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the new generation of scalable urban HEat isLand mitigatIOn by means of adaptive photoluminescent radiative cooling Skins

Project description

The resilient urban ‘skin’ of the future

Urban heat islands are areas that display increased warmth due to anthropogenic activity. Such areas significantly impact well-being, increasing the need for solutions. Passive cooling methods use design choices to maximise the comfort and health of building users while minimising energy use. These methods have been shown to slowly mitigate urban heat islands. The EU-funded HELIOS project aims to develop novel solutions capable of producing passive cooling without the use of energy while exploiting characteristics of urbanised surfaces, from buildings to outdoor spaces. The project’s goal is to create innovative materials that will act as a ‘skin,’ capable of constituting a sort of surface film that reduces the effects of urban heat islands.

Objective

From their early origins urbanization has produced both benefits and penalties due to the generated anthropogenic stress. Documented overheating such as urban heat island (UHI) compromises human wellbeing in cities, where 60% of the world population lives and is exposed to the related health risks and vulnerability. An urgent solution is much needed here and now, since classic passive cooling techniques showed to slowly mitigate UHI. A disruptive improvement must be dedicated to eradicate the problem by conducting a ground-breaking multidimensional and multidisciplinary research. That is the key motivation of HELIOS, which aims at holistically developing the resilient urban skin of the future. This skin will take advantage of the combination of successful radiative cooling in the atmospheric window(8-13μm) and high solar reflectance integrated for the first time to photoluminescence in the short wave(0.25-2.8μm) thanks to the breakthrough lead-free halide perovskites. HELIOS will develop novel radiative cooling structures into temperature responsive carriers (eg phase change-oxides, thermonastic shape-memory alloys) and albedo adaptive photoluminescent finishing, with the twofold purpose to tailor radiative supercooling performance enough to minimize winter penalties and to give the desired colour finishing, finally allowing the sustainable upscaling of this research frontier. This approach would radically change the building physics paradigm, with the ambition of rethinking built environment into a fully-dynamic resilience, as only Nature can do. HELIOS will indeed analytically and experimentally identify the thermal-radiative physics of such skin, assessing its performance for indoor-outdoor human comfort and energy-efficiency. HELIOS bio-inspired radiative and photoluminescent skin will be indeed tailored and optimized for each dynamic boundary, as demonstrated through a disruptive building physics experimentally-validated balance and urban canopy model worldwide.

Host institution

UNIVERSITA DEGLI STUDI DI PERUGIA
Net EU contribution
€ 1 498 125,00
Address
PIAZZA DELL UNIVERSITA 1
06123 Perugia
Italy

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Region
Centro (IT) Umbria Perugia
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 1 498 125,00

Beneficiaries (1)