Experimental development and testing of low-cost scalable radiative cooling materials for building applications
| العنوان: | Experimental development and testing of low-cost scalable radiative cooling materials for building applications |
|---|---|
| المؤلفون: | Rufino Javier Hernández-Minguillón, J. Sevilla, Laura Carlosena, Mattheos Santamouris, Luis Torres, Olatz Irulegi, Angel Andueza |
| المساهمون: | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISC - Institute of Smart Cities, Universidad Pública de Navarra. Departamento de Ingeniería, Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Nafarroako Unibertsitate Publikoa. Ingeniaritza Saila, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko, Elektroniko eta Telekomunikazio Saila, Gobierno de Navarra / Nafarroako Gobernua |
| المصدر: | Addi. Archivo Digital para la Docencia y la Investigación instname Academica-e. Repositorio Institucional de la Universidad Pública de Navarra |
| بيانات النشر: | Elsevier, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Architectural engineering, Radiative cooling, 02 engineering and technology, coatings, 010402 general chemistry, 01 natural sciences, urban heat-island, cities, surface, Urban heat island, ambient-temperature, Government, Renewable Energy, Sustainability and the Environment, scalable material development, association, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, daytime radiative cooling, spectrally selective materials, spray coating deposition, Scalability, impact, Business, 0210 nano-technology, subambient cooling, performance |
| الوصف: | 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. 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. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9947f467ad30ce2e500f2bc819618848 http://hdl.handle.net/10810/53717 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9947f467ad30ce2e500f2bc819618848 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |