SIST EN 13030:2001
(Main)Ventilation for buildings - Terminals - Performance testing of louvres subjected to simulated rain
Ventilation for buildings - Terminals - Performance testing of louvres subjected to simulated rain
This European Standard specifies a method for measuring the water rejection performance of louvres subject to simulated rain and wind pressures, both with and without air flow through the louvre under test. For the purpose of tests in this standard, a 1000 mm ´ 1000 mm section of weather louvre or the nearest possible blade increment is considered.
Weather louvres are designed to restrict the passage of water during rainfall while allowing the passage of air into or from an air distribution system or part of a building. They are used in a wide range of applications, where there may be differences in wind speed and direction, levels of local turbulence, rate and droplet size, distribution of rainfall and surface water flow from the surrounding structure. It is impractical to consider a standard test procedure simulating the whole range of likely conditions, but this standard provides for heavy rainfall directed on to the louvre surface, with simulated wind pressures. This provides a common basis on which to compare the water rejection performance of weather louvres of different designs. This standard is not intended for the evaluation of weather performance of pressure relief dampers.
The purpose of tests incorporated in this European Standard is as follows:
a) Weather tests
To establish the weather louvre effectiveness when subjected to wind pressure at various air flow rates.
b) Discharge and Entry loss coefficient/Pressure requirements
To establish the air pressure loss through the weather louvre at various air flow rates and by calculation the Discharge and Entry Loss Coefficient.
Lüftung von Gebäuden - Endgeräte - Leistungsprüfung von Wetterschutzblenden bei Beanspruchung durch Beregnung
Diese Europäische Norm legt ein Messverfahren für die Leistungsfähigkeit von wasserabweisenden Wetterschutzblenden fest, bei Beanspruchung mit Beregnung und Winddrücken, sowohl mit als auch ohne Luftströmung an der zu prüfenden Wetterschutzblende. Für die in dieser Norm beschriebenen Prüfungen werden ein Wetterschutzblenden-Abschnitt mit den Maßen 1 000 mm ´ 1 000 mm oder die nächstgrößere Lamelle berücksichtigt.
Wetterschutzblenden sind so ausgelegt, dass sie bei Regen das Eindringen von Wasser beschränken, jedoch den Durchgang von Luft in eine oder aus einer Luftverteilungsanlage bzw. einen Teil eines Gebäudes zulassen. Ihr Einsatz erfolgt in vielen Anwendungsfällen, in denen Unterschiede der Windrichtung und -geschwindigkeit, örtliche Turbulenzen, Tröpfchengeschwindigkeit und -größe, Regenverteilung und abfließendes Oberflächenwasser von umgebenden Gebäudeteilen auftreten können. Da es unmöglich ist, ein genormtes Prüfverfahren zu entwickeln, das den gesamten Bereich möglicher Zustände simulieren kann, wird in dieser Norm ein auf die Schutzblendenoberfläche gerichteter Schlagregen mit simuliertem Winddruck vorgesehen. Somit ergibt sich eine allgemeine Grundlage, um die Leistungsfähigkeit von Wetterschutzblenden unterschiedlicher Bauarten bei der Abweisung von Wasser vergleichen zu können. Diese Norm gilt nicht für die Beurteilung der Leistung von Überdruckklappen.
Das Ziel der in dieser Norm angegebenen Prüfungen sind:
a) Wetterbeständigkeitsprüfungen für den Nachweis des Wirkungsgrades von Wetterschutzblenden unter Beanspruchung durch Winddruck bei verschiedenen Luftvolumenströmen;
b) Austritts- und Eintritts-Verlustkoeffizient sowie Druckanforderungen für den Nachweis des Luftdruckverlustes durch die Wetterschutzblende bei verschiedenen Luftvolumenströmen und durch Berechnung des Austritts- und Eintritts-Verlustkoeffizienten.
Ventilation des bâtiments - Bouches d'air - Essai de performance des grilles d'air extérieur soumises a une pluie simulée
La présente Norme européenne spécifie une méthode permettant de mesurer la performance de rejet d'eau de grilles d'air extérieur soumises aux pressions simulées de la pluie et du vent, a la fois avec et sans écoulement d'air a travers la grille soumise a essai. Pour les besoins des essais spécifiés dans la présente Norme, une section de grille d'air extérieur de 1 000 mm x 1 000 mm, ou découpée a la lame la plus proche, est utilisée.
