“…In contrast to new constructions, several design variables are already defined in existing buildings, such as its placement and form, the position and dimension of openings, and internal layout. This task is even more complex when preserving the envelope's original characteristics is a concern, as in historical buildings (TURI et al, 2017) In the last 20 years, numerous studies have focused on passive strategies for existing buildings to reduce its energy consumption and the overheating effects in summer due to excessive thermal insulation. In projects such as IEA Annex 35 (INTERNATIONAL…, 2018a), Revival (GAUDIN; GAUDIN, 2006), School Vent Cool (ERACOBUILD, 2018, and IEA Annex 62 (INTERNATIONAL…, 2018b), hybrid ventilation emerges as one of the most efficient systems for different climatic contexts, since it combines all the best features of natural and mechanical ventilation to promote thermal comfort and indoor air quality throughout the year.…”