Green roof energy and water related performance in the Mediterranean climate
نویسندگان
چکیده
Performance of vegetated roofs are investigated in terms of their expected benefits for the building and the urban environment, due to their recognised energy and water management potential scores. A review of related worldwide experiences is reported for comparison purposes. The investigation is here performed within the specific climatic context of the Mediterranean region. Full-scale experimental results are provided from two case studies, located in north-west and central Italy, consisting in two fully monitored green roofs on top of public buildings. The attenuation of solar radiation through the vegetation layer is evaluated as well as the thermal insulation performance of the green roof structure. The daily heat flow through the roof surface is quantified showing that the green roof outperforms the reference roof, therefore reducing the daily energy demand. As for water management, it is confirmed that green roofs significantly mitigate storm water runoff generation e even in a Mediterranean climate e in terms of runoff volume reduction, peak attenuation and increase of concentration time, although reduced performance could be observed during high precipitation periods. 2010 Elsevier Ltd. All rights reserved.
منابع مشابه
Energy Saving due to Combination of Atriums and Green Roofs: Case of a College Dormitory under Different Climatic Conditions
In the present study, the effect of simultaneous utilizing of atrium and green roof on the energy consumption of a college dormitory has been evaluated under three different climatic conditions of Iran, including Tehran, Tabriz, and Bandar Abbas. Therefore, four different construction designs on the basis of using atrium and green roof has been considerd for a college dormitory. Results indicat...
متن کاملHydroponics Roofs for Saving Energy of Green Schools in the Cold and Dry climate of Iran: A Comparative Study between Two Broad and Modular Hydroponic Green Roofs
Green schools are a new type of school, in which the use of renewable energy is less than that of conventional schools. In this regard, nowadays, adding green layers to the roof of schools, in addition to increasing the Students' communication with nature, energy saving has improved in these spaces. However, to improve energy saving yield, the priority of these types of roofs in different clima...
متن کاملPerformance evaluation of green roofs in urban runoff reduction
Urbanism directly affects the hydrological cycle. One of the ways to manage runoffs in urban areas that is considered nowadays is green roof creation. Green roof is mainly created in humid and semi-humid areas, and efficiency of green roofs in arid and semi-arid areas has attracted less attention. In the current study, to evaluate the effect of green roof in arid and semi-arid to reduce runoff,...
متن کاملEffects of plant and substrate selection on thermal performance of green roofs during the summer
Green roof assemblies influence the total roof surface energy balance for a building. The energy balance for a green roof depends mostly on the selection of plants and substrates suitable for the building’s location. This study measured thermal properties of common green roof materials and selected two types of plants and substrates to simulate transient thermal performance of different green r...
متن کاملInvestigation of the Thermal Performance of Green Roof on a Mild Warm Climate
Global warming has become a threat of our time. It poses challenges to the existence of all biota on this earth and has made a clear impact on the level of energy and water consumption. No doubt, increase in the ambient temperature increases indoor and outdoor temperature level of the buildings which catalyzes the use of energy and cost intensive mechanical air-conditioning systems. Green roof ...
متن کامل