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Licencia/License: Salvo indicación contraria, todos los contenidos de la edición electrónica de Informes de la Construcción se distribuyen bajo una licencia de uso y distribución Creative Commons Reconocimiento no Comercial 3.0. España (cc-by-nc).Cómo citar este artículo/Citation: García-Navarro, J., González-Díaz, M.J., Valdivieso, M. (2014). «Estudio Precost&e»: evaluación de los costes constructivos y consumos energéticos derivados de la calificación energética en un edificio de viviendas situado en Madrid. RESUMENEste artículo presenta un caso de estudio en el que, mediante la calificación energética, se relacionan la eficiencia energé-tica de un edificio, sus costes de construcción y sus consumos energéticos. La variación del comportamiento energético del edificio se realiza a través de cambios en la envolvente y los sistemas de producción de energía. El estudio es teórico y fue realizado en 2009-2010 sobre el proyecto de un edificio residencial de protección oficial situado en Madrid.El trabajo desarrolla una metodología que permite evaluar las variaciones de eficiencia energética en un proyecto y sus implicaciones económicas. Ello permitirá a promotores y arquitectos valorar cómo la adopción de medidas activas y pasivas afecta a la calificación energética de un edificio, a su consumo de energía y a los costes constructivos. Además se analiza la relación entre la orientación de las viviendas y la calificación energética, y las características de los programas utilizados.Palabras clave: Eficiencia energética; calificación energética; costes de construcción; impacto económico; arquitectura pasiva. ABSTRACT This paper presents a case study that relates the energy efficiency of a building, its construction costs and its energy consumption. The variation of the energy performance of the dwellings -and its energy rating-is made through changes in the envelope and the energy production systems. This theoretical study was conducted during the years 2009-2010 on the project of a residential block of apartments located in Madrid. The paper develops a methodology to evaluate the energy efficiency variations in a project and its economic implications. This will enable developers and architects to assess how the adoption of active and passive solutions affects the energy rating of a building, its energy consumption and its construction costs. The relationship between the orientation of housing and its energy rating, and the characteristics of the calculation programs used is also analyzed. Keywords

Ecocities can provide solutions for the improvement of human settlements around the world and the living conditions therein, but in the authors' experience, only as long as they are able to address the following questions correctly: How to formulate an ecocity concept that, considering issues of general concern, can be at the same time adapted to different local conditions? What are the instruments supporting the development and implementation of ecocity solutions? VTT's EcoCity concept for sustainable community and neighbourhood regeneration and development has been designed in response to the first question. Likewise, specific methodologies and effective facilitation processes and skills have been developed in response to the second question. Since the methodologies have been discussed in a previous scientific article, the present one focuses on the facilitation processes and skills, and also on other related, fundamental aspects like participation, adaptation, capacity building, etc. Facilitation processes supporting EcoCity development require matching "hard" and "soft" skills in a fluid way. The main findings are discussed with the help of two case studies: one in Medellín (Colombia), and the other one in Zambia.

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Abstract:The aim of the methodologies described here is to propose measures and procedures for developing concepts and technological solutions, which are adapted to the local conditions, to build sustainable communities in developing countries and emerging economies. These methodologies are linked to the EcoCity framework outlined by VTT Technical Research Centre of Finland Ltd. for sustainable community and neighbourhood regeneration and development. The framework is the result of a long experience in numerous EcoCity related projects, mainly Nordic and European in scope, which has been reformulated in recent years to respond to the local needs in the previously mentioned countries. There is also a particular emphasis on close collaboration with local partners and major stakeholders. In order to illustrate how these methodologies can support EcoCity concept development and implementation, results from a case study in Egypt will be discussed. The referred case study relates to the transformation of New Borg El Arab (NBC), near Alexandria, into an EcoCity. The viability of the idea was explored making use of different methodologies (Roadmap, Feasibility Study, and Residents Energy Survey and Building Consumption Assessment) and considering the Residential, Commercial/Public Facilities, Industrial, Services/Utilities, and Transport sectors.