 (2015). doi: https://doi.org/ .
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Websites
Heatwave – Risks – prevention of major risks
https://www.gouvernement.fr/risques/canicule
European Cool Roof Council (ECRC)
Cool Roof Rating Council (CRRC)
Standards and norms
- Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers - ASTM C1371-15 - 2015
- Standard Practice for Laboratory Soiling and Weathering of Roofing Materials to Simulate Effects of Natural Exposure on Solar Reflectance...
https://doi.org/10.1520/C1371-15 .
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