Measuring the ventilation rate in a social house using the tracer gas method
DOI:
https://doi.org/10.46421/encac.v17i1.3815Keywords:
natural ventilation, tracer gas, Social housing, ventilation ratesAbstract
In a tropical country like Brazil, with a predominantly hot and humid climate, natural ventilation emerges as a viable strategy to improve the population's quality of life and comfort within buildings, without adversely impacting the environment. This bioclimatic approach also hinders the spread of infectious diseases, such as Covid-19, promoting healthy environments. However, this factor is often overlooked by designers during the conception phase of a building, particularly in Social Housing (SH) due to the challenge of predicting wind behavior and ensuring adequate ventilation. This study aimed to estimate natural ventilation rates in an SH model located in Londrina, Paraná. The tracer gas method was employed, using CO2 from a cylinder. Data collection was conducted using NDIR sensors, and the data were processed through two calculation methods: multipoint and 2-point. Three ventilation scenarios were analyzed, revealing significant variations in ventilation rates. The study concluded that the housing unit meets Brazilian regulatory criteria concerning the minimum opening area for ventilation and emphasizes the importance of incorporating natural ventilation in building design.
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