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oai:uvadoc.uva.es:10324/574162022-11-24T20:00:56Zcom_10324_1167com_10324_931com_10324_894col_10324_1238

Meiss Rodríguez, Alberto Padilla Marcos, Miguel Ángel Feijó Muñoz, Jesús 2022-11-24T12:09:52Z 2022-11-24T12:09:52Z 2017 Energies, 2017, vol. 10, n. 4, p. 456. https://uvadoc.uva.es/handle/10324/57416 10.3390/en10040456 456 4 Energies 10 1996-1073 Producción Científica The primary objective of this paper is to present the use of a steady model that is able to qualify and quantify available natural ventilation flows applied to the energy retrofitting of urban residential districts. In terms of air quality, natural ventilation presents more efficient solutions compared to active systems. This method combines numeric simulations, through the utilization of Ansys Fluent R15.0® and Engineering Equation Solver EES®, with on-site pressurization tests. Testing consists of the application of the seasonal pressure gradient on the building’s envelope and the calculation of the ventilation flows in three climatic representative conditions (summer, winter, and annual average). Through the implementation of this methodology to existing buildings it is possible to evaluate the influence of the built environment, as well as key parameters (relative height of the dwelling, number of vertical ventilation ducts, and airtightness of windows) of available natural ventilation. CITyFiED project, which has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration activities under the Grant Agreement number 609129 application/pdf eng MDPI info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2017 The Author(s) Atribución 4.0 Internacional Natural ventilation Building retrofit Indoor air quality Pressurization test 33 Ciencias Tecnológicas 6201 Arquitectura Methodology applied to the evaluation of natural ventilation in residential building retrofits: A case study info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.mdpi.com/1996-1073/10/4/456 SI