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REHVA: Indoor Air Quality and Thermal Environment in Classrooms with Different Ventilation Systems

This article presents the measurements of indoor climate in classrooms in the same school in Denmark. The classrooms had different ventilation systems: Ventilation was achieved either by manually operable windows, or by automatically operable windows with and without an exhaust fan in operation, or by a balanced mechanical ventilation system. Indoor air temperature and carbon dioxide (CO2) concentration, as well as opening of windows were continuously monitored for one month in the non-heating and heating seasons; measured CO2 concentration was used to estimate average classroom ventilation rates. The results show that mechanical ventilation and natural ventilation with automatically operable windows with exhaust fan performed notably better than the other systems. They indicate also that opening of windows was largely affected by customs and habits. Present results can be used as the basis for rational selection of systems that ensure adequate classroom ventilation.

Archived Briefings from Protect Our Province BC

A Protect Our Province BC panel discussion with A panel discussion about how we as a community can pull together to create a safer learning environment for kids when school starts again in September! We can avoid another ‘tripledemic’ if we work together! Ready for Fall 2023? video: Briefing video:
“COVID-19 vaccination is safe during pregnancy and may protect newborns from infection, especially if vaccines are given in the second or third trimester. This is similar to what we are already doing with other maternal vaccines, including TDaP and seasonal influenza.” – Dr. Eastabrook
“If we had an epidemic of people with broken limbs and we saw people in plasters and crutches, it would be more evident. But there is a lot of disability that is happening, which is a hidden disability often, which is why we need to talk about it more, for people to understand what the consequences are. And that will help to make better decisions.” - Lynette

More News from Protect Our Province BC

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