1、BRITISH STANDARD BS EN 12412-4:2003 Thermal performance of windows, doors and shutters Determination of thermal transmittance by hot box method Part 4: Roller shutter boxes The European Standard EN 12412-4:2003 has the status of a British Standard ICS 91.060.50 BS EN 12412-4:2003 This British Standa
2、rd, was published under the authority of the Standards Policy and Strategy Committee on 19 August 2003 BSI 19 August 2003 ISBN 0 580 42480 4 National foreword This British Standard is the official English language version of EN 12412-4:2003. The UK participation in its preparation was entrusted by T
3、echnical Committee B/540, Energy performance of materials, components and buildings, to Subcommittee B/540/1, European Standards for thermal insulation, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-refere
4、nces 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 Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British
5、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 Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to
6、 the responsible international/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 front cover, an inside
7、 front cover, the EN title page, pages 2 to 37 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN124124 July2003 ICS91.060.50 En
8、glishversion Thermalperformanceofwindows,doorsandshutters DeterminationofthermaltransmittancebyhotboxmethodPart 4:Rollershutterboxes Performancethermiquedesfentres,portesetfermetures Dterminationducoefficientdetransmissionthermiquepar lamthodedelabotechaudePartie4:Coffresdevolets roulants Wrmetechni
9、schesVerhaltenvonFenstern,Trenund AbschlssenBestimmungdes Wrmedurchgangskoeffizientenmittelsdes HeizkastenverfahrensTeil4:Rolladenksten ThisEuropeanStandardwasapprovedbyCENon2May2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Sta
10、ndardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytr
11、a nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherl
12、ands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMe
13、mbers. Ref.No.EN124124:2003EEN124124:2003(E) 2 Contents Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4 3 Terms,definitions,symbols,unitsandsubscripts. .5 4 Principle6 5 Requirementsfortestspecimenandapparatus 6 5.1 General6 5.2 Surroundpanels. 6 5.3 Specimenrequirementsandlocation 6 5.4
14、 Calibrationpanels 8 5.5 Temperaturemeasurementandbaffleposition. .8 5.6 Airflowmeasurements . 9 6 Testprocedure .9 6.1 General9 6.2 Calibrationmeasurements 9 6.2.1 General9 6.2.2 Totalsurfaceresistance 9 6.2.3 Surfaceresistanceandsurfacecoefficientsofheattransfer .10 6.2.4 Surroundpanelandedgecorre
15、ctions. 12 6.3 Measurementprocedurefortestspecimens 13 7 Testreport . .16 AnnexA (normative) Determinationoftheenvironmentaltemperature .17 A.1 General17 A.2 Environmentaltemperature . .18 A.3 Meanradianttemperature .18 A.4 Convectivesurfaceheattransfercoefficient 20 AnnexB (normative) Linearthermal
16、transmittanceoftheedgezone.21 AnnexC (informative) Exampleofcalibrationtestandmeasurementoftheshutterboxspecimen .27 C.1 Calibrationtestwithpanelsize1,23m 1,48m.27 C.2 Rollershutterboxspecimenmeasurement. .33EN124124:2003(E) 3 Foreword ThisdocumentEN124124:2003hasbeenpreparedbyTechnicalCommitteeCEN/
17、TC89,“Thermalperformance ofbuildingsandbuildingcomponents“,thesecretariatofwhichisheldbySIS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJanuary2004,andconflictingnationalstandardsshallbewithdrawnatthelatest byJanuary
18、2004. Thisstandardisoneofaseriesofstandardsoncalculationandmeasurementmethodsforthedesignand evaluationofthethermalperformanceofbuildingsandbuildingcomponents. AnnexesAandBarenormative. AnnexCisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing
19、countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN124124:2003(E) 4 Introduction Themethoddescribedint
20、hisEuropeanStandardprovidesdatathatcanbeusedforcalculatingtheoverallthermal performanceofwindowsanddoorsequippedwithrollershuttersaccordingtoEN ISO 100771, Thermal performanceofwindows,doorsandshuttersCalculationofthermaltransmittancePart1:Simplifiedmethod (ISO100771:2000) . 1Scope ThisEuropeanStand
21、ardspecifiesamethod,basedonENISO8 990andENISO125671,tomeasuretheoverall thermaltransmittanceofarollershutterboxinahotbox.Thisincludesalleffectsofgeometricalandmaterial characteristicsinatestspecimen. Edgeeffectsoccurringoutsideoftheperimeterofthespecimenareexcluded.Furthermore,energytransferdueto so
22、larradiationisnottakenintoaccount,andairleakageisexcluded. Themethodisdesignedtoprovidebothstandardisedtestswhichenableafaircomparisonofdifferentproductsto bemade,andspecifictestsonproductsforpracticalapplicationpurposes.Theformerincludeswindow standardisedspecimensizesandappliedtestcriteria. Thedet
23、erminationoftheoverallthermaltransmittanceisperformedforconditionswhichwillcorrespondtoasimilar situationoftherollershutterboxinpractice. InformationonthedesignofthecalibrationtransferstandardisgiveninENISO125671. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provis
24、ionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencest
25、helatesteditionofthe publicationreferredtoapplies(includingamendments). EN19464, ThermalperformanceofbuildingproductsandcomponentsSpecificcriteriafortheassessmentof laboratoriesmeasuringheattransferpropertiesPart4:Measurementsbyhotboxmethods. prEN12519:1996, WindowsanddoorsTerminology. EN12664,Therm
26、alperformanceofbuildingmaterialsandproductsDeterminationofthermalresistanceby meansofguardedhotplateandheatflowmetermethodsDryandmoistproductsofmediumandlowthermal resistance. ENISO7345:1995, ThermalinsulationPhysicalquantitiesanddefinitions(ISO7345:1987). ENISO8990:1996, ThermalinsulationDeterminat
27、ionofsteadystatethermaltransmissionproperties Calibratedandguardedhotbox(ISO8990:1994). ENISO9288:1996, ThermalinsulationHeattransferbyradiationPhysicalquantitiesanddefinitions (ISO9288:1989). ENISO125671:2000, ThermalperformanceofwindowsanddoorsDeterminationofthermaltransmittanceby hotboxmethodPart
28、1:Completewindowsanddoors(ISO125671:2000).EN124124:2003(E) 5 3 Terms,definitions,symbols,unitsandsubscripts 3.1 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninENISO7345:1995, ENISO8990:1996,ENISO 9288:1996andprEN12519:1996apply. 3.2 Symbolsandunits Symb ol Quan
29、tity Unit A area m 2 F convectivefraction - R thermalresistance m 2 K/W T thermodynamictemperature K U thermaltransmittance W/(m 2 K) d thicknessordepth m f viewfactor - h surfacecoefficientofheattransfer W/(m 2 K) L perimeterlength m l length m q densityofheatflowrate W/m 2 D q , D T temperaturedif
30、ference K L thermalconductance W/(m 2 K) a radiationfactor - F heatflowrate W e hemisphericalemissivity - s StefanBoltzmannconstant W/(m 2 K 4 ) q Celsiustemperature C Y linearthermaltransmittance W/(m K) w width m v airvelocity m/s l thermalconductivity W/(m K) 3.3Subscripts b baffle c convective c
31、a calibration e external,usuallycoldside ed edgezone fi infillwithknownthermalproperties hb hotbox i internal,usuallyhotside in input m measured me average n environmental(ambient)EN124124:2003(E) 6 ne environmental(external) ni environmental(internal) p revealofsurroundpanel r radiation(mean) s sur
32、face sb rollershutterbox sp specimen sur surroundpanel t total 4Principle TestsarecarriedoutusingthecalibratedorguardedhotboxinaccordancewithENISO8990andENISO12567 1.Dependingontheheightofthebox,rollershutterboxeslocatedinpairsofthesametypeofconstruction equippedwithmasks(simulationofwindowframes)fo
