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Pàgina inicial > Articles > Articles publicats > Towards productive cities : |
Data: | 2018 |
Resum: | Cities are rapidly growing and need to look for ways to optimize resource consumption. Metropolises are especially vulnerable in three main systems, often referred to as the FEW (i. e. , food, energy, and water) nexus. In this context, urban rooftops are underutilized areas that might be used for the production of these resources. We developed the Roof Mosaic approach, which combines life cycle assessment with two rooftop guidelines, to analyze the technical feasibility and environmental implications of producing food and energy, and harvesting rainwater on rooftops through different combinations at different scales. To illustrate, we apply the Roof Mosaic approach to a densely populated neighborhood in a Mediterranean city. The building-scale results show that integrating rainwater harvesting and food production would avoid relatively insignificant emissions (13. 9-18. 6 kg CO₂ eq/inhabitant/year) in the use stage, but their construction would have low environmental impacts. In contrast, the application of energy systems (photovoltaic or solar thermal systems) combined with rainwater harvesting could potentially avoid higher CO₂ eq emissions (177-196 kg CO₂ eq/inhabitant/year) but generate higher environmental burdens in the construction phase. When applied at the neighborhood scale, the approach can be optimized to meet between 7% and 50% of FEW demands and avoid up to 157 tons CO₂ eq/year. This approach is a useful guide to optimize the FEW nexus providing a range of options for the exploitation of rooftops at the local scale, which can aid cities in becoming self-sufficient, optimizing resources, and reducing CO2 eq emissions. |
Ajuts: | European Commission 653950 Ministerio de Economía y Competitividad MDM-2015-0552 Ministerio de Economía y Competitividad CTM2016-75772-C3-1-3-R Ministerio de Educación, Cultura y Deporte FPU16/03238 Ministerio de Educación, Cultura y Deporte FPU13/01273 |
Nota: | Unidad de excelencia María de Maeztu MdM-2015-0552 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Industrial ecology ; Life cycle assessment (LCA) ; Rainwater harvesting ; Resource self-sufficiency ; Solar energy ; Urban agriculture |
Publicat a: | Journal of industrial ecology, First published: 26 November 2018, ISSN 1088-1980 |
14 p, 1.6 MB |