A typical average activity level is 1,2 met
when designing ventilation for offices, schools, nursery, kindergartens etc.
Using an activity level of 1,2 met in this calculator follows the recommendations in Branchevejledning for indeklimaberegninger
(Danish sector guideline for indoor climate calculations) for sedentary office work and schools, but also for nursery and kindergartens.
The previous mentioned sector guideline recommends using an activity level of 1,6 met for children in nursery and kindergartens, but with a reduction of the amount of CO2
in the exhalation air for children corresponding to 45% of an adult person.
Only one activity level is required in this calculator to simplify the amount of input data. In this calculator the amount of CO2
in the exhalation air for children in nursery and kindergartens are set to 60% of an adult person. Using an activity level of 1,2 met with a reduction of the CO2
to 60% corresponds to the exact same amount of CO2
as recommended in the national sector guideline for 1,6 met and a reduction of the CO2
The following table lists various activity levels.
- Lying down
- Sitting, relaxed
- Standing, relaxed
- Sedentary work (office, school, laboratory)
- Standing work (shop, laboratory, light industry)
- Standing work
- Medium physical exercise (heavy work in industry, workshop)
- Walk (5 km/h)
- Running (9 km/h)
- Running (15 km/h)
- Elite sports performer
Statens Byggeforskningsinstitut, Aalborg Universitet, Branchevejledning for indeklimaberegninger, 2017 (DK).
By og Byg anvisning 202, Naturlig ventilation i erhvervsbygninger: beregning og dimensionering (DK).
CR 1752, Ventilation for buildings – Design criteria for the indoor environment.