BS EN 13182-2002 Ventilation for buildings - Instrumentation requirements for air velocity measurements in ventilated spaces《建筑物的通风 通风空间的空气流速测量仪器的要求》.pdf

1、BRITISH STANDARD BS EN 13182:2002 Ventilation for buildings Instrumentation requirements for air velocity measurements in ventilated spaces The European Standard EN 13182:2002 has the status of a British Standard ICS 23.120 BS EN 13182:2002 This British Standard, having been prepared under the direc

2、tion of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 11 October 2002 BSI 11 October 2002 ISBN 0 580 40564 8 National foreword This British Standard is the official English language version of EN 13182:2002.

3、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 secretary. NOTE In preparing the EN for publication as a Br

4、itish Standard, it was noticed that there were typographical errors in the text. On page 7, in Figure 1, under the column headed “Upper response frequency” the figures “ 1,0” and “1,0” should both read “ 1,0”. Similarly, on page 11, in Table 4, under the column headed “Upper response frequency”, the

5、 figures “ 1,0 Hz” should both read “ 1,0”. These errors will be rectified in a future corrigendum. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International S

6、tandards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Stan

7、dard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe

8、an developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 19 cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued sinc

9、e publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13182 April2002 ICS23.120 Englishversion VentilationforbuildingsInstrumentationrequirementsforair velocitymeasurementsinventilatedspaces VentilationdesbtimentsPrescriptiondinstrumentation pourlesmesuresdevitessesdai

10、rdansdesespaces ventils LftungvonGebudenGertetechnischeAnforderungen frMessungenderLuftgeschwindigkeitinbelfteten Rumen ThisEuropeanStandardwasapprovedbyCENon27December2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthest

11、atusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation

12、 undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portug

13、al,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13182:2002EEN

14、13182:2002(E) 2 Contents page Foreword 3 Introduction 4 1 Scope 4 2 Normativereferences 4 3 Terms,definitionsandsymbols 4 4 Maincharacteristicsofairflowpatterns 6 4.1 General 6 4.2 ZoneA 6 4.3 ZoneB 6 4.4 ZoneC 6 5 Relevantparameters 8 6 Requirementsforvelocityprobe 9 6.1 Velocityandtemperaturerange

15、 9 6.2 Upperresponsefrequencylimit 9 6.3 Directionalsensitivity 9 6.4 Influenceofnaturalconvection 11 6.5 Influenceofambientairtemperature 11 6.6 Influenceofairdensity 12 6.7 Dimensions 12 7 Signalprocessingrequirementsforairvelocitymeasurements 12 7.1 General 12 7.2 Samplingrateandmeasuringperiod 1

16、3 7.3 Determinationofmeanvalue 15 7.4 Determinationofstandarddeviation 15 7.5 Determinationofturbulenceintensity 15 8 Calibration 15 8.1 Instrumentmanufacturers 15 8.1.1 General 15 8.1.2 Accuracy 15 8.2 Recalibrationbytheuser 17 Bibliography 19EN13182:2002(E) 3 Foreword ThisdocumentEN13182hasbeenpre

17、paredbyTechnicalCommitteeCEN/TC156“Ventilationfor buildings“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyOctober2002,andconflictingnationalstandardsshallbewithdrawn atthelatestbyOctob

18、er2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,

19、SwitzerlandandtheUnitedKingdom.EN13182:2002(E) 4 Introduction EuropeanStandardsexistwhichdealwiththeevaluationoflocalairvelocityinventilatedspaces.This parameterisimportantintheassessmentofcomfort 1) .Itisdeterminedintheassessmentofairterminal deviceperformanceinthelaboratory 1) andinthesitesituatio

20、n(inabuilding)wherecomparisonsare requiredinrelationtospecifiedvalues 1) . Thisstandardprovidesacommonbasisfortheinstrumentationrequirementsforalltheaboveapplications. Thecharacteristicsofinstrumentscanvaryaccordingtotheirmeasuringandsignalprocessingprinciples, theirconstruction,andthewayinwhichthey

21、areused.Itisimportantthattheuserscomparethequalityof theinstrumentsavailableinthemarketatanygiventimeandacheckismadethattheyconformtothe requirementsofthisEuropeanStandard. 1 Scope ThisEuropeanStandardspecifiesthemaincharacteristicsofairvelocitymeasuringdevices.Thisincludes requirementsforthermalvel

22、ocityprobes,recalibrationandthesignalprocessingofmeasurementsina ventilatedspace,includingthoseintheairjetandintheoccupiedzone.Othertypesofvelocitymeasuring devicesshouldfulfiltheperformanceparametersstatedbutappropriatecalibrationtechniquesshouldnot necessarilybeusedwhicharedescribedinthisstandard.

23、 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmenttoorrevisionsofanyofthesepublicationsapplytoth

24、isEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). CR12792, VentilationforbuildingsSymbolsandterminology. EN27726, ThermalenvironmentsInstrumentsandmethodsformeasuringphysicalquantities (ISO772

25、6:1985). 3 Terms,definitionsandsymbols ForthepurposesofthisEuropeanStandardtheterms,definitionsandsymbolsinCR12792applytogetherwith thosegiveninTable1. 1) SeeBibliography.EN13182:2002(E) 5 Table1 Symbols Symbol Quantity Unit f Frequency Hz f up Upperfrequency Hz N Totalnumberofsamples n Speedofrotat

26、ion rad s 1 n r Samplingrate s 1 p Pressuredrop Pa R Radius m s v Standarddeviationofvelocity ms 1 T u Turbulenceintensity % Airtemperature C U Outputsignal V U v Outputsignalofvelocity V U t Outputsignaloftemperature V v Airvelocity ms 1 v meanairvelocity ms 1 v i Instantaneousairvelocity ms 1 v o

