Dos años después de comenzar las obras en el distrito de Torrelago (Laguna de Duero, Valladolid) en el ámbito del proyecto europeo CITyFiED (RepliCable and InnovaTive Future Efficient Districts and cities), la implantación de las medidas de eficiencia energética elegidas ya son visibles. Este proyecto europeo, financiado por el VII PM, surgió con un doble objetivo: (i) Desarrollar una estrategia replicable, sistémica e integrada para transformar las ciudades europeas en ciudades inteligentes, basando las intervenciones en la reducción de la demanda de energía y las emisiones de gases de efecto invernadero, así como en el uso de fuentes de energía renovable: (ii) abordar la definición de nuevos modelos de negocio que permitan reproducir este tipo de estrategias en otros lugares de Europa para así acelerar las renovaciones de distritos hacia distritos de energía casi nula. El distrito de Torrelago El distrito de Torrelago en Laguna de Duero (Valladolid) está experimentando un cambio radical desde el punto de vista de la sostenibilidad energética. De los tres demostradores contemplados en el proyecto CITyFiED, el de Torrelago es el más grande con 1.488 viviendas y 140.000m2 de área condicionada. La Tabla 1 muestra los datos principales que lo caracterizan. Con una demanda energética inicial de 140 kWh/m2año, pretende reducir dicha demanda hasta lograr situarse en torno a los 86 kWh/m2año, con una contribución de energías renovables cercana al 57%. De esta forma, el ahorro energético será cercano al 39%. Two years after starting work in the district of Torrelago (Laguna de Duero, Valladolid) as part of Europe’s CITyFiED Project (RepliCable and InnovaTive Future Efficient Districts and cities), the implementation of its selected energy efficiency measures is already clear to see. Financed by the VII Framework Programme, its main objective is two-fold: (i) to deliver a replicable, systemic and integrated strategy that transforms European cities into smart cities, focusing on actions to reduce energy demand and GHG emissions as well as the increased use of renewable energy sources; (ii) to address the definition of new business models to implement such strategies in other parts of Europe and thereby accelerate the creation of near zero energy districts. The district of Torrelago The district of Torrelago in Laguna de Duero (Valladolid) is undergoing a radical change as regards urban sustainability. Of the three demo sites involved in the CITyFiED project, Torrelago is the largest with 1,488 dwellings and 140,000 m2 of retrofitting area. Table 1 sets out the key figures for the district. With an initial energy demand of 140 kWhm2/yr, the district aims to reduce this figure to around 86 kWhm2/yr, with a contribution from renewable energy sources of around 57%. This is expected to achieve an energy saving of some 39%. Initial situation The district comprises 31 12-storey buildings with 4 apartments per floor. The average size of each apartment is 100 m2. The district is divided into two phases: Phase 1, with 12 buildings, and Phase 2, with a total of 19. The Phase 1 buildings were constructed in 1977 and Phase 2 in 1981. The initial heating system was made up of two independent gas-fired networks, the first able to supply energy to the 12 apartment blocks in Phase 1 and the second for the remaining 19 buildings (Phase 2). The buildings’ envelopes were constructed almost four decades ago when insulation systems for the façades were practically non-existent. This has translated into continuous heat losses, low thermal and acoustic comfort, etc. Given this starting point, the main measures proposed within the scope Nº de edificios | No. of buildings 31 Nº de viviendas | No. of dwellings 1.488 | 1,488 Nº de residentes | No. of residents >4.000 | >4,000 Área condicionada (m2) | Retrofitting Area (m2) 140.000 m2 | 140,000 m2 Tabla 1 Datos del distrito de Torrelago | Table 1. Torrelago district main figures TORRELAGO: UN EJEMPLO DE RENOVACIÓN URBANA CON CRITERIOS DE SOSTENIBILIDAD CITYFIED, coordinado por el Centro Tecnológico CARTIF, y que aglutina a otros 20 socios con un objetivo común, está dotado con un presupuesto total de 46 M€, de los que 26 M€ están financiados por la Comisión. TORRELAGO: URBAN RENOVATION BASED ON SUSTAINABILITY CRITERIA The CITyFiED Project, coordinated by the CARTIF Technology Centre andwhich brings together a further 20 partnerswith a shared objective, enjoys a provision of €46mofwhich €26m is funded by the European Commission. FuturEnergy | Marzo March 2016 www.futurenergyweb.es 73 Rehabilitación Energética | Energy Refurbishment
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