|
Title:
|
Thermal assessment of extensive green roofs as passive tool for energy savings in buildings
|
|
Author:
|
Coma Arpón, Julià; Pérez Luque, Gabriel; Solé Cutrona, Cristian; Castell, Albert; Cabeza, Luisa F.
|
|
Notes:
|
Sustainability trends for buildings require new construction systems to foster energy efficiency and environmentally friendly buildings. Green roofs are interesting construction systems because they provide both aesthetic and environmental benefits. This paper continues a long-term research in order to evaluate and improve the thermal behaviour and sustainability of extensive green roofs. Simultaneously this research provides experimental data for specific Mediterranean continental climate conditions. The experiment consists in evaluating the energy consumption and thermal behaviour of three identical house-like cubicles located in Puigverd de Lleida (Spain), where the only difference is the roof construction system. The roof consists of a conventional flat roof with insulation in the reference case, while in the other two cubicles the insulation layer has been replaced by a 9 cm depth extensive green roof (comparing recycled rubber crumbs and pozzolana as drainage layer materials). The electrical energy consumption of a heat pump system was measured for each cubicle during 2012 and part of 2013. Both extensive green roof cubicles show less energy consumption (16.7% and 2.2%, respectively) than the reference one during warm periods, whereas both extensive green roof systems present a higher energy consumption (6.1% and 11.1%, respectively) compared to the reference cubicle during heating periods.
This work was partially funded by the Spanish Government (ENE2011-28269-C03-02 and ULLE10-4E-1305), in collaboration with the companies Gestión Medioambiental de Neumáticos S.L (Polígon Industrial Piverd s/n, Maials.) and Soprema and with the City Hall of Puigverd de Lleida. Moreover, the research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007–2013) under grant agreement n° PIRSES-GA-2013-610692 (INNOSTORAGE). The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2014 SGR 123). Julià Coma would like to thank the Departament d'Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya for his research fellowship. |
|
Subject(s):
|
-Extensive green roofs
-Energy efficiency
-Green building
-Recycled rubber crumbs |
|
Rights:
|
cc-by-nc-nd, (c) Elsevier, 2015
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
|
Document type:
|
article
acceptedVersion |
|
Published by:
|
Elsevier
|
|
Share:
|
|
