Search results for "GREEN"
showing 10 items of 1660 documents
Green vs Traditional Roofs: Assessing their Actual Benefits through an Integrated Indicator Developed for Cool Roofs
2020
Green roofs have caught on in cities, mainly because contribute positively to thermal behaviour of buildings equipped with them. This paper investigates the applicability to these roofs of an integrated indicator, developed by Levinson and Akbari, to assess the contribution of cool roofs to buildings’ energy consumption. A building, assumed as the reference for the Italian medium size offices, was considered and its energy performance with and without the green roof was assessed. Different sites with different climatic conditions were considered for the simulations. First results indicate that such indicator does not seem to be completely transferable to green roofs.
Comparison Between Conventional and Vegetated Roof by Means of a Dynamic Simulation
2015
In this paper, a dynamic simulation of a building located in the Campus University of Palermo, Italy, has been carried out. We considered two different scenarios; in the first one, the building as it is, with a conventional covering, while in the second one the roof was equipped with a green roof. The results of the two simulations have been compared, suggesting that such building component could contribute to the energy savings of the building. However, it has to be considered as part of other possible actions devoted to improve the energy efficiency of the whole building. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND license (http://…
Enhancing values of roofs albedo for lowering cities’ air temperature and electric demand of buildings: a simple economic evaluation
2019
Abstract In cities vegetated roofs are becoming more popular because they can mitigate Urban Heat Island phenomena by decreasing the outdoor air temperature in summer. This decrease reduces the electric energy demand for climatization of buildings, which, in front of a milder climate, will recur less to mechanical tools for guaranteeing thermal comfort conditions to occupants. Cities can registered another indirect positive effect: the reduced cooling energy demand, limits the heat released by the climatization systems’ external unities toward the urban open spaces, thus lowering the outdoor air temperature. Therefore, the outdoor surface temperature of green, as well as cool roofs, can be …
A simple methodology for comparing cost-benefit of traditional, green and cool roofs
2019
Energy policy makers, architects and researchers, when designing new buildings or rehabilitating the existing ones, are engaged in the attempt of limiting the energy needs for climatization (NZEB buildings) and the environmental pressure exerted by buildings (EU Climate Action). The pursuit of this demanding assignment calls for innovative solutions in conceiving the building envelope and its energy systems. Recently, among the most effective tools for improving the energy and environmental performances of buildings, the technical interventions regarding the roofs are gaining a rising attention. Indeed, covers of buildings are responsible of a relevant part of their energy losses and, on th…
Combining pressure transducer and tipping bucket rain gauge to measure high variable runoff rate collected from a green roof
2018
Urban areas are constantly expanding in terms of space and density. It is known that the effect of urbanization is an increase of the area of impermeable surfaces. The infiltration decreases, the surface runoff increases (Baiamonte, Singh, 2017) and the existing stormwater infrastructure may become no more appropriate to face flooding (Berndtsson, 2010). Berndtsson (2010) described the numerous benefits that can be achieved by turning the roofs green through covering them with soil and vegetation. Green roofs i) reduce and attenuate stormwater runoff, which in turn lowers risks of urban floods and improves the urban water balance thus approaching the natural one (Mentens et al., 2006), ii) …
Multilayer blue-green roofs as nature-based solutions for water and thermal insulation management
2022
Abstract Green roofs have been widely recognized as sustainable nature-based solutions to mitigate floods in urban areas, which, in the last decades, are increasing due to the combination of intense worldwide urbanization and climate change. Besides flood mitigation, green roofs provide additional benefits for the urban environment (e.g., reducing the urban heat island and ensuring energy saving for the underneath building). Moreover, green roofs facilitate the increase of urban biodiversity, attracting different species of small animals, and upgrade the city aesthetic value. Among the different types of green roofs, multilayer blue-green roofs present an additional layer to store water dur…
Migrating ship waste management from India to Finland : analysis of opportunities and risks in an industrial symbiosis of sustainable ship recycling
2015
Environmental protection and social wellbeing are significant segments of economic development. Market demand, legal directives, competitor existence and NGO interest together influence to manufacture in a cleaner and safer way and to abandon the traditional, often lethal working processes. Ship breaking is one of the most perilous industries where powerful states subordinate those countries where regulations can be bypassed for profit maximization. The unfavorable dependence arises from economic and technological arrears, and it results in environmental pollution, human rights violation and non-conformity with environmental, health and safety regulations. To improve environmental, health a…
A hybrid zone of two deeply diverged green toad taxa in north-eastern Sicily.
2009
Towards greener transport policies in MetroManila
2013
Many cities in the world, including Greater Manila, are suffering from many ills linked to the dominant use of motor vehicles in daily mobility : air pollution, traffic congestion, accidents... We will present some of the measures implemented in Europe, especially France and Germany, to improve the quality of urban life through "green" transportation policies. Then we will have a look at some accomplishments in selected American and Asian cities like Japan, before suggesting some ideas on how to improve the situation in Manila through an adaptation of foreign successes to the specificities of the Philippines capital region.
Country trip. A casa di Roberto Collovà. Una conversazione / At Roberto Collovà’s house. A conversation
2010
Intervista integrale con Roberto Collovà, nella sua casa di Polizzi Generosa, come una possibile accezione di abitare "green" in campagna / Interview with ROberto Collovà. His house in Polizzi Generosa, as a possibility of country "greenlife"