Study of the Improvement on Energy Efficiency for a Building in the Mediterranean Area by the Installation of a Green Roof System

Elisa Peñalvo-López, Javier Cárcel-Carrasco, David Alfonso-Solar, Iván Valencia-Salazar and Elias Hurtado-Pérez
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Elisa Peñalvo-López: Universitat Politècnica de València, Camino de Vera 14, 46022 València, Spain
Javier Cárcel-Carrasco: Universitat Politècnica de València, Camino de Vera 14, 46022 València, Spain
David Alfonso-Solar: Universitat Politècnica de València, Camino de Vera 14, 46022 València, Spain
Iván Valencia-Salazar: Instituto Tecnológico de Veracruz, Miguel Ángel de Quevedo 2779, Veracruz 91897, Mexico
Elias Hurtado-Pérez: Universitat Politècnica de València, Camino de Vera 14, 46022 València, Spain

Energies, 2020, vol. 13, issue 5, 1-14

Abstract: Rooftop gardens ona building have proved to be a good way to improve its storm water management, but many other benefits can be obtained from the installation of these systems, such as reduction of energy consumption, decrease of the heat stress, abatement on CO 2 emissions, etc. In this paper, the effect from the presence of these rooftop gardens on abuilding’s energy consumption has been investigated by experimental campaigns using a green roof ona public building in a Mediterranean location in Spain. The obtained results demonstrate a substantial improvement by the installation of the green roof onthe building’s cooling energy demand for a standard summer day, in the order of 30%, and a reduction, about 15%, in the heating energy demand for a winter day. Thus, given the longer duration of the summer conditions along the year, a noticeable reduction on energy demand could be obtained. Simulation analysis, using commercial software TRNSYS code, previously calibrated using experimental data for typical summer and winter days, allows for the extrapolation to the entire year of these results deducing noticeable improvement in energy efficiency, in the order of 19%, but with an increase of 6% in the peak power during the winter period.

Keywords: green roofs; buildings; air conditioning; energy efficiency; mediterranean area (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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