NATURAL VENTILATION SYSTEM The Complete Solution - Gilberts ...

Mistrale Natural VentilationComponentsDepending on the ventilation strategy and the preferredlocation the installation may require a mix and match ofvarious standard Mistrale componentsIntake LouvreGilberts intake louvres provide a high weather efficiencydesign with only a standard single louvre bank arrangement.This slender robust but weather efficient and patenteddesign offers a much lower pressure resistance thanconventional double bank weather designs. This allows usto use smaller louvre areas for any given air requirementor in effect provide more air, size for size, as compared tocompetitive designs ensuring maximum design costefficiency. Structurally strong they can be fitted in toeither window openings or walls.Air Volume Control DamperClose control is one of the key factors for an effectivenatural ventilation system with the ability to regulate airflowsaccurately to meet occupancy levels and temperaturerequirements vital. The patented Gilberts volume controldamper is a unique design that is fully adjustable rangingfrom full open to full closed. When closed the damper hasan extremely low leakage rate that prevents draughts andinefficiencies.The casing is manufactured from low conductivity materialwhich prevents any cold bridge effect allowing total isolationfrom internal to external areas. Furthermore the dampercomprises a double insulated blade arrangement whichmeans that the damper has a very low ‘U’ value (whenclosed) of 1.6 w/m 2 ˚C, which is as good as a sealed doubleglazed window unit This prevents wasteful energy lossesor gains. The insulation also provides a secondary acousticreduction effect.Heating or Cooling CoilHeating coils add a wide degree of flexibility to the systemproviding not only for tempering of the air but also for someheating capacity to be employed within the design. Whenused to support heating the system air movement is actuallyaccelerated, resulting in a faster and more efficient heatingprocess as compared to pure radiator based systems alone.Alternatively cooling coils or dual purpose heating/coolingcoils can also be fitted to allow full control over air intaketemperatures.12