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

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1.3. Approach1.3.1. Determining the geometric opening area A vfor a windowThe geometric opening area is calculated by multiplying the vent outer dimension width and the vent outerdimension height, in each case deducting the clearance width or height (∆ w and ∆ h):A v= clear width (RLB) × clear height (RLH)A v= (W CM– 2 ∆ w) × (H FRZK– 2 ∆ h)A v= (1200 – 60) × (3280 – 60)A v= 1140 × 3220A v= 3.67 m²1.3.2. Determining the width/height ratio of a casementThe width-height ratio is calculated from the ratio of clear width and clear height:W/H = clear width (RLB): clear height (RLH)W/H = 1 140: 3 220W/H = 0.351.3.3. Determining the opening angleThe opening angle is read off the following graph as a function of the stroke and the height. The values displayedon this graph are based on a simple sine trigonometric function. The graph is universally applicable across allsystems:Ratio of the opening angle to the height dependent on the strokeSash height Fh [mm]Stroke 800Opening angle [DEG]Stroke 300Stroke 1100Stroke 400Stroke 1200Stroke 500Stroke 1300Stroke 600 Stroke 700 Stroke 800 Stroke 900Stroke 1400Stroke 100034TeilSectionAA
In this sample calculation, an opening angle of 37° is calculated at a vent height of 1,600 mm and a stroke of1,000 mm.1.3.4. dEtErMInInG tHE coEffIcIEnt of dIScHArGE cVusing the width-height ratio determined under 1.3.2., the coefficient of discharge cv required for the next calculationcan now be read off the corresponding table for the system:At a width-height ratio of 0.35 and an opening angle of 35°, the coefficient of discharge cv is 0.46. As the openingangle of 37° calculated in 1.3.3. and the associated cv value are not yet reached, the next lowest openingangle must be applied. (the cv values can easily become worse as the width-height ratio increases and at lowopening angles from the influence of jambs and latches.)In general: the lower the width-height ratio, the better the cv value. the tables used to determine the openingangle per series are provided in the “technical Information” part of the d+H Euro-SHEV system module.1.3.5. dEtErMInInG tHE AErodynAMIc frEE oPEnInG ArEA for An nSHEVthe aerodynamic free opening area for a window/nSHEV is calculated by multiplying the geometric opening areaA vcalculated in 1.3.1. with the coefficient of discharge cv from 1.3.3.:A a= A v× cvA a= 3.67 m² × 0.46A a= 1.68 m²/nSHEV1.3.6. dEtErMInInG tHE nuMBEr of WIndoWS rEquIrEd for tHIS SMoKE SEctIonIn this sample calculation, it is assumed the windows are the same. If windows are different, this calculation mustbe repeated per window. the sum of the aerodynamic free opening area of the individual windows then providesthe value for the total smoke extraction area.A a target total: A a= number of windows required for this smoke section3.00 m²: 1.68 m² = 21.4. rESulttwo dual single flaps are required to achieve the aerodynamic total smoke extraction cross section for this smokesection at a stroke of 1,000 mm and a unit size of 1,200 × 3,280 mm.Section B35
Page 3: IntroductionSince September 2006, a
Page 6 and 7: Table of ContentsIntroduction .....
Page 10 and 11: 1 The EN 12101 series of standards
Page 12 and 13: 1.1.1. Facade exhaust system (verti
Page 14 and 15: 1.2.3. Dual single flap when instal
Page 16 and 17: 1.4. Determining the aerodynamic fr
Page 18 and 19: As these two options are not really
Page 20 and 21: 2.1.4. Testing the wind load WLThe
Page 22 and 23: clEAr GEoMEtrIc ArEAA v= clear widt
Page 25 and 26: 2.2. Initial inspection of factory
Page 27 and 28: 2.4. Marking an NSHEV in accordance
Page 29 and 30: 2.5. Declaration of ConformityIn th
Page 31 and 32: Federal StateSmoke ventilationwhen?
Page 33: BCalculation aidsThis section is di
Page 37 and 38: 2.3.2. dEtErMInInG tHE WIdtH/HEIGHt
Page 39 and 40: CInformation about D+H drives and b
Page 41 and 42: NSHEV in the vertical facadeType of
Page 43 and 44: 2 D+H bracket setsD+H Mechatronic A
Page 45 and 46: ETerms and abbreviations1 Explanati
Page 47 and 48: Aspect ratioRatio of length to widt
Page 49: Symbol/abbreviationParameter / desc

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

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