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Posts Tagged ‘did you know’

May 26, 2014

Did you know that…?

…replacing supply air filters had no effect on performance of children? But increasing the outdoor air supply rate did have an effect, so pollutants must originate indoors. Author David P. Wyon...

AUTHOR: Petra Vladykova Bednarova

May 25, 2014

Did you know that…?

…with natural ventilation 47% of classrooms in Swedish schools would have the CO2 above 1,000 ppm? Author David P. Wyon...

AUTHOR: Petra Vladykova Bednarova

May 24, 2014

Did you know that…?

…CO2 levels in classrooms are often above 1,000 ppm? And this poor air quality is a major disadvantage for children, and especially for slow workers. Author David P. Wyon...

AUTHOR: Petra Vladykova Bednarova

May 23, 2014

Did you know that…?

…doubling of the ventilation rate can increase the performance by 14.5%? Yet, if the air supply rate would be increased from 2.5-5 l/s to 10 l/s the performance of schoolwork…...

AUTHOR: Petra Vladykova Bednarova

May 22, 2014

Did you know that…?

…raising classroom temperature from 20°C to 30°C reduced most types of schoolwork performance by 30%? This means that temperature difference of +10°C would lead to 35% less schoolwork. Experimentally found…...

AUTHOR: Petra Vladykova Bednarova