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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

In honor of February being Heart Month, cardiologist Dr. Leslie Kasza joined Protect our Province BC’s Dr. Susan Kuo for a discussion on COVID-19’s impact on heart health and how you can reduce your risk. Don’t be fooled into thinking it won’t happen to you because you are _________, fill in the blank: young, healthy vaccinated and/or you only had a mild infection, etc.
A Protect Our Province BC 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? 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

More News from Protect Our Province BC

No lessons were learned. This year, despite the lessons that could have been learned and implemented, BC public health was as ill prepared as it was last year for the viral "respiratory season”. * And so on January 9, a new record number of hospital admissions was set at 10,345 . For more up to… Continue reading State of Public Health in BC
Second in a series of two posts by an Alberta mom. Find the first post here: No One Is Listening To Me Image: The Rona Lisa by Rosie Pidgeon, a young Belfast art student living with Long Covid.  To view her artwork, please visit @art_byrosie_ Alberta Long Covid Kids During the Delta wave in October… Continue reading No More Stolen Childhoods
Alberta Mom Photo: @BerlinBuyers My first confirmed Covid infection was in fall 2022 at a time when the few Covid protections we had left only applied to healthcare settings. I knew I was at higher risk of developing Long Covid as I am a working age woman. This terrified me as my son had already had… Continue reading No One is Listening to Me