EN 1279-2-2002 en Glass in building Insulating glass units Part 2 Long term test method and requirements for moisture penetration《建筑玻璃 隔离玻璃装置 第2部分 透潮性长期试验方法和要求》.pdf

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1、BRITISH STANDARD BS EN 1279-2:2002 Glass in building Insulating glass units Part 2: Long term test method and requirements for moisture penetration The European Standard EN 1279-2:2002 has the status of a British Standard ICS 81.040.20 BS EN 1279-2:2002 This British Standard, having been prepared un

2、der the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 8 January 2003 BSI 8 January 2003 ISBN 0 580 41079 X National foreword This British Standard is the official English langu

3、age version of EN 1279-2:2002. The UK participation in its preparation was entrusted by Technical Committee B/520, Glass and glazing in building, to Subcommittee B/520/2, Insulating glass products, which has the responsibility to: A list of organizations represented on this subcommittee can be obtai

4、ned 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 entitled “International Standards Correspondence Index”, or by using the “Search” facility o

5、f 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 Standard does not of itself confer immunity from legal obligations. aid

6、 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 European developments and promulgate them in the UK. Summary of pages Thi

7、s document comprises a front cover, an inside front cover, the EN title page, pages 2 to 29 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 EUROP

8、ISCHENORM EN12792 November2002 ICS81.040.20 Englishversion GlassinbuildingInsulatingglassunitsPart2:Longtermtest methodandrequirementsformoisturepenetration VerredanslaconstructionVitrageisolantprfabriqu scellPartie2:Mthodedessaidelonguedureet exigencesenmatiredepntrationdhumidit GlasimBauwesenMehrs

9、cheibenIsolierglasTeil2: LangzeitprfverfahrenundAnforderungenbezglich Feuchtigkeitsaufnahme ThisEuropeanStandardwasapprovedbyCENon5September2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwitho

10、utanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCE

11、NmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerlanda

12、ndUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN12792:2002EEN12792:2002(E) 2 Contents pag

13、e Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions,abbreviationsandsymbols .5 3.1 Termsanddefinitions. .5 3.2 Abbreviations .5 3.3 Symbols 5 4 Requirements .6 4.1 Moisturepenetrationindex .6 4.2 Edgesealstrength .6 4.3 Gasleakagerate 6 5 Methodoftest 7 5.1 Principle7 5.2 Climatecond

14、itionsincabinet. 7 5.3 Number,descriptionandselectionofthetestspecimens. .9 5.4 Procedure .10 6 Methodsofmeasurement .11 6.1 Measurementofdewpointtemperature 11 6.2 Measurementofmoisturecontent . 11 6.2.1 General11 6.2.2 Moisturecontentofdesiccantinbulk . 11 6.2.3 Moisturecontentofdesiccantincorpora

15、tedinorganicspacer 12 6.2.4 Moisturecontentininsulatingglassunitswithoutdesiccant 12 7 Testreport . .14 AnnexA (normative) Referencemethodfordewpointtemperaturemeasurement .15 A.1 General15 A.2 Apparatusandmaterials. 15 A.3 Procedure .15 AnnexB (normative) Moisturecontentmeasurementaccordingtothe950

16、Cdryingmethod 17 B.1 Applicability17 B.2 Apparatus,materialsandpreparatorywork . 17 B.3 Initialandfinalmoisturecontent 18 B.4 Standardmoistureadsorptioncapacity. .20 AnnexC (normative) MoisturecontentmeasurementaccordingtotheKarlFischermethod 21 C.1 Applicability21 C.2 Apparatus,materialsandpreparat

17、orywork . 21 C.3 Initialandfinalmoisturecontent 22 C.4 Standardmoistureadsorptioncapacity. .25 AnnexD (normative) Establishingthestandardmoistureadsorptioncapacityofdesiccants .27 D.1 General27 D.2 Appropriateinformation. .27 D.3 Generallyacceptedvaluesfordesiccantinbulk. .28 D.4 Desiccantmanufactur

18、ing. .28 Bibliography 29EN12792:200 2( E) 3 Foreword Thisdocu ment(EN12 792: 2002) has been prepared by Technical CommitteeCEN/ TC 129 “Glassi n building“, the secretariat of which ish eld by IBN. This EuropeanSt andard shall be giventh e status of a nationalst andard, either by publication ofaniden

