1、BRITISH STANDARD BS EN 13181:2001 Ventilation for buildings Terminals Performance testing of louvres subject to simulated sand The European Standard EN 13181:2001 has the status of a British Standard ICS 91.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 13181:2001
2、 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 16 October 2001 BSI 16 October 2001 ISBN 0 580 38232 X National foreword This British Standard
3、 is the official English language version of EN 13181:2001. The UK participation in its preparation was entrusted to Technical Committee RHE/2, Air distribution and air diffusion, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its
4、 secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Sta
5、ndards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirer
6、s to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a
7、front cover, an inside front cover, the EN title page, pages 2 to 23 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13181 Augus
8、t2001 ICS23.120 Englishversion VentilationforbuildingsTerminalsPerformancetestingof louvressubjecttosimulatedsand VentilationdesbtimentsBouchesdairPerformances desgrillessoumisesunesimulationdesable LftungvonGebudenEndgerteLeistungsprfungvon SchutzblendenunterEinwirkungvonsimuliertemSand ThisEuropea
9、nStandardwasapprovedbyCENon22June2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonap
10、plicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmember
11、sarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG Mana
12、gementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13181:2001EEN13181:2001(E) 2 Contents Page Foreword .3 1 Scope3 2 Normativereferences 3 3 Termsanddefinitions. 4 4 Symbolsandsubscripts .5 4.1 Symbols .5
13、4.2 Subscripts5 5 Instrumentation .6 5.1 Airflowratemeasurement . 6 5.2 Pressuremeasurement 6 5.3 Temperaturemeasurement . .7 5.4 Weighingequipment .7 5.5 Timers.7 6 Testapparatus .7 6.1 Aerodynamicsandtraplouvretestfacility 7 6.2 Sandinjectorequipment . .7 6.3 Aerodynamicmeasurementsection .8 7 Gra
14、dingofthetestsand .13 8 Pretestofsanddistributionforeachtestseries 14 9 Testmethods .17 9.1 Sandrejection 17 9.2 Entrylosscoefficient/pressureloss .19 AnnexA (informative) Typicaltestresultsandcalculationexamples 22 A.1 Entrylosscoefficient 22 A.2 Sandtraplouvreeffectiveness 23 A.2.1 Recordingresult
15、s. .23 A.2.2 Rating .23EN13181:2001(E) 3 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC156“Ventilationfor buildings”thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestb
16、yFebruary2002,andconflictingnationalstandards shallbewithdrawnatthelatestbyFebruary2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,
17、Iceland,Ireland,Italy,Luxembourg, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Warning Attentionisdrawntothepossiblerisksassociatedwithstaticelectricitychargebuildup,whenusing vacuumcleanerswithplasticdustcontainersduringsandtraplouvretesting,inorderthatappropriate precau
18、tionsaretakentosafeguardthehealthofthoseinvolved. 1Scope ThisEuropeanStandardspecifiesamethodformeasuringthesandrejectionefficiencyofsandtrap louvressubjecttosimulatedsandandwithinletairflowthroughthelouvreundertest.TheStandard considersa1000mm 1000mmsectionofsandtraplouvre,orthenearestpossibleblade
19、increment,for evaluationpurposes. ThepurposeofthetestsincorporatedinthisEuropeanStandardisasfollows: a) SandRejectionEffectiveness Toestablishthesandrejectioneffectivenesswhensubjectedtovariousairflowratesthroughthe assembly. b) Entrylosscoefficient/Pressurerequirements Toestablishtheairpressureloss
20、throughthesandtraplouvreatvariousairflowratesandby calculationDischargeLossCoefficient. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereaft
