The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate

Buildings portion in global energy consumption is 40%, and in the building envelope, the roof is a crucial point for improving indoor temperature, especially in the last and second last floors. Studies show that green roofs can be applied to moderate roof temperature and affect the indoor temperatur...

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Main Authors:	Mario Maiolo, Behrouz Pirouz, Roberto Bruno, Stefania Anna Palermo, Natale Arcuri, Patrizia Piro
Format:	Article
Language:	English
Published:	MDPI AG 2020-01-01
Series:	Sustainability
Subjects:	green roof sustainability heat flux building energy consumption roof temperature
Online Access:	https://www.mdpi.com/2071-1050/12/1/359

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spelling	doaj-e1eeb7bf1480441b85f7a13a0ae0ccc12020-11-25T00:33:36ZengMDPI AGSustainability2071-10502020-01-0112135910.3390/su12010359su12010359The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean ClimateMario Maiolo0Behrouz Pirouz1Roberto Bruno2Stefania Anna Palermo3Natale Arcuri4Patrizia Piro5Department of Environment Engineering and the Territory and Chemical Engineering, University of Calabria, 87036 Rende, ItalyDepartment of Mechanical, Energy and Management Engineering, University of Calabria, 87036 Rende, ItalyDepartment of Mechanical, Energy and Management Engineering, University of Calabria, 87036 Rende, ItalyDepartment of Civil Engineering, University of Calabria, 87036 Rende, ItalyDepartment of Mechanical, Energy and Management Engineering, University of Calabria, 87036 Rende, ItalyDepartment of Civil Engineering, University of Calabria, 87036 Rende, ItalyBuildings portion in global energy consumption is 40%, and in the building envelope, the roof is a crucial point for improving indoor temperature, especially in the last and second last floors. Studies show that green roofs can be applied to moderate roof temperature and affect the indoor temperature in summer and winter. However, the performance of green roofs depends on several parameters such as climate, irrigation, layer materials, and thickness. In this context, the present research deals with a comprehensive experimental analysis of different thermal impacts of green roofs in summer and winter in a Mediterranean climate. Measurements carried out in one year in three different types of green roofs with different thicknesses, layers, and with and without the insulation layer. The analysis determined the possible period that indoor cooling or heating might be required with and without green roofs and demonstrated the positive impact of green roofs in moderating the roof temperature and temperature fluctuations, which in summer was remarkable. In conclusion, since in the Mediterranean climate, the thermal differences between green roofs and conventional roofs in summer are much higher than winter, it seems that the green roof without an insulation layer would show better performance.https://www.mdpi.com/2071-1050/12/1/359green roofsustainabilityheat fluxbuilding energy consumptionroof temperature
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Mario Maiolo Behrouz Pirouz Roberto Bruno Stefania Anna Palermo Natale Arcuri Patrizia Piro
spellingShingle	Mario Maiolo Behrouz Pirouz Roberto Bruno Stefania Anna Palermo Natale Arcuri Patrizia Piro The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate Sustainability green roof sustainability heat flux building energy consumption roof temperature
author_facet	Mario Maiolo Behrouz Pirouz Roberto Bruno Stefania Anna Palermo Natale Arcuri Patrizia Piro
author_sort	Mario Maiolo
title	The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate
title_short	The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate
title_full	The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate
title_fullStr	The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate
title_full_unstemmed	The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate
title_sort	role of the extensive green roofs on decreasing building energy consumption in the mediterranean climate
publisher	MDPI AG
series	Sustainability
issn	2071-1050
publishDate	2020-01-01
description	Buildings portion in global energy consumption is 40%, and in the building envelope, the roof is a crucial point for improving indoor temperature, especially in the last and second last floors. Studies show that green roofs can be applied to moderate roof temperature and affect the indoor temperature in summer and winter. However, the performance of green roofs depends on several parameters such as climate, irrigation, layer materials, and thickness. In this context, the present research deals with a comprehensive experimental analysis of different thermal impacts of green roofs in summer and winter in a Mediterranean climate. Measurements carried out in one year in three different types of green roofs with different thicknesses, layers, and with and without the insulation layer. The analysis determined the possible period that indoor cooling or heating might be required with and without green roofs and demonstrated the positive impact of green roofs in moderating the roof temperature and temperature fluctuations, which in summer was remarkable. In conclusion, since in the Mediterranean climate, the thermal differences between green roofs and conventional roofs in summer are much higher than winter, it seems that the green roof without an insulation layer would show better performance.
topic	green roof sustainability heat flux building energy consumption roof temperature
url	https://www.mdpi.com/2071-1050/12/1/359
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The Role of the Extensive Green Roofs on Decreasing Building Energy Consumption in the Mediterranean Climate

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