Influence of climate change on indoor air quality: Concept of IAQCC model

There is a need to quantitatively link indoor air quality (IAQ) and occupant well-being to climate change impacts. A new modelling system - Indoor Air Quality Climate Change (IAQCC) - thus is being developed. The IAQCC is a holistic model which combines different climate change scenarios and key indoor processes in the form of submodels. The model simulates indoor heat and moisture transport, indoor gas and particle pollutant concentrations, and mould growth risk, including key chemical-physical processes: outdoor transportation (penetration and ventilation), indoor materials and activities emissions, particle deposition and coagulation, gas reactions, and SVOC partitioning. Finally, the exposure model provides evaluations of indoor thermal comfort and exposure to pollutants. The estimated changes in indoor exposures due to climate change can serve as a basis for future policy decisions.