Development and validation of a visual ventilation guiding device (VVGD) for use in dwellings and schools

A well adjusted ventilation is useful to save heating energy with regard to hygienic aspects or aspects of building materials maintenance.For that study, a simple device was developed with the VVGD, it aims at helping housing users to perform a sensible ventilation behavior based on reliable sensor data. During the field test, a total of 35 VVGDs were installed with 19 test users.The sensors output their signals to a display unit similar to a traffic light. The user learns an optimal ventilation behavior : to open windows at poor air quality and to close them in time to prevent excess loss of energy.