Effect of natural ventilation on indoor air quality and thermal comfort in dormitory during winter

This study is to prove that natural ventilation is necessary for students' sleeping even in Beijing's −9 °C winter and explain that opening windows at proper width will decrease the indoor temperature slightly, but obviously reduce the CO2 concentration. The indoor air quality in dormitories was monitored experimentally at different ventilation areas (from 0.011 m2 to 0.11 m2), and the thermal comfort and mental state of the students after 7 h...