21、er.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublications applytothisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundated referencesthelatesteditionofthepublicationreferredtoapplies(includingamendments). CR12792, VentilationforbuildingsSymbolsandterminologyE
22、N13181:2001(E) 4 ENISO51671, MeasurementoffluidflowbymeansofpressuredifferentialdevicesPart1orifice plates,nozzlesandventuritubesinsertedincircularcrosssectionconduitsrunningfull . (ISO51671: 1991) ISO3966 ,MeasurementoffluidflowinclosedconduitsVelocityareamethodusingPitotstatictubes ISO5221, Airdis
23、tributionandairdiffusionRulestomethodsofmeasuringairflowrateinanair handlingduct ISO5801, IndustrialfansPerformancetestingusingstandardizedairways 3 Termsanddefinitions ForthepurposesofthisEuropeanStandardthetermsanddefinitionsgiveninCR12792,together withthefollowing,apply: 3.1 sandtraplouvre device
24、intendedtoallowthepassageofsupplyorexhaustairwhileminimisingtheingressofairborne sand NOTE Sandtraplouvresareairterminaldevicesforuseindesertlikeconditionsorotherconditionswhere airbornesandispresent.Theyareusuallypositionedontheinletstoairdistributionsystemsorpartsofa building,toalleviatetheloadont
25、hemainfiltrationofairconditioningandsimilarsystems. 3.2 sandtraplouvrecorearea productoftheminimumheightandminimumwidthofthefrontopeninginthesandtraplouvre assemblywiththelouvrebladesremoved(seeFigure5) 3.3 entrylosscoefficientofalouvre actualairflowratedividedbythetheoreticalairflowrateatagivenpres
26、suredifferenceacrossthe louvre 3.4 theoreticalairflow productofthelouvrecoreareaandtheairvelocitycalculatedusingthepressuredifferenceacrossthe louvreasthevelocitypressure,assuming C E =1(seeclause4) 3.5 sandrejectioneffectiveness quotientresultingfromthetotalweightofsandrejecteddividedbythetotalweig
27、htofsandinjected,at anyvelocitythroughthelouvreEN13181:2001(E) 5 4 Symbolsandsubscripts 4.1Symbols Symbol Quantity Unit A Louvrecorearea m 2 C E EntryLossCoefficient m i Sandsupplytotheinjector kg m u Sandcollectedupstreamofthetestlouvre kg p sa Absolutestaticpressure Pa p a Atmosphericpressure Pa p
28、 d Dynamic(Velocity)pressure v 2 Pa p ta Stagnationorabsolutetotalpressure Pa p s Staticgaugepressure( p sa p a ) Pa p t Totalpressure( p ta p a ) Pa p Flowmeterpressuredifference Pa p t Conventionaltotalpressuredifferentialforanairdensityof1,2kgm 3 attheinlettothesandtraplouvreundertest Pa q v Volu
29、merateorairflowattheflowmeter m 3 s 1 v CoreVelocity ms 1 Effectiveness % Airdensity kgm 3 Temperature C 4.2Subscripts Subscript Description l outletofthesandtraplouvreundertest m measuringpointattheflowmeter n valueatselectedpointofflowrate/staticpressurecurveEN13181:2001(E) 6 5Instrumentation 5.1
30、Airflowratemeasurement Theairflowrateshallbemeasuredusinginstrumentsandtechniquesinaccordancewith ENISO51671,ISO5221,andISO5801. AirflowmetersshallhavetherangesandaccuraciesspecifiedinTable1. Table1Rangesandaccuraciesofflowmeters Range UncertaintyofMeasurement m 3 s 1 % from0,07to7 2,5 from0,007to0,
31、07 5 NOTE FlowmeterscanbecalibratedinsitubymeansofpitotstatictubetraversetechniquesdescribedinISO 3966. Flowmetersshallbecheckedatintervalsasappropriatebutnotexceeding12months.Thischeckcan taketheformofoneofthefollowing: a) adimensionalcheckforallflowmetersnotrequiringcalibration; b) acheckcalibrati
32、onovertheirfullrangeusingtheoriginalmethodemployedforinitial calibrationofmeterscalibratedinsitu; c) acheckagainstaflowmeterwhichmeetstheflowmeterspecificationdescribedinISO5221. 5.2Pressure measurement 5.2.1 Pressureintheductshallbemeasuredbymeansofaliquidfilledcalibratedmanometer,or anyotherdevice