Les grilles d'air extérieur ont pour principale fonction de limiter le passage de l'eau en cas de pluie tout en permettant a l'air d'entrer ou de sortir d'un systeme de distribution d'air ou d'une partie d'un bâtiment. Elles sont utilisées dans de nombreux cas, entre lesquels peuvent exister des différences au niveau de la vitesse et de la direction du vent, du degré de turbulences locales, du débit et de la taille des gouttes, de la façon dont tombe la pluie et du ruissellement de l'eau a la surface du bâtiment. Il est matériellement impossible de spécifier un mode opératoire d'essai normalisé qui puisse simuler l'ensemble de ces conditions, mais le mode opératoire spécifié par la présente norme s'applique aux grosses averses dirigées contre la surface de la grille auxquelles s'ajoutent des pressions de vent simulées. Elle permet ainsi d'avoir une base commune pour comparer la performance de rejet d'eau pour des grilles d'air extérieur de conception différente. La présente norme n'est pas prévue pour l'évaluation des performances aux intempéries des registres de décharge.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lüftung von Gebäuden - Endgeräte - Leistungsprüfung von Wetterschutzblenden bei Beanspruchung durch BeregnungVentilation des bâtiments - Bouches d'air - Essai de performance des grilles d'air extérieur soumises a une pluie simuléeVentilation for buildings - Terminals - Performance testing of louvres subjected to simulated rain91.140.30VLVWHPLVentilation and air-conditioningICS:Ta slovenski standard je istoveten z:EN 13030:2001SIST EN 13030:2001en01-december-2001SIST EN 13030:2001SLOVENSKI
STANDARD
SIST EN 13030:2001
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13030October 2001ICS 91.140.30English versionVentilation for buildings - Terminals - Performance testing oflouvres subjected to simulated rainVentilation des bâtiments - Bouches d'air - Essai deperformance des grilles d'air extérieur soumises à une pluiesimuléeLüftung von Gebäuden - Endgeräte - Leistungsprüfung vonWetterschutzblenden bei Beanspruchung durch BeregnungThis European Standard was approved by CEN on 18 August 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13030:2001 ESIST EN 13030:2001
EN 13030:2001 (E)2ContentsForeword.31Scope.42Normative references.43Terms and definitions.54Symbols and subscripts.64.1Symbols.64.2Subscripts.65Instrumentation.75.1Air flow rate measurement.75.2Wind Velocity Measurement.75.3Pressure Measurement.75.4Temperature measurement.85.5Water flow meters.85.6Timers.85.7Rain gauge.86Test apparatus.86.1General.86.2Wind simulation equipment.86.3Weather section.96.4Rain simulation equipment.96.5Collection duct.96.6Water collection.96.7Aerodynamic measurement section.96.8Mechanical ventilation section.106.9Test specimen and calibration plate.107Test methods.107.1Water penetration test.107.2Discharge and entry loss coefficient/pressure loss.138Classification of weather louvres.148.1General.148.2Penetration classification.148.3Discharge and Entry loss coefficient.158.4Classification nomenclature.15Annex A (normative)
Simulated rain spray nozzles.16Annex B (normative)
Water eliminator performance test.17B.1General.17B.2Installation.17B.3Procedure.17Annex C (normative) Diagrams of apparatus and typical graphs.18Annex D (informative)
Typical calculation examples.25D.1Test results.25D.2Entry loss coefficient of entry.27D.3Louvre effectiveness.31D.4Classification.31SIST EN 13030:2001
EN 13030:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 156 "Ventilation forbuildings", the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by April 2002, and conflicting national standards shallbe withdrawn at the latest by April 2002.The annexes A, B and C are normative. Annex D is informative.WarningAttention is drawn to the possible risks associated with legionella, if recirculated water is used orbiofilms are allowed to develop within the facility during weather louvre testing, in order thatappropriate precautions are taken to safeguard the health of those involved.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13030:2001
EN 13030:2001 (E)41 ScopeThis European Standard specifies a method for measuring the water rejection performance of louvressubject to simulated rain and wind pressures, both with and without air flow through the louvre undertest. For the purpose of tests in this standard, a 1000 mm
1000 mm section of weather louvre or thenearest possible blade increment is considered.Weather louvres are designed to restrict the passage of water during rainfall while allowing thepassage of air into or from an air distribution system or part of a building. They are used in a widerange of applications, where there may be differences in wind speed and direction, levels of localturbulence, rate and droplet size, distribution of rainfall and surface water flow from the surroundingstructure. It is impractical to consider a standard test procedure simulating the whole range of likelyconditions, but this standard provides for heavy rainfall directed on to the louvre surface, withsimulated wind pressures. This provides a common basis on which to compare the water rejectionperformance of weather louvres of different designs. This standard is not intended for the evaluationof weather performance of pressure relief dampers.The purpose of tests incorporated in this European Standard is as follows:a) Weather testsTo establish the weather louvre effectiveness when subjected to wind pressure at various air flowrates.b) Discharge and Entry loss coefficient/Pressure requirementsTo establish the air pressure loss through the weather louvre at various air flow rates and bycalculation the Discharge and Entry Loss Coefficient.