AHRI575-2008MethodofMeasuringMachinerySoundWithinanEquipmentSpace.pdf

AHRI575-2008MethodofMeasuringMachinerySoundWithinanEquipmentSpace.pdf

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时间:2019-10-17

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1、AHRIStandard575(formerlyARIStandard575)2008StandardforMethodofMeasuringMachinerySoundWithinanEquipmentSpacePrice$15.00(M)$30.00(NM)8Copyright1994,byAir-ConditioningandRefrigerationInstitutePrintedinU.S.A.RegisteredUnitedStatesPatentandTrademarkOfficeIMPORTANTSAFETYDISCLAIMERAHRIdoesnotsetsa

2、fetystandardsanddoesnotcertifyorguaranteethesafetyofanyproducts,componentsorsystemsdesigned,tested,rated,installedoroperatedinaccordancewiththisstandard/guideline.Itisstronglyrecommendedthatproductsbedesigned,constructed,assembled,installedandoperatedinaccordancewithnationallyrecognizedsafe

3、tystandardsandcoderequirementsappropriateforproductscoveredbythisstandard/guideline.AHRIusesitsbesteffortstodevelopstandards/guidelinesemployingstate-of-the-artandacceptedindustrypractices.AHRIdoesnotcertifyorguaranteethatanytestsconductedunderitsstandards/guidelineswillbenon-hazardousorfre

4、efromrisk.FOREWORDThisdocumentestablishesauniformmethodofmeasuringthesoundlevelsproducedbyair-conditioningandrefrigeratingmachineryinstalledinmechanicalequipmentspaces.However,itshouldbeemphasizedthatthisstandardwasdevelopedforusewherethetestconditionsusuallycannotbecontrolled,e.g.,ambientt

5、emperature;equipmentloading;physicalattributesofthespace;backgroundsoundsources,etc.Sincetheresultsobtainedmayvarysubstantially,atoleranceontheseresultscannotbespecified.Uniformpracticesinmakingsoundlevelmeasurementsarenecessaryforeffectivecommunicationbetweentheowner,thearchitect,theacoust

6、ician,theconsultingengineer,thecontractorandtheequipmentmanufacturer.Specificationsforsoundlevelsproducedbymachinerymaybewritten,bothforthepurposeofsupplyinginformationinordertoevaluatecompliancewithnoiseexposurelimitsandforthepurposeofprovidinginformationforadequatebuildingdesigntomeetthea

7、cousticaldesigngoalsofadjacentoccupiedspaces.Inviewofthegeometricalandacousticalpropertiesoflargeequipment,bothpurposescanbestbeservedbysounddataexpressedintermsofSoundPressureLevelmeasuredclosetotheequipment.Soundpressuremeasurementsclosetotheequipmenta

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