27、Referenceairvelocity ms 1 v Airvelocityreadingatyawangle ms 1 v Airvelocityreadingatrollangle ms 1 v true Trueairvelocity ms 1 v Deviationofairvelocity ms 1 Angleofyaw Rotationalangle(rollangle) Time sEN13182:2002(E) 6 4 Maincharacteristicsofairflowpatterns 4.1General Inventilatedspaces,therearethre

28、emainzonesofinterest(seeFigure1),dependingontheairflow distribution.Table2showstherangeofflowcharacteristics,whichcanoccurinthezonesasspecifiedin4.2, 4.3,and4.4. Table2 Maincharacteristicsofairflowpatterns Zone Rangeofmean airVelocity Turbulence intensity Frequency Temperature range Mainflow directi

29、on v T u f ms 1 %H z C A (jet) 0,3to10,0 10to50 3 10to50 unidirectional B (jet) 0,1to0,5 5to50 1 15to25 unidirectional C (occupied zone) 0,1to0,5 20to80 1 18to35 omnidirectional 4.2ZoneA Theareawithinthesupplyairjetinamixedairflowapplication. 4.3ZoneB Theareawithinthesupplyairstreaminanapplicationus

30、inglowvelocityairterminaldevices(forexample; displacementventilation). 4.4ZoneC Theoccupiedzoneareawithinventilatedspaces(seeprEN13779).EN13182:2002(E) 7 123 4 4 6 6 5 6 Key 1 MixedairflowCeilingairterminaldevice 4 ZoneA 2 MixedairflowFloorairterminaldevice 5 ZoneB 3 Displacementairflow 6 ZoneC Main

31、characteristicsofairflowpattern Parameterofinterest Requirementsforvelocityprobe Signalprocessing requirements Zone Velocity range Turbulence intensity Frequency Temperature range Mainflow direction Mean velocity Turbulence intensity Instantaneous velocityrange Temperature range Upper response frequ

32、ency Direction sensitivity minimum requirements a Measuring period Sampling Rate T u f v T u v f up n r m s 1 %H z C m s 1 %m 1 C Hz s l 1 A (Jet) 0,3to10 10to50 3,0 10to50 uni directional yes no 0,25to12 10to50 N/A unidirectional 60 1 B (Jet) 0,1to0,5 5to50 1,0 15to25 uni directional yes yes 0,05to

33、1,0 15to25 1,0 unidirectional 180 5 C (Occupied zone) 0,1to0,5 20to80 1,0 18to35 omni directional yes yes 0,05to1,0 18to35 1,0 omni directional 180 5 a Usingflowvisualisationtoestablishflowdirectioninallzones,twodimensionalorresponsesensorscanbeused. b N/ANotapplicablebecauseinZoneAonlythemeanveloci

34、tyisofinterestnotturbulenceintensity Figure1 MaincharacteristicsofairflowandrequirementsoflowvelocitymeasuringinstrumentsEN13182:2002(E) 8 5 Relevantparameters ThemainrelevantparametersapplicabletoventilatedspacesaregiveninTable3. Key 1Truevelocity 2Actualvelocity Figure2Exampleofvelocityrecordsat f

35、=2Hzusedtodefinetheupperfrequency Key Sact istheactualstandarddeviationofthevelocitymeasuredbythetestedprobe Strue isthestandarddeviationofthevelocitymeasuredbythereferenceinstrument Figure3Exampleofdynamicresponsecurvetodefinetheupperfrequency f upEN13182:2002(E) 9 Table3 Parameters Zone Meanveloci

36、ty v Turbulenceintensity T u Ay e sn o (Jet) By e sy e s (Jet) Cy e sy e s (Occupiedzone) 6 Requirementsforvelocityprobe 6.1Velocityandtemperaturerange ThevaluesfortheinstrumentvelocityrangeandtemperaturearegiveninTable4. 6.2Upperresponsefrequencylimit Theupperresponsefrequencylimitisdefinedasthehig

37、hestfrequencyofsinusoidalvelocityfluctuationsup towhichtheanemometershallbeabletomeasurethestandarddeviationoftheairvelocitywithanaccuracy of 10%(see7.4forturbulenceintensityintherangeof40%to60%,seealso7.5andFigure2). Alternatively,thestandarddeviationratio,whichisthestandarddeviationofthevelocityme

38、asuredbythe testedanemometerdividedbytheactualstandarddeviationofthevelocitycalculatedormeasuredbya referenceinstrumentunderidenticalflowconditions,canbeused.Thestandarddeviationratiocanbehigher orlowerthan1dependingontheelectricaldesignofthetestedanemometer.Theachievementofan accuracyof 10%impliesa

39、standarddeviationratioofbetween0,9and1,1(seeFigure3). 6.3Directionalsensitivity Theextremesofinstrumentdirectionalsensitivityaredescribedasfollows: Aunidirectionalprobehasasensorwhichhasastrongdirectionalsensitivityanddoesnotrespondtoflows inalldirections. Anomnidirectionalprobewillrespondtoflowfrom

40、virtuallyanydirection. Thedirectionalsensitivityisinvestigatedbymeasuringthevelocityasafunctionofangleofattackandthe investigationiscarriedoutasdescribedbelow. Therollcharacteristicsareobtainedbyrotationoftheprobeaboutthestemaxis(seeFigure4). Theyawcharacteristicsareobtainedbytiltingthestemaxisoftheprobeaboutitscentre(seeFigure5). Boththerollandyawcharacteristicsoftheprobesshallbespecified.