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references the subsequent amendments to or revisions ofany of these publications apply to this European Standard only when incorporated in it by amendmentor revision. For undated references the latest edition of the publication referred to applies (includingamendments).EN 24185, Measurement of liquid flow in closed conduits — Weighing method (ISO 4185:1980)CR 12792, Ventilation for buildings — Symbols and TerminologyEN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices — Part 1 orificeplates, nozzles and venturi tubes inserted into circular section conduits running full (ISO 5167-1:1991)ISO 5221, Air distribution and air diffusion — Rules to methods of measuring air flow rate in an airhandling ductISO 5801, Industrial fans — Performance testing using standardized airwaysSIST EN 13030:2001
EN 13030:2001 (E)53 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in CR 12792, togetherwith the following, apply.3.1weather louvredevice intended to allow the passage of supply or exhaust air while minimising the ingress of rain;louvres can have either fixed or adjustable blades3.2insertion lossdifference in simulated rain penetration between the test specimen (weather louvre) and thecalibration plate at the same test conditions3.3weather louvre core areaproduct of the minimum height H and minimum width W of the front opening in the weather louvreassembly with the louvre blades removed (see Figure C.5)3.4louvre calibration plateplate having an opening of the same geometric shape and dimensions as the core area of the testspecimen3.5discharge or entry loss coefficient of a louvreactual air flow rate divided by the theoretical air flow rate at a given pressure difference across thelouvre. For louvres tested with air flow in the reverse direction then the coefficient of dischargebecomes the coefficient of entry3.6theoretical air flowproduct of the louvre core area and the air velocity calculated using the pressure difference across thelouvre as the velocity pressure, assuming CD or CE = 13.7weather louvre effectivenessquotient resulting from the value of the insertion loss of the louvre assembly at any air velocity dividedby the amount of water penetration of the calibration plate at that velocitySIST EN 13030:2001
EN 13030:2001 (E)64 Symbols and subscripts4.1 SymbolsSymbolQuantityUnitALouvre core area/area of the hole in calibration platem2CDDischarge Loss CoefficientCEEntry Loss CoefficientpsaAbsolute static pressurePapaAtmospheric pressurePapdDynamic (velocity) pressure ½ v2PaptaStagnation or absolute total pressurePapsStatic gauge pressure (psa - pa)PaptTotal pressure (pta - pa)PapFlow meter pressure differencePaptConventional total pressure differential for an air density of 1,2 kg.m-3 at theinlet to the louvre or valve under testPaqvVolume flow rate of air at the flow meterm3 s-1qsWater supply rate to the nozzlesl h-1quWater rejection rate collected upstream of the test louvrel h-1qdWater penetration rate collected downstream of the test louvrel h-1vwWind velocitym s-1vcCore velocitym s-1Effectiveness%Air densitykg m-3TemperatureC4.2 Subscripts1outlet of the weather louvre under testmmeasuring point at the air flow meternvalue at selected point of air flow rate/static pressure curveomeasured value with calibration platecorrnom(used to show correct values against references values)SIST EN 13030:2001
EN 13030:2001 (E)75 Instrumentation5.1 Air flow rate measurement5.1.1 The air flow rate shall be measured using instruments and techniques in accordance with ISO5221, EN ISO 5167-1 and ISO 5801.5.1.2
Air flow meters shall have ranges and accuracies as specified in Table 1.Table 1 — Range and accuracy of air flow metersRangeError limitm3 s-1%0,07 to 7 2,50,007 to 0,07 5,0NOTEFlow meters can be calibrated in situ by means of pitot static tube traverse techniques described inISO 3966.5.1.3 Flow meters shall be checked at intervals as appropriate but not exceeding 12 months. Thischeck can take the form of one of the following:a) a dimensional check for all flow meters not requiring calibration;b) a check calibration over their full range using the original method employed for initialcalibration or meters calibrated in situ;c) a check against a flow meter which meets the flow meter specification ISO 5221.5.2 Wind Velocity MeasurementThe wind velocity shall be measured using a pitot tube, vane anemometer or other similar styleinstrument for which the measuring error does not exceed 2,0 %5.3 Pressure Measurement5.3.1Pressure in the duct shall be measured by means of a liquid-filled calibrated pressure gauge,or any other device conforming to 5.3.2.5.3.2The maximum scale interval shall not be greater than the values given in Table 2 for theappropriate range of pressure gauges.Table 2 — Range and maximum scale interval for pressure measurementRangeMax. scale intervalPaPa 251,0> 25 to
