The influence of occupant behaviour on indoor air quality - a case study.

A balanced ventilation system with heat recovery was designed and installed into an 11 storey prefabricated block building. Monitoring of the system operation was accomplished during a year. Operational characteristics, quantified energy saving, indoor climate parameters and the effect of occupants' behaviour on those were determined and analysed. Temperature runs during durable window opening and cooking periods were monitored and on the basis of the results comparison between the new experimental and the traditional reference system was made. From the point of view of efficient ventilation, perfect effluent removal and energy saving operation the developed system proved to be better than the reference one. The need for the more detailed investigation of the occupants activities and their influences on the indoor air quality has also arisen. Finally proposals for some modifications and the wide utilization of the system were made.