33、conformingto5.2.2. 5.2.2 ThemaximumscaleintervalshallnotbegreaterthanthecharacteristicsgiveninTable2for theappropriaterangeofmanometers. Table2Rangeandscaleintervalformanometers Range Max.scaleinterval Pa Pa 25 1,0 25to 250 2,5 250to 500 5,0 500 25,0EN13181:2001(E) 7 5.2.3 Forairflowmeasurements,the
34、minimumpressuredifferentialshallbe: a) 25Pawithaninclinedtubemanometerormicromanometer; b) 500Pawithaverticaltubemanometer. 5.2.4 Calibrationstandardsshallbeasfollows: a) forinstrumentswiththerange 25Pa,amicromanometeraccurateto0,5Pa; b) forinstrumentswiththerange25to 500Pa,amanometeraccurateto2,5Pa
35、(hook gaugeormicromanometer); c) forinstrumentswiththerange500Pa,amanometeraccurateto25 Pa(vertical manometer). 5.3Temperature measurement Measurementoftemperatureshallbebymeansofmercuryinglassthermometers,resistance thermometers,orthermocouples.Instrumentsshallbegraduatedtogivereadingsinintervalsno
36、t greaterthan0,5Kandcalibratedtoanaccuracyof0,25K. 5.4 Weighingequipment Themassofsandshallbemeasuredbymeansofabalanceorsimilardevicewhichshallhavean accuracyof+0,5%oftheindicatedweight. 5.5Timers Timersfordeterminingsandflowratesshallhaveaminimumaccuracyof+0,2s. 6 Testapparatus 6.1 Aerodynamicsandt
37、raplouvretestfacility ThetestfacilityshallbeconstructedfromanumberofseparatesectionsasillustratedinFigure1.It shallbecapableofproducinganairflowratethroughthesandlouvreundertestovertherangeof 0,5m 3 s 1 to3,5m 3 s 1 ,simulatingblownsand,andmeasuringpressurelosses. Theelementsaredescribedin6.2and6.3
38、6.2 Sandinjectorequipment Thesandinjectorequipmentshallconsistofafan,injectortube,mainfunnel,feedercone,distribution tubeandspreaderplate. TheequipmentshallbeconstructedasshowninFigures2and3. Theequipmentshallbepositionedsuchthatitsoutletiscentrallylocatedatthetopoftheapproach ductand1,5mfromthesand
39、traplouvreundertest.EN13181:2001(E) 8 Theinjectorfanshallbecapableofcreatinganairvelocityof20m.s 1 to25m.s 1 inthedistribution tube. Themainfunnelshallbecapableofholdingatleast2kgofsandandbepositioneddirectlyabovethe feedercone. Thesandfeederconeshallbepositionedverticallyandpenetratethedistribution
40、tubeby approximately1mm.Theincludedangleoftheconeshouldbebetween30 o and45 o . Thesandfeederconesshallbecalibratedfortherequiredrateoffeed. 6.3 Aerodynamicmeasurementsection AtypicalarrangementisillustratedinFigure4. Theairflowrateshallbemeasuredusinganinletconeorsimilardevicepositionedattheendofthe
41、 dischargesection.Toachieveauniformflowapproachingthemeasurementdeviceresistance screensshouldbefitted.EN13181:2001(E) 9 Dimensionsinmillimetres Key 1Sandinjectionsection 2Aerodynamicmeasurementsection 3Inletconeoralternativeairflowmeasuringstation 4Resistancescreens 5MechanicalVentilationscreen 6Sa
42、ndtraplouvreundertest 7Sandcollectiontrough 8Ventilationair 9Ventilationfan *DimensionsdeterminedfromISO5221 Figure1SandtraplouvreaerodynamictestfacilityEN13181:2001(E) 10 Figure2TypicalsandinjectorequipmentEN13181:2001(E) 11 Dimensionsinmillimetres Key 1Connectiontoinjectorfan 5Coneholdingtube 2Duc
43、twall 6Spreaderplate 3Mainfunnel 7Distributiontube 4Sandfeedercone Figure3SandinjectorfeederconeanddistributiontubeEN13181:2001(E) 12 Dimensionsinmillimetres Key 1PlaneA 2Resistancescreens 3Plenumchamber 4Inletconeoralternativeairflowmeasuringstation 5Ventilationfan 6Ventilationair 7Pressuremeasuringpoints *DimensionsdeterminedfromISO5221 Figure4AerodynamicmeasurementsectionEN13181:2001(E) 13 TherequireduniformityisconsideredtobeachievedifthemaximumairvelocityinplaneAnowhere exceeds1,25timestheaveragevelocityinplaneA,or2,5m s 1 ,whicheverisgreater. Threeuniformw
