Due to the current COVID-19 pandemic, guaranteeing thermal comfort and low CO 2 levels in classrooms through efficient ventilation has become vitally important. This study presents three-dimensional simulations based on computational fluid dynamics of airflow inside an air-conditioned classroom located in Veracruz, Mexico. The analysis included various positions of an air extractor, Reynolds numbers up to 3.5 × 10 4 , four different concentrations of pollutant sources, and three different times of the day. The simulations produced velocity, air temperature, and CO 2 concentrations fields, and we calculated average air temperatures, average CO 2 concentrations, and overall ventilation effectiveness. Our results revealed an optimal extractor position and Reynolds number conducive to thermal comfort and low CO 2 levels due to an adequate ventilation configuration. At high pollutant concentrations, it is necessary to reduce the number of students in the classroom to achieve safe CO 2 levels.
【저자키워드】 COVID-19, Ventilation, classroom, thermal comfort, CO2 reduction, turbulent convection, CFD simulations, 【초록키워드】 COVID-19 pandemic, Effectiveness, temperature, Concentration, Analysis, Safe, average, concentrations, produced, calculated, reduce, Reynolds number, 【제목키워드】 Comfort, thermal, Level,