Experimental development and testing of low-cost scalable radiative cooling materials for building applications
dc.contributor.author | Carlosena Remírez, Laura | |
dc.contributor.author | Andueza Unanua, Angel María | |
dc.contributor.author | Torres, Luis | |
dc.contributor.author | Irulegi Garmendia, María Olatz | |
dc.contributor.author | Hernández Minguillón, Rufino Javier | |
dc.contributor.author | Sevilla, Joaquín | |
dc.contributor.author | Santamouris, Mattheos | |
dc.date.accessioned | 2021-11-09T11:33:01Z | |
dc.date.available | 2021-11-09T11:33:01Z | |
dc.date.issued | 2021-09-15 | |
dc.identifier.citation | Solar Energy Materials and Solar Cells 230 : (2021) // Article ID 111209 | es_ES |
dc.identifier.issn | 0927-0248 | |
dc.identifier.issn | 1879-3398 | |
dc.identifier.uri | http://hdl.handle.net/10810/53717 | |
dc.description.abstract | Urban overheating has a serious impact on building energy consumption. Daytime radiative cooling materials are an interesting passive solution for refrigeration. However, their costs and complex manufacturing hinder their current application. In this study, a series of scalable and lowcost daytime radiative cooling (DTRC) materials were designed, fabricated, and tested in a moderate climate (Cfb-Köppen-Geiger classification) and compared to aluminum and Vikuiti. The methodology was: i) material selection and design, (ii) optimization, (iii) fabrication, (iv) characterization, and (v) testing. The materials were fabricated using different substrates, aluminum and Vikuiti, and two kinds of formulations for the emissive layers based on silica-derived polymer polymethylsilsesquioxane (PMSQ) with embedded silica nanoparticles. The resulting aluminum DTRC materials had a mean solar reflectivity of 0.7 and 0.34 emissivity in the atmospheric window, the samples with Vikuiti had 0.97 and 0.89, respectively. During the experiment, the samples were exposed to different ambient conditions without a convection barrier and were contained in an extruded polystyrene board to eliminate conduction. The samples reached 7.32 °C and 9.13 °C maximum surface temperature reduction (below ambient) during the day and night, respectively. The samples with the commercial substrate achieved a mean reduction of 3.72 °C below ambient temperature. Although the aluminum samples did not achieve subambient cooling throughout the entire day, the emissive layer reduced the sample's surface temperature by an average of 1.7 °C. The PMSQ radiative cooling materials show great potential for future building applications. Suitability under different climates and experimental settings should be done to test broad applicability. | es_ES |
dc.description.sponsorship | The materials development in this research received a grant from the Government of Navarre "Convocatoria proyectos I + D 2019" file number 0011-1365-2019-000051; and financial support from Alonso Hernandez & asociados arquitectura, S. L. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | daytime radiative cooling | es_ES |
dc.subject | spectrally selective materials | es_ES |
dc.subject | scalable material development | es_ES |
dc.subject | subambient cooling | es_ES |
dc.subject | spray coating deposition | es_ES |
dc.subject | urban heat-island | es_ES |
dc.subject | ambient-temperature | es_ES |
dc.subject | surface | es_ES |
dc.subject | performance | es_ES |
dc.subject | association | es_ES |
dc.subject | coatings | es_ES |
dc.subject | impact | es_ES |
dc.subject | cities | es_ES |
dc.title | Experimental development and testing of low-cost scalable radiative cooling materials for building applications | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Elsevier has partnered with Copyright Clearance Center's RightsLink service to offer a variety of options for reusing this content. This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed. | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0927024821002518?via%3Dihub#! | es_ES |
dc.identifier.doi | 10.1016/j.solmat.2021.111209 | |
dc.departamentoes | Arquitectura | es_ES |
dc.departamentoeu | Arkitektura | es_ES |
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This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed.