1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIBRITISH 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
2、has the status of a British Standard ICS 81.040.20 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIBS EN 1279-2:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy
3、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 language version of EN 1279-2:2002. The UK participation in its preparation
4、 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 obtained on request to its secretary. Cross-references The British Standard
5、s 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 Standards Online. This pu
6、blication 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 the responsible internat
7、ional/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 front cover, the EN titl
8、e 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 Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy
9、, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN12792 November2002 ICS81.040.20 Englishversion GlassinbuildingInsulatingglassunitsPart2:Longtermtest methodandrequirementsformoisturepenetration VerredanslaconstructionVitrageisolantprfabriqu scellPartie2:Mthodedessaidelonguedureet exigencese
10、nmatiredepntrationdhumidit GlasimBauwesenMehrscheibenIsolierglasTeil2: LangzeitprfverfahrenundAnforderungenbezglich Feuchtigkeitsaufnahme ThisEuropeanStandardwasapprovedbyCENon5September2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurop
11、e an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguage
12、madebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherl
13、ands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.
14、No.EN12792:2002E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIEN12792:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions,abbreviationsandsymbols .5 3.1 Termsanddefinitions. .5 3.2 Abbreviatio
15、ns .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 Climateconditionsincabinet. 7 5.3 Number,descriptionandselectionofthetestspecimens. .9 5.4 Procedure .10 6 Methodsofmeasurement .11 6.1 Measurementof
16、dewpointtemperature 11 6.2 Measurementofmoisturecontent . 11 6.2.1 General11 6.2.2 Moisturecontentofdesiccantinbulk . 11 6.2.3 Moisturecontentofdesiccantincorporatedinorganicspacer 12 6.2.4 Moisturecontentininsulatingglassunitswithoutdesiccant 12 7 Testreport . .14 AnnexA (normative) Referencemethod
17、fordewpointtemperaturemeasurement .15 A.1 General15 A.2 Apparatusandmaterials. 15 A.3 Procedure .15 AnnexB (normative) Moisturecontentmeasurementaccordingtothe950Cdryingmethod 17 B.1 Applicability17 B.2 Apparatus,materialsandpreparatorywork . 17 B.3 Initialandfinalmoisturecontent 18 B.4 Standardmois
18、tureadsorptioncapacity. .20 AnnexC (normative) MoisturecontentmeasurementaccordingtotheKarlFischermethod 21 C.1 Applicability21 C.2 Apparatus,materialsandpreparatorywork . 21 C.3 Initialandfinalmoisturecontent 22 C.4 Standardmoistureadsorptioncapacity. .25 AnnexD (normative) Establishingthestandardm
19、oistureadsorptioncapacityofdesiccants .27 D.1 General27 D.2 Appropriateinformation. .27 D.3 Generallyacceptedvaluesfordesiccantinbulk. .28 D.4 Desiccantmanufacturing. .28 Bibliography 29 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) B
20、SIEN12792:200 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 ticaltextor byendorse
21、ment,atthelatestbyMay2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby May2 003. Thedescribed testingis partof type evaluationof insulating glassunits. ThisEurop ean Standard “GlassinBuildingInsulatingglassunits ”consistsofthefollowingParts: Part1:Generalities,dimensionaltolerancesan
22、drulesforthesystemdescription. Part2:Longtermtestmethodandrequirementsformoisturepenetration. Part3:Longtermtestmethodandrequirementsforgasleakagerateandforgasconcentrationtolerances. Part4:Methodsoftestforthephysicalattributesofedgeseals. Part5:EvaluationofConformity. Part6:Factoryproductioncontrol
23、andperiodictests. Theannexes At o Dar e normative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuro peanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malt
24、a,Netherlands,Norway,Portugal,Spain, Sweden, Switzerland and the UnitedKin gdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIEN12792:2002(E) 4 1Scope ThisEuropeanStandardspecifiesrequirementsformoisturepenetrationandthelongtermte
25、stmethodfor insulatingglassunitsandensuresbymeansofanadequateevaluationofconformitytothisstandardthatover time: energysavingsaremadebecausethe Uvalueandsolarfactordonotchangesignificantly; healthispreservedbecausesoundreductionandvisiondonotchangesignificantly; safetyisprovidedbecausemechanicalresis
26、tancedoesnotchangesignificantly. Itcoversadditionalcharacteristicsthatareofimportancefortrade.Markingconditionsareincluded. Forglassproductswithelectricalwiringorconnectionsfore.g.alarmorheatingpurposes,thisstandardcovers onlywiringsubjectforelectricalpotentialdifferencetoearthlessthan50Va.c.orlesst
27、han75Vd.c. Themainintendedusesoftheinsulatingglassunitsareinstallationsinbuildingsandconstructionssuchasin windows,doors,curtainwalling,roofsandpartitionswherethereexistsprotectionagainstdirectultravioletradiation attheedges. NOTE1 Incaseswherethereisnoprotectionagainstdirectultravioletradiationatth
28、eedges,suchasstructuralsealant glazingsystems,additionalEuropeantechnicalspecificationsshouldbefollowed. NOTE2 Unitswherethenatureisonlyartisticarenotpartofthisstandard. ThisPartofthisstandard,whichisinextricablyboundupwiththeotherPartsofthisstandard,coversthemoisture penetrationbytestingasonemeanso
29、fverifyingwhetheraproductmadeinaccordancewithitssystemdescription conformswiththerelevantaspectofthedefinitiononinsulatingglassunits. 2 Normativereferences ThisEuropeanStandardincorporates,bydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplac
30、esinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedbyamendmentorrevision.Forundatedreferences,thelatesteditionofthe publicationreferredtoapplies(includingamendments). EN5721, Gl
31、assinBuildingBasicsodalimesilicateglassproductsPart1:Definitionsandgeneralphysicaland mechanicalproperties. EN5722, GlassinBuildingBasicsodalimesilicateglassproductsPart2:Floatglass. prEN12791:1998, GlassinBuildingInsulatingglassunitsPart1:Generalities,dimensionaltolerancesandrules forthesystemdescr
32、iption. EN12793, GlassinBuildingInsulatingglassunitsPart3:Longtermtestmethodandrequirementsforgas leakagerateandforgasconcentrationtolerances. EN12794, GlassinBuildingInsulatingglassunitsPart4:Methodsoftestforthephysicalattributesofedge seals. ISO760, DeterminationofwaterKarlFischermethod(Generalmet
33、hod). Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIEN12792:2002(E) 5 3 Termsanddefinitions,abbreviationsandsymbols 3.1 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninprEN12791:1998togetherwit
34、hthe followingapply. 3.1.1 standardlaboratoryconditions ambienttemperatureof(232)Candarelativehumidityof(505)% 3.1.2 standardmoistureadsorptioncapacity capacityofadesiccantmaterialtoadsorbaquantityofmoistureundercontrolledlimitenvironmentconditions 3.1.3 controlledlimitenvironmentconditions environm
35、enttemperature10Cwithadewpointtemperatureof5C,givingarelativehumidityof32,8% 3.1.4 moisturepenetrationindex amountofdryingcapacityconsumedafterstandardisedageingconditions 3.1.5 accuracy precisionofthetestmethoditselfwithinconfidencelimitsof99% 3.2Abbreviations r.h. relativehumidity 3.3Symbols I Moi
36、sturepenetrationindex(canbeexpressedindecimalorinpercentageterms); I av Averagevalueofthemoisturepenetrationindices I,obtainedoverfivemeasurements; m o Massofdishwhenempty,cleananddry; m c Massofdishplusdesiccantpluswateradsorbedfromr.h.of32%air; m f Massofdishplusdesiccantpluswaterinitiallyadsorbed
37、pluswateradsorbedwhensubjectedtotheclimate conditionsinthecabinet; m i Massofdishplusdesiccantpluswaterinitiallyadsorbed; m r Massofdishplusdesiccantpluswateradsorbedinequilibriumwithadefinedreferencelevelofrelative humidityofair,ordishplusdrieddesiccantathightemperatures; M m Massofdesiccantinmixtu
38、reswithnondesiccantmaterial; M t Totalmassofdesiccantwhen,forthepurposeoftesting,inamixturewithnondesiccantmaterial,thenon desiccantmaterialisreplacedbythesamevolumeofdesiccant; R Ratiobetweenthemassesofdesiccant M m and M t; Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre,
39、07 April 2003, Uncontrolled Copy, (c) BSIEN12792:2002(E) 6 T c Standardmoistureadsorptioncapacityofdesiccant; T c,av Averagestandardmoistureadsorptioncapacityofdesiccant T c obtainedovertwomeasurements; T f Finalmoisturecontentofdesiccant; T f,u Uncorrectedfinalmoisturecontentofdesiccant; T i Initia
40、lmoisturecontentofdesiccant; T i,av Averageinitialmoisturecontentofdesiccant T i obtainedoverfourmeasurements; T i,u Uncorrectedinitialmoisturecontentofdesiccant; Q Temperatureoftestspecimensintestcabinet; Q c Temperatureofthecentraltestspecimenintestcabinetduringconstanttemperaturephase; Q h Highte
41、mperatureofthecentraltestspecimeninthetestcabinetduringthehighhumidity/temperaturecycling phase; Q l Lowtemperatureofthecentraltestspecimeninthetestcabinetduringthehighhumidity/temperaturecycling phase; Q s Temperatureofthecentraltestspecimeninthetestcabinetasthecyclemovesbetweenhightemperature andl
42、owtemperatureandviceversa. 4Requirements 4.1 Moisturepenetrationindex Insulatingglassunitsshallfulfiltheirfunctionsduringaneconomicallyreasonableworkinglife.Thereforethe followingvaluesareverifiedontestspecimenssubmittedtotheclimatetestdescribedinthisPartofthestandard: Theaveragemoisturepenetrationi
43、ndex I av overthefivetestspecimenshallnotexceed0,20. Althoughbreakageoftheglassdoesnotconstitutefailure,theaveragemoisturepenetrationindex I av shallbethe averageovernotlessthan,andnomorethan,fiveunits.Spareunitsshallbeusedinsteadofthebrokentest specimens. Theunitwiththehighestmoisturepenetrationind
44、exshallhaveanindexvalue Inotexceeding0,25. 4.2 Edgesealstrength Fortherequirementsonedgesealstrength,refertoEN12794. 4.3 Gasleakagerate Whenthesystemdescriptionincludesgasfilledinsulatingglassunits,foradditionaltestingandrequirementson gasleakagerate,refertoEN12793. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 07 April 2003, Uncontrolled Copy, (c) BSIEN12792:2002(E) 7 5 Methodoftest 5.1Principle Setsof
