Kitchen hoods play an essential role in the ventilation of kitchens. This paper describes activities carried out at the Belgian Building Research Institute with respect tothe determination of kitchen hood efficiencies. The linkwith European standardization is also described.
The paper presents a criterion to assess the performance of mechanical exhaust hoods for dome stic kitchens and a procedure to experimentally test them; an analysis of the relevant parameters which affect their performance is made, the test results are shown, and finally these are compared with the results of a numerical fluid dynamic code. Experiments were performed using the tracer gas technique, and attention has been drawn rather on the hood efficiency in the removal of pollutants than on the IAQ in the test room.
Air extraction in the kitchen is an essential element in all ventilation strategies for dwellings. This can be done by natural ventilation or mechanical extraction. In practice, the use of mechanical kitchen hoods is very common in Belgium. As part of a research carried out for the Belgian IWONL/JRSIA, the laboratory for Hygrothermics and Indoor Climate of BBRI carried out measurements to evaluate the efficiency of kitchen hoods. The test procedure applied at BBRI is a mix-up of two existing standards.
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