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Title: Methodology for the study of the envelope airtightness of residential buildings in Spain: A case study
Authors: Feijó Muñoz, Jesús
Poza Casado, Irene
González Lezcano, Roberto Alonso
Pardal, Cristina
Echarri, Víctor
Assiego De Larriva, Rafael
Fernández Agüera, Jesica
Dios Viéitez, María Jesús,
Del Campo Díaz, Víctor José
Montesdeoca Calderín, Manuel 
Padilla Marcos, Miguel Ángel
Meiss, Alberto
UNESCO Clasification: 6201 Arquitectura
Keywords: Infiltrations
Airtightness of the envelope
Blower door test
Residential buildings
Issue Date: 2018
Journal: Energies (Basel) 
Abstract: 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.
ISSN: 1996-1073
DOI: 10.3390/en11040704
Source: Energies (Basel) [ISSN 1996-1073], v. 11 (4), 704, (Abril 2018)
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