Smoke ventilation according to EN 12101-2 - D+H Mechatronic

Fire detection elementsElements that respond with a change in state when a fire parameter occurs or changes.Width-height ratioRatio of width to height in bottom hung, top hung, side-hung and dormer windows.CE markingBy affixing the CE marking, the manufacturer confirms that the product conforms to the applicable EC directives.For further information, go to: http://www.vdi-nachrichten.com/ce-richtlinien/basics/index.asp.Coefficient of discharge (Cv) (with side wind influence)Ratio of actual flow rate, measured under specified conditions, to the theoretical flow rate through the naturalsmoke and heat exhaust ventilator. The coefficient of discharge takes into account any obstructions in the naturalsmoke and heat exhaust ventilator such as controls, louvres, vanes and the influence of side winds.Coefficient of discharge (Cv0) (without side wind influence)Ratio of actual flow rate, measured under specified conditions, to the theoretical flow rate through the naturalsmoke and heat exhaust ventilator. The coefficient of discharge takes into account any obstructions in the naturalsmoke and heat exhaust ventilator such as controls, louvres, and vanes without the influence of side winds.Fire open positionTarget opening position of smoke and heat exhaust ventilators to be achieved and sustained while venting smokeand heat.Geometric area (Av)Opening area of a natural smoke and heat exhaust ventilator. Controls, louvres and other obstructions are nottaken into account.Geometric free areaSmallest cross sectional area of a ventilator through which flow occurs.Manual activationInitiation of the operation of a smoke and heat exhaust ventilator by a human action (e.g. by pressing a buttonor pulling a handle).46Section E