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Energies 2018, 11(4), 704;

Methodology for the Study of the Envelope Airtightness of Residential Buildings in Spain: A Case Study

RG Architecture & Energy, Universidad de Valladolid; Valladolid 47014, Spain
Department of Architecture and Design, Universidad CEU San Pablo; Boadilla del Monte, Madrid 28668, Spain
Department of Architectural Technology, Universidad Politécnica de Cataluña; Barcelona 08028, Spain
Architectural Constructions Department, Universidad de Alicante; San Vicente del Raspeig, Alicante 03690, Spain
Art and Architecture Department, Universidad de Málaga; Málaga 29071, Spain
Instituto de Ciencias de la Construcción Eduardo Torroja, Consejo Superior de Investigaciones Científicas; Madrid 28033, Spain
Architectural Constructions Department, Universidade da Coruña; A Coruña 15008, Spain
Department of Thermal Engines and Machines, Universidad del País Vasco, UPV/EHU; Bilbao 48013, Spain
Architectural Constructions Department, Universidad de Las Palmas de Gran Canaria; Las Palmas de Gran Canaria 35017, Spain
Author to whom correspondence should be addressed.
Received: 2 February 2018 / Revised: 8 March 2018 / Accepted: 12 March 2018 / Published: 21 March 2018
(This article belongs to the Section Sustainable Energy)
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Air leakage and its impact on the energy performance of dwellings has been broadly studied in countries with cold climates in Europe, US, and Canada. However, there is a lack of knowledge in this field in Mediterranean countries. Current Spanish building regulations establish ventilation rates based on ideal airtight envelopes, causing problems of over-ventilation and substantial energy losses. The aim of this paper is to develop a methodology that allows the characterization of the envelope of the housing stock in Spain in order to adjust ventilation rates taking into consideration air leakage. A methodology that is easily applicable to other countries that consider studying the airtightness of the envelope and its energetic behaviour improvement is proposed. A statistical sampling method has been established to determine the dwellings to be tested, considering relevant variables concerning airtightness: climate zone, year of construction, and typology. The air leakage rate is determined using a standardized building pressurization technique according to European Standard EN 13829. A representative case study has been presented as an example of the implementation of the designed methodology and results are compared to preliminary values obtained from the database. View Full-Text
Keywords: infiltrations; airtightness of the envelope; blower door test; residential buildings infiltrations; airtightness of the envelope; blower door test; residential buildings

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Jesús, F.-M.; Irene, P.-C.; Roberto Alonso, G.-L.; Cristina, P.; Víctor, E.; Rafael, A.L.; Jesica, F.-A.; María Jesús, D.-V.; Víctor José, D.C.-D.; Manuel, M.C.; Miguel Ángel, P.-M.; Alberto, M. Methodology for the Study of the Envelope Airtightness of Residential Buildings in Spain: A Case Study. Energies 2018, 11, 704.

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