1、BRITISH STANDARD BS EN 14239:2004 Ventilation for buildings Ductwork Measurement of ductwork surface area The European Standard EN 14239:2004 has the status of a British Standard ICS 91.140.30 BS EN 14239:2004 This British Standard was published under the authority of the Standards Policy and Strate
2、gy Committee on 28 January 2004 BSI 28 January 2004 ISBN 0 580 43331 5 National foreword This British Standard is the official English language version of EN 14239:2004. The UK participation in its preparation was entrusted to Technical Committee RHE/2, Air distribution and air diffusion, which has
3、the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. 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 ent
4、itled “International Standards 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. Complian
5、ce with a British Standard 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 in
6、ternational and European 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 11 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amen
7、dments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14239 January2004 ICS91.140.30 Englishversion VentilationforbuildingsDuctworkMeasurementofductwork surfacearea VentilationdesbtimentsRseaudeconduitsMesurage delairesuperficielledesconduits Lftungvo
8、nGebudenLuftleitungenMessungvon Luftleitungsoberflchen ThisEuropeanStandardwasapprovedbyCENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbiblio
9、graphicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotified
10、totheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, S
11、lovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN14239:20
12、04:EEN14239:2004(E) 2 Contents page Foreword3 Introduction .5 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .5 4 Measurementofcircularductwork 5 5 Measurementofrectangularductwork. .7 AnnexA (informative) Ductsurfaceareasforuseincalculations9 Bibliography 11EN14239:2004(E) 3 Foreword This
13、document(EN14239:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC 156“Ventilationfor buildings“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJuly2004,andconflictingnationalstandardsshall
14、bewithdrawnatthelatestby July2004. Thestandardisoneofaseriesofstandardsforductworkusedforventilationandairconditioningofbuildingsfor humanoccupancy. ThepositionofthisstandardinthefieldofmechanicalbuildingservicesisshowninFigure1. AnnexAisinformative. Thisdocumentincludesabibliography. Accordingtothe
15、CEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Denmark, Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta, Netherlands,Norway,Pola
16、nd,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EN14239:2004(E) 4 Mechanicalbuildingservices ControlSystems Ventilationandair conditioningsystems HeatingSystems Airhandling units Ductwork Installation Ductwork hangersand supports Requirements forstrength Sheetmetal airductswit
17、h circularcross section Dimensions Circularsheet metalairducts Requirements forstrengthand leakage Rectangularsheet metalairducts Requirementsfor strengthand leakage Flanges Sheetmetal airductswith rectangular crosssection Dimensions Measurement ofductsurface area Requirementsfor ductwork components
18、 tofacilitate maintenance Determinationof mechanicalenergy loss Flexible ducts Ductworkmadeof insulationductboards Figure1 - PositionofEN14239inthefieldofmechanicalbuildingservicesEN14239:2004(E) 5 Introduction ThisEuropeanStandardprovidesamethodofmeasurementtoestablishthesurfaceareaforuseinfurther
19、calculationsforductworkinventilationandairconditioningsystems. 1Scope ThisEuropeanStandardspecifiestherequirementsforthemeasurementofthesurfaceareaofaductforusein thedeterminationofairleakageflowrateperunitsurfacearea(leakagefactor). Thestandardisapplicabletocircularandrectangularductsandcomponentsu
20、sedinairconditioningand ventilationsystemsinbuildings. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications.These referencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.Fordated referencesthesubsequentamendme
21、ntstotherevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN12792, VentilationforbuildingsSymbolsandterminologyandgraphicalsymbols. 3 Termsanddefiniti
22、ons ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN1 2792apply. 4 Measurementofcircularductwork Measurementofcircularductworkshallbecarriedoutinaccordancewiththefollowing,wherereferencesinthetext areasindicatedinFigure2whichshowsatypicalinstallation,andanexampleofcalculationfort
