installation de ventilation par dépression

CONT: On distingue (...) deux sortes d'installations de ventilation (...) celle soufflant de l'air neuf dans les locaux (...) et celle aspirant l'air des locaux et dénommée ""ventilation par dépression"".

CONT: Extract System ... To ensure efficiency of the fume cupboards and to create a safe, noise tolerant environment for the operator it is necessary to design a well constructed and fail-safe extraction system which incorporated quiet yet powerful fans ... The Clean Air fume extract systems are custom made in-house for each individual site.
CONT: The pagula ventilated ceiling system forms an important part of a total balanced mechanical ventilation system. It is particularly suitable for ventilating rooms with high steam and latent heat Generation, such as kitchens. The design of the pagula system ensures that draught free whole room ventilation is provided with efficient grease and moisture separation on the extract to keep the ceiling plenum and extract system clean. The pagula system is a complete integrated false ceiling providing air inlet grilles, air exhaust passages with grease and moisture separation, and a ventilated lighting system.