NATURAL VENTILATION SYSTEM The Complete Solution - Gilberts ...

Type 4 – Wind Driven TerminalAs well as Natural Ventilation Exhaust turrets we are ableto offer a complete range of wind powered terminals. Windpowered systems operate somewhat differently than stackeffect system and, as explained on page 2, they rely on thewind driving cool fresh air down into the building with thewarmer air exhausting both through buoyancy andincoming air pressure displacement. In order to create thisfeature the turret is fitted with specialised splitters thatprovide four separate air paths. Air is driven down into theoccupied zone through one or more of the airways and isthen exhausted through the remaining airways. The winddirection will determine which airways are used at anyparticular time.The turret is fitted to the roof using our standard installationsleeve with built in thermal barrier. This sleeve terminateswith a motorised volume control damper which allows theunit to fully open, close or modulate as demand requires.The damper is mounted on the sleeve outlet and can belinked in to the natural ventilation building managementsystem. The damper (see details on page 16) is ourpatented fully insulated design which provides a full thermalbarrier and a U value of 1.6w/m 2˚C.Type 5 – Wind Driven Terminal with Air DistributionPlenumThe Type 5 provides a wind powered terminal that features theexact same specification as the Type 4 but also includes a 4 waydistribution plenum at the base.The turret is fitted to the roof using our standard installationsleeve with built in thermal barrier. This sleeve terminates with amotorised volume control damper which allows the unit to fullyopen, close or modulate as demand requires. The damper ismounted on the sleeve outlet and can be linked in to the naturalventilation building management system. The damper (seedetails on page 16) is our patented fully insulated design whichagain provides a full thermal barrier with a U value of 1.6w/m 2˚C.The 4 way plenum fitted at the base allows for fitting of a varietyair grilles and diffusers.24