Suchergebnisse

Green roofs are considered structural components that act as an insulating layer for buildings. Among the factors that influence the choice of this type of horizontal green there are: the geographical location, the climate, and the need to improve the thermal insulation of the flat roof. Some types of layouts are proposed for the sustainable construction of green roofs. In addiction the structural and vegetation components suitable for the realization of green roofs are also described. The energy performance of an experimental green roof prototype located at the ENEA Casaccia Research Center shown that the horizontal green layer improves the thermal insulation of the flat roof by over 40%.

The use of a passive dissipation system on a building reduces energy consumption and improves energy efficiency. This technology is important considering that in the EU more than 40% of primary energy consumption for heating and cooling derive by the construction sector. This article reports the effects of a green wall, spaced 60 cm from the building wall, placed on a demonstration building at the ENEA Casaccia Research Center. The values of global solar radiation parameters, wall surface temperature, relative humidity inside and outside the interspace between the green wall and the building were detected. The results show that plant greening on the building reduces heat flux into the building, by reducing air temperature of building wall, especially in summer.

Growing urbanization is associated with the emergence of environmental problems, such as the reduction of natural resources, the atmosphere pollution and the increase of the heat islands phenomenon in cities. The integration of vegetation in the urban areas, through the creation of green hanging systems, represents a possible solution to improve the energy sustainability of buildings, to combat meteoric excesses, to improve stormwater management and to reduce pollutant levels. These energy and environmental benefits are related to the properties of evapotranspiration, shading and thermal insulation of the vegetation. The work reports the results of the main studies concerning the use of hanging systems to counter environmental impacts and improve the energy efficiency of buildings.