Finding F-1449

“Ventilation rates and air change rates were estimated from measured CO2 levels, for all dwellings calculated ventilation rate was less than 8 L/s/p, in 42% of cases calculated air change rate was less than 0.5 ach.”

Sharpe et al. Occupant Interactions and Effectiveness of Natural Ventilation Strategies in Contemporary New Housing in Scotland, UK (2015). International journal of environmental research and public health. Page 2. CKB 7014

Structure

Factor: Ventilation
Setting: bedroom
Study design: study of occupant interaction with natural ventilation in dwellings: carbon dioxide measured in bedrooms under different window and trickle ventilator settings, with ventilation rates and air change rates estimated from the measured carbon dioxide (class 4)
Effect: share-above 42 per 0.5 %
Caveat: the rates are calculated from carbon dioxide, not measured with a tracer gas

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.