127630 20230921142939.0 doi 10.1016/j.jobe.2020.101231 sideral 117150 ART-2020-117150 eng Pérez-Bella, J.M. Universidad de Zaragoza (orcid)0000-0003-4278-6622 Improvement of a functional method to determine the design thermal transmittance of building façades. Implementation in southern Spain 2020 The thermo-hygrometric conditions to which construction materials are subjected cause their thermal performance to vary by location. These variations must be characterised in order to design building envelopes adjusted to the requirements of each situation, thus contributing to improve their energy efficiency under actual operating conditions. To this end, a functional calculation procedure that corrects the standardised thermal conductivity values of façade materials (¿-value) has been recently proposed; which considers the climatic characteristics of each location. This work proposes and validates improvements that, while preserving its functionality, overcome some limitations of the original procedure. To calculate more accurate corrections, the façade configuration and the climatic zones established by the building codes are also considered, allowing a more reliable characterisation of the design thermal transmittance of each building façade. By using climatic records gathered from 316 weather stations, a detailed isopleth map is also developed to present the applicable corrections for more than 250, 000 km2 of southern Spain. The largest ¿-value corrections are identified on the southeast coast and reach up to +6% in the summer months (with average annual corrections above +4%). This improved procedure can be extrapolated to any national building code that establishes constant values of thermal conductivity for façade materials and that defines thermal design requirements based on climatic zones. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/MICINN/PGC2018-098459-B-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 5.318 2020 ENGINEERING, CIVIL 13 / 136 = 0.096 2020 Q1 T1 CONSTRUCTION & BUILDING TECHNOLOGY 13 / 66 = 0.197 2020 Q1 T1 0.973 2020 Architecture 2020 Q1 Building and Construction 2020 Q1 Safety, Risk, Reliability and Quality 2020 Q1 Mechanics of Materials 2020 Q1 Civil and Structural Engineering 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Domínguez-Hernández, J. Universidad de Zaragoza (orcid)0000-0002-3776-9791 Cano-Suñén, E. Universidad de Zaragoza (orcid)0000-0001-5137-2478 Alonso-Martínez, M. del Coz-Díaz, J.J. 5004 510 Universidad de Zaragoza Dpto. Ingeniería Mecánica Area Ingeniería Construcción 30 (2020), 101231 [12 pp.] Journal of Building Engineering 2352-7102 8672039 http://zaguan.unizar.es/record/127630/files/texto_completo.pdf Postprint 1157504 http://zaguan.unizar.es/record/127630/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:127630 articulos driver 2023-09-21-13:01:24 ARTICLE