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dc.contributor.authorVilà Miró, Roger
dc.contributor.authorMedrano Martorell, Marc
dc.contributor.authorCastell, Albert
dc.description.abstractRadiative cooling is a natural process to cool down surfaces through the rejection of thermal radiation using the outer space as a cold sink, taking advantage of the transparency of the atmospheric windows (8–14 µm), which partially matches the infrared radiation band. With the development of new materials that have a high reflectivity of solar radiation, daytime radiative cooling can be achieved. This phenomenon depends on the optical properties of the surface and the local weather conditions. In this research, climatological data from 1791 weather stations were used to present detailed nighttime and all-day radiative cooling maps for the potential implementation of radiative cooling-based technologies. The paper offers a parametric study of the variation of the potential as a result of decreasing the solar reflectivity. The results show that southern Europe is the region with the highest potential while northern Europe holds more hours of available radiative cooling. After varying the solar reflectivity from 1 to 0.5 the average power reduces from 60.18 to 45.32 W/m2 , and energy from 527.10 to 264.87 kWh/m2 ·year. For solar reflectivity lower than 0.5, all-day radiative coolers behave as nighttime radiative coolers, but power and energy values improve significantly for high values of solar reflectivity. Small variations of solar reflectivity have greater impacts on the potential at higher reflectivity values than at lower ones.ca_ES
dc.description.sponsorshipThis research was funded by the Catalan Government, grant number 2017 SGR 659, and by the Spanish government (Ministerio de Ciencia, Innovación y Universidades), grant number RTI2018-097669-A-I00ca_ES
dc.relation.isformatofReproducció del document publicat a
dc.relation.ispartofAtmosphere, 2021, vol. 12, núm. 9, 1119ca_ES
dc.rightscc-by (c) Roger Vilà, Marc Medrano, Albert Castell, 2021ca_ES
dc.subjectRadiative coolingca_ES
dc.subjectNighttime radiative coolingca_ES
dc.subjectDaytime radiative coolingca_ES
dc.subjectAll-day radiative coolingca_ES
dc.titleMapping Nighttime and All-Day Radiative Cooling Potential in Europe and the Influence of Solar Reflectivityca_ES

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cc-by (c) Roger Vilà, Marc Medrano, Albert Castell, 2021
Except where otherwise noted, this item's license is described as cc-by (c) Roger Vilà, Marc Medrano, Albert Castell, 2021