Janssens A., De Paepe M.
Bibliographic info:
26th AIVC Conference "Ventilation in relation to the energy performance of buildings", Brussels, Belgium, 21-23 September 2005

This paper investigates the sensitivity of indoor humidity models to the numerical description of water vapour buffering in porous materials in the room. Three different numerical models are compared: a lumped capacity model, which lumps the moisture inertia in a single capacity for the room, a two-node model, which differentiates between the room air humidity and the representative humidity of an equivalent humidity buffering material, and finally a room-wall model, which describes the water vapour transfer and storage in the building fabric through a continuum model.