A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters
Urban environments can be turned greener and more sustainable by letting in vegetation. The application of green façades on buildings’ vertical surfaces is a viable option that brings various advantages. This study focuses on the energy benefit provided by an evergreen green façade in Mediterranean...
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Format: | Article |
Language: | English |
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PAGEPress Publications
2023-02-01
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Series: | Journal of Agricultural Engineering |
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Online Access: | https://www.agroengineering.org/index.php/jae/article/view/1520 |
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author | Fabiana Convertino Ileana Blanco Evelia Schettini Giuliano Vox |
author_facet | Fabiana Convertino Ileana Blanco Evelia Schettini Giuliano Vox |
author_sort | Fabiana Convertino |
collection | DOAJ |
description | Urban environments can be turned greener and more sustainable by letting in vegetation. The application of green façades on buildings’ vertical surfaces is a viable option that brings various advantages. This study focuses on the energy benefit provided by an evergreen green façade in Mediterranean climate conditions. The results came from a long experimental campaign, heat fluxes evaluation and statistical analyses. The thermal behaviour of the experimental green façade was analysed all year round, highlighting differences between warm and cold periods and between time of the day. The main advantage was assessed in terms of energy saving, defined as heat flux reduction through the wall covered with vegetation in comparison with an unvegetated wall. The study pointed out that energy saving was achieved throughout the year, but in different time of the day based on the season. A daytime energy saving was obtained in warm periods due to the shading effect and the plants evapotranspiration. A night-time benefit was reached in cold periods mainly thanks to the thermal and wind barrier action of the green layer. The results showed daily mean values of energy saving equal to 11.47 W m-2 for a warm period and to 3.23 W m-2 for a cold period. The statistical analysis highlighted that the energy saving was positively influenced by external air temperature especially at daytime. Overall, higher energy saving was provided by the green façade when higher external air temperature values were recorded. This research contributes to fill existing literature gaps on the yearly behaviour of green façades and on the energy benefits these provide.
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first_indexed | 2024-04-10T09:18:45Z |
format | Article |
id | doaj.art-63569dd057204e7da4b1605f11698449 |
institution | Directory Open Access Journal |
issn | 1974-7071 2239-6268 |
language | English |
last_indexed | 2024-04-10T09:18:45Z |
publishDate | 2023-02-01 |
publisher | PAGEPress Publications |
record_format | Article |
series | Journal of Agricultural Engineering |
spelling | doaj.art-63569dd057204e7da4b1605f116984492023-02-20T17:42:28ZengPAGEPress PublicationsJournal of Agricultural Engineering1974-70712239-62682023-02-0110.4081/jae.2023.1520A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parametersFabiana Convertino0Ileana Blanco1Evelia Schettini2Giuliano Vox3Department of Agricultural and Environmental Science DISAAT, University of BariDepartment of Biological and Environmental Sciences and Technologies DiSTeBA, University of Salento, LecceDepartment of Agricultural and Environmental Science DISAAT, University of BariDepartment of Agricultural and Environmental Science DISAAT, University of BariUrban environments can be turned greener and more sustainable by letting in vegetation. The application of green façades on buildings’ vertical surfaces is a viable option that brings various advantages. This study focuses on the energy benefit provided by an evergreen green façade in Mediterranean climate conditions. The results came from a long experimental campaign, heat fluxes evaluation and statistical analyses. The thermal behaviour of the experimental green façade was analysed all year round, highlighting differences between warm and cold periods and between time of the day. The main advantage was assessed in terms of energy saving, defined as heat flux reduction through the wall covered with vegetation in comparison with an unvegetated wall. The study pointed out that energy saving was achieved throughout the year, but in different time of the day based on the season. A daytime energy saving was obtained in warm periods due to the shading effect and the plants evapotranspiration. A night-time benefit was reached in cold periods mainly thanks to the thermal and wind barrier action of the green layer. The results showed daily mean values of energy saving equal to 11.47 W m-2 for a warm period and to 3.23 W m-2 for a cold period. The statistical analysis highlighted that the energy saving was positively influenced by external air temperature especially at daytime. Overall, higher energy saving was provided by the green façade when higher external air temperature values were recorded. This research contributes to fill existing literature gaps on the yearly behaviour of green façades and on the energy benefits these provide. https://www.agroengineering.org/index.php/jae/article/view/1520Building envelopegreen façadesustainable urban developmentpassive designthermal screensolar shading. |
spellingShingle | Fabiana Convertino Ileana Blanco Evelia Schettini Giuliano Vox A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters Journal of Agricultural Engineering Building envelope green façade sustainable urban development passive design thermal screen solar shading. |
title | A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters |
title_full | A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters |
title_fullStr | A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters |
title_full_unstemmed | A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters |
title_short | A nature-based system for improving Mediterranean buildings’ performance: contribution to energy saving by heat transfer reduction and influence of climatic parameters |
title_sort | nature based system for improving mediterranean buildings performance contribution to energy saving by heat transfer reduction and influence of climatic parameters |
topic | Building envelope green façade sustainable urban development passive design thermal screen solar shading. |
url | https://www.agroengineering.org/index.php/jae/article/view/1520 |
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