Do green roofs really provide significant energy saving in a Mediterranean climate? Critical evaluation based on different case studies
| Autor: | Caterina Gargari, Carlo Bibbiani, Fabio Fantozzi, Giacomo Salvadori, Roberto Rugani |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Archeology
020209 energy Green roofMediterranean climateBuilding energy performanceDynamic energy simulationEnergy policy Green roof Dynamic energy simulation 02 engineering and technology 010501 environmental sciences NA1-9428 01 natural sciences Civil engineering Architecture 0202 electrical engineering electronic engineering information engineering Urban heat island Roof 0105 earth and related environmental sciences Consumption (economics) business.industry Building energy performance Building and Construction Albedo Urban Studies Air conditioning visual_art visual_art.visual_art_medium Environmental science Tile Mediterranean climate business Energy policy Efficient energy use |
| Zdroj: | Frontiers of Architectural Research, Vol 10, Iss 2, Pp 447-465 (2021) |
| ISSN: | 2095-2635 |
| DOI: | 10.1016/j.foar.2021.01.006 |
| Popis: | Green roofs represent a growing technology that is spreading increasingly and rapidly throughout the building sector. The latest national and international regulations are promoting their application for refurbishments and new buildings to increase the energy efficiency of the building stock. In recent years, vegetative coverings have been studied to demonstrate their multiple benefits, such as the reduction of the urban heat island phenomenon and the increase in the albedo of cities. On the contrary, this study aims to verify the actual benefit of applying a green roof on a sloped cover compared with installing a highly insulated tiled roof. The EnergyPlus tool has been used to perform dynamic analyses, which has allowed to understand the behavior of two different stratigraphies in accordance with weather conditions, rain, and irrigation profiles. Results have shown that the installation of a green roof cannot always be considered the best solution for reducing building energy consumption, especially if compared with a classic highly insulated clay tile roof. In terms of summer air conditioning, the maximum saving is 0.72 kWh/m2. The presence of water in the soil has also been proven a crucial factor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|