23、hisinstallationis showninTable1usingdatagiveninannexA. Thelengthofeachstraightductwiththesamediametershallbemeasuredbetweentwopointsonperpendiculars totheaxisoftheduct.Thelengthsofseparatecomponentssituatedbetweentheperpendicularssuchasdampers (A)andtransformationpieces(B)aretherebyincluded.Theaccur
24、acyofmeasurementshallbe 10mm. Openings,e.g.branchandinspectionpanels,shallnotbedeductedfromthesurfacearea.Thesurfaceareaofend platesshallalsobeincluded.However,internalductwallsorguidevanesshallnotbetakenintoaccount. Transformationpiecesshallbecalculatedbasedonthelargestdimension.Inthecasewherethebr
25、anchtapis locatedonatransformationpiece,themainductaxiscorrespondstotheductofthelargestsize. Theadditionallengthofabend(C)shallbecalculatedtotheintersectionofthestraightcenterlines,andthelength ofabranchshallbecalculatedfromtheaxisoftheprincipalduct(D).EN14239:2004(E) 6 Dimensionsinmillimetres 400 6
26、30 800 3300 4200 6500 3000 5200 800 A C BD Figure2 - Exampleoftypicalinstallationofductworkwithcircularcrosssection Table1 - Exampleofcalculationofductsurfaceareaforcircularducts Diameter mm Ductsurfacearea a perunitlength m 2 /m Length m Totalduct surfacearea m 2 800 2,51 6,5+5,2 2,51 11,7=29,4 630
27、 1,98 3,0 1,98 3,0=5,9 400 1,26 4,2+3,3 1,26 7,5=9,5 TotalforinstallationshowninFigure2 44,8 a FromTableA.1EN14239:2004(E) 7 5 Measurementofrectangularductwork Measurementofrectangularductworkshallbecarriedoutaccordingtothefollowingwherereferencesinthetext areasindicatedinFigure3,whichshowsatypicali
28、nstallation,andanexampleofcalculationforthisinstallationis giveninTable2usingdatagiveninannexA. Thelengthofeachstraightductofthesamedimensionsshallbemeasuredbetweentwopointsonperpendiculars totheaxisoftheduct.Theaccuracyofmeasurementshallbe 10mm.Openings,e.g.branchandinspection panels,shallnotbededu
29、ctedfromthesurfacearea.Thesurfaceareaofendplatesshallalsobeincluded. However,internalductwallsorguidevanesshallnotbetakenintoaccount.Thesurfaceareaoftransformation piecesshallbecalculatedinthesamemannerasastraightductbasedonthebiggestdimension(A).Inthecase wherethebranchtapislocatedonatransformation
30、piece,themainductaxiscorrespondstotheductofthelargest size. Theadditionallengthofabendshallbecalculatedtotheintersectionofthestraightcenterlines,andthelengthofa branchshallbecalculatedfromtheaxisoftheprincipalduct(B). Dimensionsinmillimetres 1500 800 1500 1500 1000 1500 3100 3800 400x400 600x400 800
31、x400 800x400 400 600 1000 200x400 200x400 1500 1500 3600 1500 1500 3700 400 1500 1900 B A Figure3 - ExampleoftypicalinstallationofductworkwithrectangularcrosssectionEN14239:2004(E) 8 Table2 - Exampleofcalculationofductsurfaceareaforrectangularducts Dimensions mm Ductsurfacearea a perunitlength m 2 /
32、m Length m Totalduct surfacearea m 2 800 400 2,4 1,9+3,1 2,4 5,0=12,0 600 400 2,0 3,8 2,0 3,8=7,6 400 400 1,6 1,5 1,6 1,5=2,4 200 400 1,2 3,6+3,7 1,2 7,3=8,8 TotalforinstallationshowninFigure3 30,8 a FromTableA.2EN14239:2004(E) 9 Annex A (informative) Ductsurfaceareasforuseincalculations A.1 Ductsur
33、faceareaperunitlengthforcircularducts TheductsurfaceareaperunitlengthforcircularductsinaccordancewithEN1506isgiveninTableA.1. TableA.1 - Ductsurfaceareaperunitlengthforcircularducts Nominaldiameter mm Ductsurfacearea perunitlength m 2 /m 63 0,197 80 0,251 100 0,314 125 0,393 150 0,471 160 0,502 200
34、0,628 250 0,785 300 0,943 315 0,990 355 1,11 400 1,26 450 1,41 500 1,57 560 1,76 630 1,98 710 2,23 800 2,51 900 2,83 1000 3,14 1120 3,52 1250 3,93EN14239:2004(E) 10 A.2 Ductsurfaceareaperunitlengthforrectangularducts TheductsurfaceareaperunitlengthforrectangularductsinaccordancewithEN1505isgiveninTa
35、bleA.2. TableA.2 - Ductsurfaceareaperunitlengthforrectangularductsinm/m Side lengths mm 100 150 200 250 300 400 500 600 800 1000 1200 200 0,60 0,70 0,80 250 0,70 0,80 0,90 1,00 300 0,80 0,90 1,00 1,10 1,20 400 1,00 1,10 1,20 1,30 1,40 1,60 500 1,30 1,40 1,50 1,60 1,80 2,00 600 1,50 1,60 1,70 1,80 2,
36、00 2,20 2,40 800 2,00 2,10 2,20 2,40 2,60 2,80 3,20 1000 2,50 2,60 2,80 3,00 3,20 3,60 4,00 1200 3,00 3,20 3,40 3,60 4,00 4,40 4,80 1400 3,60 3,80 4,00 4,40 4,80 5,20 1600 4,00 4,20 4,40 4,80 5,20 5,60 1800 4,60 4,80 5,20 5,60 6,00 2000 5,00 5,20 5,60 6,00 6,40EN14239:2004(E) 11 Bibliography EN1505,
37、VentilationforbuildingsSheetmetalairductsandfittingswithrectangularcrosssection Dimensions. EN1506,VentilationforbuildingsSheetmetalairductsandfittingswithcircularcrosssection Dimensions. prEN1507, VentilationforbuildingsSheetmetalairductswithrectangularsectionRequirementsfor strengthandleakage. EN1
38、2237, VentilationforbuildingsDuctworkStrengthandleakageofcircularsheetmetalducts.BS EN 14239:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europ
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