Practical experiences with IR controlled supply terminals in dwellings and offices.

Ventilation is necessary to provide a good indoor air quality to occupants in office buildings but is however a major energy consumer. In that manner, ventilation in itself can contribute to much more than 50% of the energy consumption for heating in well insulated office buildings. Likewise, the general trend in standards to augment ventilation requirements would still increase its energy costs. Thus, it seems obvious that an intelligent control of ventilation in office building allows to obtain substantial reductions of energy consumption. To a certain extent this is also true for dwellings even if in general ventilation represents a smaller contribution to the energy consumption for heating than in office buildings. In this connection, it should be noted that the increasing requirements regarding insulation of dwellings has for effect to augment this proportion. Demand controlled ventilation in dwellings appears therefore also as an interesting way to achieve energy consumption reduction. This paper presents experiments that were performed in two different environment but are both related to IR control ventilation.