Advanced humidity control device for the prevention of mould.

The knowledge of IEA-Annex 14 'Condensation and Energy' has been applied to develop a new strategy for humidity control in dwellings. The presented control element assures safe prevention from mould growth at a minimum energy consumption. The advanced humidity control device consists of a surface temperature and an indoor air temperature sensor, from which readings a microcontroller evaluates the appropriate RH setpoint. A humidity sensor then reads the actual RH in the room air and compares it with the momentary setpoint. If the actual RH in the room exceeds the setpoint, a humidity reducing device (a fan, a dehumidifier etc.) can be activated to lower the humidity level in the room. The advanced humidity control device adapts individually to any building's prevailing boundary conditions (insulation quality, thermal bridging, room air temperature, moisture emissions with regard to occupant behaviour) in such a way, that no favourite conditions for the growth of mould occur.