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1、ENISO29461-4April2025EUROPEANSTANDARDNORMEEUROPEENNEEuropaischenormICS29.160.99EnglishVersionAirintakefiltersystemsforrotarymachinery-Part4:Testmethodsforstaticfiltersystemsincoastalandoffshoreenvironments(ISO29461-4:2025)Systemesdefiltrationdaird,admissionpourmachinestournantes-Partie4:Methodesdess
2、aidessystemesdefiltrationStatiqueenmilieucotieretoffshore(ISO29461-4:2025)AnsaugfiltersystemevonRotationsmaschinen-Priifverfahren-Teil4:PriifverfahrenfiirStatischeFiltersystemeinMeeres-undOffshore-Umgebungen(ISO29461-4:2025)ThisEuropeanStandardwasapprovedbyCENon28March2025.CENmembersareboundtocomply
3、withtheCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCEN-CENELECManagementCentreortoanyCENmember.ThisEurop
4、eanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCEN-CENELECManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bul
5、garia,Croatia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandUnitedKingdom.富EUROPEANCOM
6、MITTEEFORSTANDARDIZATIONCOMITEEUROPEENDENORMALISATIONEuropaischeskomiteefurnormungCEN-CENELECManagementCentre:RuedelaScience23,B-1040Brussels2025CENAllrightsofexploitationinanyformandbyanymeansreservedRef.No.ENISO29461-4:2025EworldwideforCENnationalMembers.EuropeanforewordThisdocument(ENISO29461-4:2
7、025)hasbeenpreparedbyTechnicalCommitteeISO/TC142CleaningequipmentforairandothergasesincollaborationwithTechnicalCommitteeCEN/TC195CleaningequipmentforairandothergasesthesecretariatofwhichisheldbyUNLThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbye
8、ndorsement,atthelatestbyOctober2025,andconflictingnationalstandardsshallbewithdrawnatthelatestbyOctober2025.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CENshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anyfeedbackandquestionsonthi
9、sdocumentshouldbedirectedtotheusersnationalstandardsbody/nationalcommittee.AcompletelistingofthesebodiescanbefoundontheCENwebsite.AccordingtotheCEN-CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Bulgaria,Croa
10、tia,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,RepublicofNorthMacedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TiirkiyeandtheUnitedKingdom.EndorsementnoticeTh
11、etextofISO29461-4:2025hasbeenapprovedbyCENasENISO29461-4:2025withoutanymodification.ContentsPageForewordvIntroductionvi1 Scope12 Normativereferences13 Termsanddefinitions13.1 Airflows23.2 Efficiencies24 Symbolsandabbreviatedterms25 Principle36 Testrigandequipment36.1 Testrig36.2 Testduct46.2.1 Testr
12、iglayout46.2.2 Testairconditioning56.2.3 Measurementoftheairflowrate56.2.4 Measurementofpressuredrop56.2.5 Solidsaltaerosolmixingsection56.2.6 Measurementoftemperatureandrelativehumidity56.3 Measurementequipment56.3.1 Testriginstrumentation56.3.2 Sodiumflamephotometer66.4 Solidsaltaerosolsampling76.
13、4.1 Sampleprobes76.4.2 Samplingairflow.76.5 Solidsaltaerosolgeneration76.5.1 Saltgeneration76.5.2 Aerosolinjection76.6 Waterspraydevice76.7 Watercollectiondevice.77 Qualificationoftestrigandapparatus87.1 Pressuresystemtesting87.2 Solidsaltaerosoluniformity87.2.1 Aerosoluniformityparameters87.2.2 Aer
14、osoluniformityprotocol87.2.3 Aerosoluniformityresults87.2.4 Waterdropletsizedistributions97.2.5 Waterfogsedimentationcheck97.2.6 Scheduleofqualification.98 Testconditions98.1 Testair98.2 Testwater109 Testmethod109.1 Stopcriteria109.2 Adjustmentofthetestairflowrate109.3 Preparatorychecks109.3.1 Opera
15、tionalreadinessofthemeasuringinstruments109.3.2 Zerolevelcheckmeasurementofthesodiumflamephotometer(SFP)109.3.3 Absolutepressure,temperatureandrelativehumidityofthetestair109.3.4 Startingupthesaltgenerator119.3.5 Installationofthetestfilter119.3.6 Flushingthetestfilter119.4 Measurements119.4.1 Measurementofpressuredrop119.4.2 Measurementofthesaltremovalefficiency119.4.3 Measurementofthewaterremovalefficiency129.4.4 Cumulativesaltloading129.4.5 Cumulativesaltpenetration1310 Testprocedure1310.1 Pre
