ISO 04678-2024.docx

5>×SOInternationa1.StandardISO4678Firstedition2024-01Shipsandmarinetechno1.ogy一NoisemeasurementmethodforHVACsysteminaccommodationspacesNaviresettechno1.ogicmaritimeMe1.hodepourIemesuragedubruitdusystmeCVCAdansIesIocauxReferencenumberISO46782024(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2024WintG<hcdBdHUWwdotherwiseianSit111.CrW4wErtiwnbxtt11mi<k)hrtRd11kHimhwfrpn911tnmcnpyip<?IHdiCntienma)>theinternetoranintranet,withoutpriorwrittenpermission.PermissiononberequestedfromeitherISOatthebe1.oworISOsmemberbodyinthecountryoftherequester.b,Vyfrfiandonnet8CH-1214VcmicrrGcncvaPhoae:*41227490111聊独te:薪括嬴OQrgPub1.ishedinSwitzer1.andContentsPageForewordivitroductionv2 Scope13 Normativereferences14 Termsanddefinitions1Instrumentation24.4.4.123Microphonewithsound1.eve1.meterorothermicrophoneamp1.ifier2Microphonecab1.e2FreqUeney一.一.一.一.2Noseconeandana1.yser¼indshie1.dSound1.eve1.recorderorotherdatasamp1.ingdevices-3Ihb1.ationof.*1.11.1>.1.>.*>a.1.>*.>.>.a.1->>.1.>.>><<.>>«.>>««.>1.>3Genera1.requirements3Measurementprocedure34.1 Out1.etnoisemeasurement34.2 Backgroundnoisemeasurementandout1.etnoisecorrection.4g.y,tm¾ct.S6.4.1 Exhaustout1.etnoise1.eve1.56.4.2 Ca1.cu1.ationofthecabinsoundabsorption67Measurementreport77.1 Measurementcompanyandpersonne1.77.2 Shipparticu1.ars77.3 .<.a>.>>.*>_.77.5 MeasuringconditionsB7.6 NfeasurementC1.ata.8Bib1.iography.9HiForewordISO(theInternationa1.OrganizationforStandardization)isaWOHdwidefederationofnationa1.standardsIMdIiest触UimatbnnbtidM明岷IWnribefPrbPdNMEtetfndtiOna1.Staudd<B-Mhtob1.1.ytecbarrfticienntHXoaghhasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththeInternationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersOfe1.ectrotechnica1.standardization.Theproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticu1.ar,thedifferentapprova1.criterianeededforthedifferenttypesISOdrawsattentiontothepossibi1.itythattheimp1.ementationofthisdocumentmayinvo1.vetheuseof（八）陶源榭泡PeCttakes"er斑淑ition由龈优erA嗨脚硒用M能%CU檎帆格bi哪而脚龈似楸dpatentpatents)whichmayberequiredtoimp1.ementthisdocument.However,imp1.ementersarecautionedthatthismaynotrepresentthe1.atestinformation,whichmaybeobtainedfromthepatentdatabaseavai1.ab1.eatWWWmeMirgpm1.3NsISOsha1.1.notbehe1.dresponsib1.eforidentifyinganyora1.1.suchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Organization(VVrTO)princip1.esintheTechnica1.BarrierstoTrade(TBT),seewww.iso.org/iso/forcword.htm1.杷肾眼吊preparedbyTechnica1.Committee1SOTC8,Shipsandmarinetechno1.ogy,SubcommitteeAnyfeedbackorquestionsonthisdocumentshou1.dbedirectedtotheuser'snationa1.standardsbody.Acomp1.ete1.istingofthesebodiescanbefoundarwww0GFgmemba¾4Nm1.IntroductionaccommodationSPaCeSPaSSengerSfarfromship.machinerysomeStandardsnoisesourcemeasuringnoisehabitabi1.ityConsumingthemethodsSpecifiedpresentedinstandardsdocumentandmoremeasurementinstruments,measurementP1.acingdocumentmicrophonesmethodthenoisemeasurementreduceairf1.owinterferenceaccommodationinhomogeneity,previousmethods.mitigateofthesecauses.noise1.eve1.oftheHVCsystem,furtherenab1.ingobjectivemeasurestobetakento¢)ISO2024-A1.1.rightsreservedHeating,venti1.ationandairconditioning(HVAC)isoneofthemostseriousnoisesources,especia1.1.yforshipcomfortofcrewsandthatonatheA1.thoughspaces.Thisexistforaffectstheonboardvesse1.s,forexamp1.eISO2923,nospecia1.attentionhasbeenpaidtomeasurenoisearisingfromtheHVAC.OtherstandardssuchasISO3740aremoreaccurateforquantifyingmeasurementofanoisesource.Howeverrthanmethodinotherthisrequirearedifficu1.ttothenoisemoretime-HVACsystemonboardships,whichhasmanyout1.etsdistributedinhundredsofcabins.Thisthreespecifiesaaroundofventout1.etstoofHVACsystemsshipspacespacesbyandbycorrectingthenoiseresu1.tbymeasuringthereverberationtimeofthecabin.ThenoisemeasurementmethodfortheHVCsystemisacompromise,whichismoreprecise,but1.ess1.aborious,comparedtotheThemeasurementshou1.dbeperformedforshipaccommodationspaces,wherenoiseexceedstherequired1.imitsaccordingtoexistingregu1.ations.Themeasurementandana1.ysisresu1.tscou1.dbeusedtodetectthecauseshigherShipsandmarinetechno1.ogyNoisemeasurementmethodforHVACsysteminaccommodationspaces1 ScopeThisdocumentprovidestheinstrumentationrequirementsandmeasurementproceduresformeasuringnoisefromHVACsystemsinshipaccommodationspaces.AccommodationspacesaredefinedaccordingtoISO2923,andinc1.udecabins,offices(forcarryingoutshipisbusiness),hospita1.s,mes