R. Kosonen, P. Mustakallio
Bibliographic info:
Healthy Buildings 2003 - Proceedings 7th International Conference (7th-11th December 2003) - National University of Singapore - Vol. 2, pp 776-781, 6 Fig., 1 Tab., 1 Ref.

The ventilated ceiling is a flexible solution for kitchen ventilation where the heat loads arerelatively low and aesthetics is a concern. The use of hoods is an ideal solution for locallyhandling contaminants produced in concentrated areas. Thus, special attention should betaken on the ventilated ceiling which removes air at the ceiling level. The simulationsconducted show that the capture jet improves the total effectiveness of the ventilated ceiling.Indoor air quality is enhanced in an energy efficient manner. The capture jet assists thefunction of the exhaust unit and the plume extracts effectively. Without the capture jet, aportion of the plume is re-circulated back to the working area. That increases theconcentration of the contaminant level in the occupied zone. The conducted simulationindicates that the average contaminant level of the whole occupied zone is 40% lower withthe capture jet.