Operations on windows and external doors in UK primary schools and their effects on indoor environmental quality

This study provides a comprehensive analysis of the predictors influencing operations on windows and external doors as well their impact IEQ, comfort energy. The was carried out in 31 naturally ventilated classrooms eight primary schools UK during non-heating heating seasons. state collected by time-lapse cameras visual observations. Environmental variables impacting window were recorded at 10-min intervals. Correlational tests predictive regression models used to identify how open area (m2) affected environmental predictors. Results show that operative outdoor temperature season indoor humidity main (m2). driver for operation occupancy patterns, however, period they stayed dependent temperature. doors' decreased after 40 min, its CO2 level only noticeable up 30 min. Through opening more available windows, (34% time) levels (28% could be reduced season. Furthermore, energy waste avoided 67% time reducing set-point training school occupants when operate windows. suggests several avenues improve controls’