19、 ticaltextor byendorsement,atthelatestbyMay2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby May2 003. Thedescribed testingis partof type evaluationof insulating glassunits. ThisEurop ean Standard “GlassinBuildingInsulatingglassunits ”consistsofthefollowingParts: Part1:Generalities,d

20、imensionaltolerancesandrulesforthesystemdescription. Part2:Longtermtestmethodandrequirementsformoisturepenetration. Part3:Longtermtestmethodandrequirementsforgasleakagerateandforgasconcentrationtolerances. Part4:Methodsoftestforthephysicalattributesofedgeseals. Part5:EvaluationofConformity. Part6:Fa

21、ctoryproductioncontrolandperiodictests. Theannexes At o Dar e normative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuro peanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland

22、,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden, Switzerland and the UnitedKin gdom.EN12792:2002(E) 4 1Scope ThisEuropeanStandardspecifiesrequirementsformoisturepenetrationandthelongtermtestmethodfor insulatingglassunitsandensuresbymeansofanadequateevaluationofconformitytothisstand

23、ardthatover time: energysavingsaremadebecausethe Uvalueandsolarfactordonotchangesignificantly; healthispreservedbecausesoundreductionandvisiondonotchangesignificantly; safetyisprovidedbecausemechanicalresistancedoesnotchangesignificantly. Itcoversadditionalcharacteristicsthatareofimportancefortrade.

24、Markingconditionsareincluded. Forglassproductswithelectricalwiringorconnectionsfore.g.alarmorheatingpurposes,thisstandardcovers onlywiringsubjectforelectricalpotentialdifferencetoearthlessthan50Va.c.orlessthan75Vd.c. Themainintendedusesoftheinsulatingglassunitsareinstallationsinbuildingsandconstruct

25、ionssuchasin windows,doors,curtainwalling,roofsandpartitionswherethereexistsprotectionagainstdirectultravioletradiation attheedges. NOTE1 Incaseswherethereisnoprotectionagainstdirectultravioletradiationattheedges,suchasstructuralsealant glazingsystems,additionalEuropeantechnicalspecificationsshouldb

26、efollowed. NOTE2 Unitswherethenatureisonlyartisticarenotpartofthisstandard. ThisPartofthisstandard,whichisinextricablyboundupwiththeotherPartsofthisstandard,coversthemoisture penetrationbytestingasonemeansofverifyingwhetheraproductmadeinaccordancewithitssystemdescription conformswiththerelevantaspec

27、tofthedefinitiononinsulatingglassunits. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorr

28、evisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedbyamendmentorrevision.Forundatedreferences,thelatesteditionofthe publicationreferredtoapplies(includingamendments). EN5721, GlassinBuildingBasicsodalimesilicateglassproductsPart1:Definitionsandgeneralphysicaland mechanic

29、alproperties. EN5722, GlassinBuildingBasicsodalimesilicateglassproductsPart2:Floatglass. prEN12791:1998, GlassinBuildingInsulatingglassunitsPart1:Generalities,dimensionaltolerancesandrules forthesystemdescription. EN12793, GlassinBuildingInsulatingglassunitsPart3:Longtermtestmethodandrequirementsfor

30、gas leakagerateandforgasconcentrationtolerances. EN12794, GlassinBuildingInsulatingglassunitsPart4:Methodsoftestforthephysicalattributesofedge seals. ISO760, DeterminationofwaterKarlFischermethod(Generalmethod).EN12792:2002(E) 5 3 Termsanddefinitions,abbreviationsandsymbols 3.1 Termsanddefinitions F

31、orthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninprEN12791:1998togetherwiththe followingapply. 3.1.1 standardlaboratoryconditions ambienttemperatureof(232)Candarelativehumidityof(505)% 3.1.2 standardmoistureadsorptioncapacity capacityofadesiccantmaterialtoadsorbaquantityofmoistureund

32、ercontrolledlimitenvironmentconditions 3.1.3 controlledlimitenvironmentconditions environmenttemperature10Cwithadewpointtemperatureof5C,givingarelativehumidityof32,8% 3.1.4 moisturepenetrationindex amountofdryingcapacityconsumedafterstandardisedageingconditions 3.1.5 accuracy precisionofthetestmetho

