We spend 90% of our lives indoors, and the role of the indoor climate in our well-being and well-being must therefore not be underestimated.
In Denmark, we have the most well-documented indoor climate. At ÅBN, we continuously seek to gather knowledge in areas such as CO2, indoor climate, humidity and more, with the clear aim of providing an overview of what, for example, CO2 and indoor climate are, what effect it has on us humans, as well as what rules and laws exist .
Danish schoolchildren spend 22% of their waking time at school and more than half a million Danish children and young people and around 50,000 employees spend a large part of their time at school (source: Realdania ).
More than 80% of the areas in Denmark's schools were built before 1982, when requirements for the degree of insulation were first introduced, and only 10% of the schools were built after 1995, when requirements for ventilation in the buildings were introduced (source: Realdania ).
It is therefore clear that the indoor climate is an incredibly important part of our lives, society and economy, and can influence to a greater extent than you think. Read below about the most essential indoor climate areas and how they affect your life.
The building regulations set a limit value of 1000 ppm for normal operation in schools and daycare centers as well as in offices
A sedentary, adult person produces around 17 l of CO2 per hour, while children i
the smallest classes will produce somewhat less.
53% of the classes that participated in the "Masseksperiment 2021" measured a CO2 value of over 1,000 ppm when they simply do as they usually do in relation to ventilation etc.
Studies from, among others, DTU have established that CO2 damages school pupils' concentration and learning ability. Children in classrooms with increased air supply do five to ten percent better than in normally stuffy classrooms.
DTU
When the CO2 level exceeds the recommended level of 1,000 ppm to 1,250 and 1,600 ppm respectively, students' ability to concentrate decreases by 5 and 10 per cent.
The CO2 level exceeds the Norwegian Working Environment Authority's limit value of 1,000 ppm over 3 hours per school day in the Danish classrooms.
Research on "sick building syndrome" (SBS) in office environments has documented that poor ventilation and high CO2 concentrations are associated with symptoms such as fatigue, headaches and difficulty concentrating. When CO2 levels exceed 800 ppm, people often notice a lack of fresh air, leading to fatigue and dissatisfaction.
This page is in constant development and we always try to contribute the latest knowledge in the field of indoor climate with simple 'Ind til benet' facts.
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