Operation of a novel two-pipe active beam system in an office building: a thermal comfort study

This paper presents an investigation regarding a thermal comfort study carried out in an office building located in Jönköping, Sweden. The particularity is that, in authors’ knowledge, this is the first building equipped with a novel active beam system that operates a water loop with temperatures close to room temperature all year round.
Indoor climate parameters such as air temperature and air velocity were measured at four heights in two locations within the occupied zone of a room in the building. Two measuring campaigns were performed: one in winter and one in summer. Both experiments lasted for a continuous period of 24 hours.
The daily monitoring of the thermal environment showed that the room air temperature was between approximately 21 °C and 23 °C all year round. No significant vertical air temperature difference was noticed, and the draught rate was below 10% for most of the cases.