33、ditselfwithinconfidencelimitsof99% 3.2Abbreviations r.h. relativehumidity 3.3Symbols I Moisturepenetrationindex(canbeexpressedindecimalorinpercentageterms); I av Averagevalueofthemoisturepenetrationindices I,obtainedoverfivemeasurements; m o Massofdishwhenempty,cleananddry; m c Massofdishplusdesicca

34、ntpluswateradsorbedfromr.h.of32%air; m f Massofdishplusdesiccantpluswaterinitiallyadsorbedpluswateradsorbedwhensubjectedtotheclimate conditionsinthecabinet; m i Massofdishplusdesiccantpluswaterinitiallyadsorbed; m r Massofdishplusdesiccantpluswateradsorbedinequilibriumwithadefinedreferencelevelofrel

35、ative humidityofair,ordishplusdrieddesiccantathightemperatures; M m Massofdesiccantinmixtureswithnondesiccantmaterial; M t Totalmassofdesiccantwhen,forthepurposeoftesting,inamixturewithnondesiccantmaterial,thenon desiccantmaterialisreplacedbythesamevolumeofdesiccant; R Ratiobetweenthemassesofdesicca

36、nt M m and M t;EN12792:2002(E) 6 T c Standardmoistureadsorptioncapacityofdesiccant; T c,av Averagestandardmoistureadsorptioncapacityofdesiccant T c obtainedovertwomeasurements; T f Finalmoisturecontentofdesiccant; T f,u Uncorrectedfinalmoisturecontentofdesiccant; T i Initialmoisturecontentofdesiccan

37、t; T i,av Averageinitialmoisturecontentofdesiccant T i obtainedoverfourmeasurements; T i,u Uncorrectedinitialmoisturecontentofdesiccant; Q Temperatureoftestspecimensintestcabinet; Q c Temperatureofthecentraltestspecimenintestcabinetduringconstanttemperaturephase; Q h Hightemperatureofthecentraltests

38、pecimeninthetestcabinetduringthehighhumidity/temperaturecycling phase; Q l Lowtemperatureofthecentraltestspecimeninthetestcabinetduringthehighhumidity/temperaturecycling phase; Q s Temperatureofthecentraltestspecimeninthetestcabinetasthecyclemovesbetweenhightemperature andlowtemperatureandviceversa.

39、 4Requirements 4.1 Moisturepenetrationindex Insulatingglassunitsshallfulfiltheirfunctionsduringaneconomicallyreasonableworkinglife.Thereforethe followingvaluesareverifiedontestspecimenssubmittedtotheclimatetestdescribedinthisPartofthestandard: Theaveragemoisturepenetrationindex I av overthefivetests

40、pecimenshallnotexceed0,20. Althoughbreakageoftheglassdoesnotconstitutefailure,theaveragemoisturepenetrationindex I av shallbethe averageovernotlessthan,andnomorethan,fiveunits.Spareunitsshallbeusedinsteadofthebrokentest specimens. Theunitwiththehighestmoisturepenetrationindexshallhaveanindexvalue In

41、otexceeding0,25. 4.2 Edgesealstrength Fortherequirementsonedgesealstrength,refertoEN12794. 4.3 Gasleakagerate Whenthesystemdescriptionincludesgasfilledinsulatingglassunits,foradditionaltestingandrequirementson gasleakagerate,refertoEN12793.EN12792:2002(E) 7 5 Methodoftest 5.1Principle Setsofinsulati

42、ngglassunitsareexposedtoaclimatetest.Theinitialandfinaldewpointandtheinitialandfinal moisturecontent,asapplicable,aremeasuredandthemoisturepenetrationindexiscalculated. 5.2 Climateconditionsincabinet Thehighhumidity/temperaturetestprocedureconsistsoftwoparts.Theclimateconditioninthecabinetcomprises

43、asafirstpart56temperaturecyclesof12hfrom18Cto+53Cwithslopesof14C/h,followedbyasecondpart comprisingconstanttemperatureof+58Cforsevenweeks.Highhumidityshallbeasdescribed. Theexactspecificationsofthetemperature,humidityandtime,andtheirtolerances,aregiveninFigures1and2. Key 1 56temperaturecyclesof12h(isfourweeks) 2 Intervalof2hto4hformovingtestpiecesfromonecabinettoasecondcabinetwhentwocabinetsareused 3 (11764)h(sevenweeks)constanttemperatureandarelativehumidityofr.h. 95%.Condensationontest specimenisallowed Figure1Overviewofclimateconditionsincabinet. QQ