2502,5> 250 to
5005,0> 50025,0SIST EN 13030:2001
EN 13030:2001 (E)85.3.3For air flow measurements, the minimum pressure differential shall be:a) 25 Pa with an inclined tube pressure gauge or micro-pressure gauge;b) 500 Pa with a vertical tube pressure gauge.5.3.4Calibration standards shall be as follows:a) for instruments with the range
25 Pa, a pressure gauge with an error limit of
0,5 Pa;b) for instruments with the range > 25
500 Pa, a pressure gauge with an error limit of
2,5Pa (vertical pressure gauge).5.4 Temperature measurementMeasurement of temperature shall be by means of mercury-in-glass thermometers, resistancethermometers, or thermo-couples. Instruments shall be graduated to give readings in intervals notgreater than 0,5 K and calibrated up to the nearest 0,25 K.5.5 Water flow meters5.5.1The measurement error of water flow meters shall not exceed 0,5 % of the indicated flow rate.5.5.2Water flow meters shall be calibrated against a known weight of water flowing for ameasurement time period as specified in EN 24185.5.6 TimersThe error limit for timers for determining water flow rates shall not exceed 0,2 s.5.7 Rain gaugeThe error limit for rain gauges shall not exceed 2 % of the indicated reading.6 Test apparatus6.1 GeneralA diagram of the test apparatus is shown in Figure C.1 and the requirements for the various elementsdescribed in 6.2 to 6.8.6.2 Wind simulation equipmentAn external fan shall be fitted to direct the air perpendicular to the weather louvre test plane, asillustrated in Figure C.2.The air outlet of the fan and any silencing or straightening section shall not be less than 1 m diameter.The fan shall be capable of producing an air velocity of 13 m·s-1 at a distance 1 m in front of the testplane of the weather louvre.An air straightener section shall be assembled to the outlet of the fan to avoid swirling air currents.A suitable air straightener is illustrated in Figure C.2. Other air straighteners (such as are described inISO 5801 for fan tests) can also be used.SIST EN 13030:2001
EN 13030:2001 (E)96.3 Weather sectionThe weather louvre or calibration plate to be tested shall be mounted and fixed in the centre of a3 m
3 m square wall at the rear of the weather section (see Figure C.2).The weather louvre or the calibration plate as appropriate shall be tightly sealed to the wall, asrecommended by the manufacturer.The outside face of the weather louvre shall be facing the wind and rain simulation equipment.6.4 Rain simulation equipmentThe simulated rain shall be produced by at least 4 nozzles in an array close to the discharge of thewind effect fan to suit the spread of rain required. A suitable spray can be achieved by using thenozzles and control system as shown in Figures C.2 and C.4 and annex A.The rain simulation equipment shall satisfy the following requirements with the calibration platemounted in the test opening.a) The equipment shall be capable of producing a simulated rain penetration through the calibrationplate of 75 l·h-1 (+ 10 % / 0 %) per square metre of opening;b) The simulated rainfall rate measured using the rain gauge in the positions shown in Figure C.5shall not deviate from the mean value by more than 15 %;c) The water penetration through the calibration plate measured in the collection section shall be atleast 80 % of the total water collected in both the weather section at the base, in front of thecalibration plate, and the collection duct.6.5 Collection ductThe collection duct (see Figure C.3) shall be sealed against the back of the weather section.The collection duct shall have a water droplet elimination section at the downstream end to preventcarry over of airborne water droplets from the collection duct (see annex B).The collection duct shall have an airtight connection to the air flow measuring plenum.6.6 Water collection6.6.1 Water collection at the collection ductWater shall be collected at the drain from the collection duct in order to measure the penetration forthe test period (see Figure C.3).6.6.2 Water collection in front of the louvreWater shall be collected in the weather section at the base in front of the weather louvre or calibrationplate in order to measure the water rejection during the test period (see Figure C.2).6.7 Aerodynamic measurement section6.7.1 Air flow rate measurementThe air flow rate shall be measured using an inlet cone or similar device positioned at the end of thedischarge end of the section (see Figure C.6). Uniform flow approaching the conical inlet shall beobtained by fitting resistance screens.SIST EN 13030:2001
EN 13030:2001 (E)10The required uniformity is considered to be achieved if the maximum air velocity in plane A nowhereexceeds 1,25 times the average velocity in plane A (see Figure C.6).Three uniform wire mesh or perforated plate screens adequately supported and sealed to thechamber spaced 100 mm apart and with 60 %, 50 % and 45 % free area successively in the directionof flow may be expected to sec
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