33、rmthetestspecimen. Thesurroundpanelisusedtokeepthespecimeninposition.Itisconstructedwithouterdimensionsofappropriate sizefortheapparatus,havinganaperturetoaccommodatethespecimen(seeFigures1and2). Theprincipalheatflowsthroughthesurroundpanelandthecalibrationpanel(ortestspecimen)areshownin Figure3.The
34、boundaryedgeheatflowduetothelocationofthecalibrationpanelinthesurroundpanelis determinedseparatelybyalinearthermaltransmittance Y . Theprocedureinthisstandardincludesacorrectionfortheboundaryedgeheatflow,sothatstandardizedand reproduciblethermaltransmittancepropertiesareobtained. Themagnitudeofthebo
35、undaryedgeheatflowasafunctionofgeometry,calibrationpanelthicknessandthermal conductivityisdeterminedbytabulatedvaluesgiveninannexB. 5 Requirementsfortestspecimenandapparatus 5.1General ThetestapparatusshallconformtotherequirementsspecifiedinEN19464,ENISO8990andENISO125671. 5.2Surround panels Fordeta
36、ilssee5.2ofENISO125671:2000. 5.3 Specimenrequirementsandlocation Therollershutterboxesshallbeatleast1230mmlongandshallbemountedhorizontallyintheaperture(see Figure1).Fortestspecimenswithmetallicbaresurfaces,theinnerandoutersurfacesshouldbetreatedbycoating inordertoachieveanemissivityofatleast0,8.Any
37、variationsfromthisvaluehavetobejustified.Adjacentroller shutterboxeslocatedinpairslyingontopofeachotherareseparatedbyinsulatingpanels(infillelements).These panelsshallbemadefrommaterialwiththermalconductivitylessthan0,035W/(m K)andshallbeatleast150mm highand60mmthick.Thethermalconductivityoftheinsul
38、atinginfillelementsshallbeobtainedbymeasurement accordingtoEN 12664(guardedhotplateapparatus)orbyusingpanelswithcertifiedpropertiesfroman accreditedsource. ThermocouplestomeasurethesurfacetemperatureshallbeplacedasshowninFigure2. ForfurtherinformationrefertoENISO125671.EN124124:2003(E) 7 Dimensionsi
39、nmillimetres Key 1 Surroundpanel 4 Rollershutterbox 2 Temperaturesensors 5 Warmside 3 Panel(infillelement) 6 Coldside Figure1Rollershutterboxesinsurroundpanel Itisimportantthatthisinfillelementislocatedinthesamepositionasthewindowshutterboxwouldbeinpractice. Thesurroundpanelshallalwaysbethickerthant
40、hedepthoftheshutterboxsothattheshutterboxdoesnot protrudeoneitherside. Therollershutterboxesshallbetestedasusedinpracticeduringthenighttime,i.e.withrollershuttersrolled down.EN124124:2003(E) 8 Therollershuttersshallbeshortenedtothelast4to7slats.Thelastslatofeachshutterboxshallbetakentothe outsideand
41、tapedtotheinsulatingpanel. Ifthespecimenareaformslessthan30%oftheapertureareaofthehotbox,twoormoreshutterboxesshallbe installedsothatthetotalspecimenareaisatleast30%oftheaperturearea,withatleast150mmbetweenthe pairofshutterboxes(seeFigure1). 5.4 Calibrationpanels Thecalibrationpanelshallbemountedass
42、howninFigure3.Forfurtherdetailssee5.4and5.5ofENISO12 567 1:2000. 5.5 Temperaturemeasurementandbaffleposition Forfurtherdetailssee5.5ofENISO125671:2000. ThepositionofthetemperatureandtheairspeedsensorsareshowninFigure2. Dimensionsinmillimetres Key A Verticalsection 3 Surroundpanel B Faceelevation 4 I
43、nfillelement 1 Coldsidebaffle 5 Thermocouple 2 Warmsidebaffle 6 Airspeedsensor Figure2LocationsoftemperatureandairspeedsensorsduringmeasurementEN124124:2003(E) 9 5.6Air flow measurements See5.6ofENISO125671:2000. 6 Testprocedure 6.1General Exceptasprovidedherein,thetestprocedureshallconformwiththerequirementsaccordingto6.2and6.3of ENISO125671:2000.AnexampleofthecalculationsrequiredisgiveninannexC. 6.2Calibration measurements 6.2.1General Calibrationmeasurementsarerequiredtoensurethatsuitabletestconditionsaresetupandthatthesurround panelheatflowandsurfaceheattransfercoefficientscanbeful
