Abstract
Urban rooftops are a potential source of water, energy, and food that contribute to make cities more resilient and sustainable. The use of smart technologies such as solar panels or cool roofs helps to reach energy and climate targets. This work presents a flexible methodology based on the use of geographical information systems that allow evaluating the potential use of roofs in a densely built-up context, estimating the roof areas that can be renovated or used to produce renewable energy. The methodology was applied to the case study of the city of Turin in Italy, a 3D roof model was designed, some scenarios were investigated, and priorities of interventions were established, taking into account the conditions of the urban landscape. The applicability of smart solutions was conducted as a support to the review of the Building Annex Energy Code of Turin, within the project ‘Re-Coding’, which aimed to update the current building code of the city. In addition, environmental, economic, and social impacts were assessed to identify the more effective energy efficiency measures. In the Turin context, using an insulated green roof, there was energy saving in consumption for heating up to 88 kWh/m2/year and for cooling of 10 kWh/m2/year, with a reduction in greenhouse gas emissions of 193 tCO2eq/MWh/year and 14 tCO2eq/MWh/year, respectively. This approach could be a significant support in the identification and promotion of energy efficiency solutions to exploit also renewable energy resources with low greenhouse gas emissions.
Highlights
This paper presents some of the results of the Re-Coding research project, undertaken by the Research Centre Future Urban Legacy Lab (FULL) in collaboration with the Responsible Risk ResilienceCentre (R3C) of Politecnico di Torino
Turin is located in the northwest of Italy, in the Po valley, and it is characterized by a temperate-continental climate, with cold winters and a shorter but hot summer
This paper presented the work carried out within the Re-Coding project, a multidisciplinary exploration carried out by FULL and R3C at the Polytechnic of Turin, in collaboration with the Municipality of Turin
Summary
This paper presents some of the results of the Re-Coding research project, undertaken by the Research Centre Future Urban Legacy Lab (FULL) in collaboration with the Responsible Risk ResilienceCentre (R3C) of Politecnico di Torino. Within the academic discourse, and in practice current tendencies of policies and regulation systems tend to focus on the need of environmental awareness with such approach This is the case, for example, of the cities of New York, with the OneNYC 2050 and Climate Mobilization Act, and of Marseille, with its regulatory planning and coding system, in which punctual actions are determined with simple rules to improve environmental performances. As [1] explained, the complexity of a regulation system might hinder the immediate understanding of the extent and impacts that such regulations have on the built environment, when the overlapping of well-intentioned regulations generated in different time frames result in out-of-date or ineffective rules For this reason, the Re-Coding project is aimed at redefining the rules starting by the analysis of ‘building elements’ as the interface between users (i.e., architects, private owners) and institutions. About 42 elements (i.e., windows, roof, external walls, and others) across scales have been identified and utilized as navigators to allow the mapping of current regulation systems
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