ISO／FDIS 17225-4：2020.docx

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1、FINA1DRAFTINTERNATIONA1ISO/FDISSTANDARD17225-4ISOTC238Secretariat:SISVotingbeginson:202310-12Votingterminateson:2023-12-07So1idbiofue1sFue1specificationsandc1asses一Part4:GradedwoodchipsBiocombiistib1esso1ides-C1assesetspecificationsdescombustib1es一Partie4:C1assesdep1aquettesdeboisISO/CENPARA11E1PROC

2、ESSINGReferencenumberISO/FDIS17225-4:2023(E)RECIPIENTSOFTHISDRAFTAREINVITEDTOSUBMIT.WITHTHEIRCOMMENTS.NOTIFICATIONOFANYRE1EVANTPATENTRIGHTSOFWHICHTHEYAREAWAREANDTOPROVIDESUPPORTINGDOCUMENTATIONINADDITIONTOTHEIREVA1UATIONASbeingAcceftab1eforindustria1techno1ogica1.COMMERCIA1ANDUSERPURPOSES.DRAFTINTER

3、NATIONA1STANDARDSMAYONOCCASIONHAVETOBECONSIDEREDINTHE1IGHTOFTHEIRPOTENTIA1TOBECOMESTAN.DARDSTOWHICHREFERENCEMAYBEMADEINNATIONA1REGU1ATIONSCOPYRIGHTPROTECTEDDOCUMENTISO2023A11rightsreserved.Un1essotherwisespecified,orrequiredinthecontextofitsimp1ementation,nopartofthispub1icationmaybereproducedoruti1

4、izedotherwiseinanyformorbyanymeans,e1ectronicormechanica1,inc1udingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1oworISOsmemberbodyinthecountryoftherequesterISOcopyrightofficeCP401Ch.deB1andonnet8CH1214Vernier;Geneva

5、Phone:*41227490111Emai1:copyrightiso.orgWebsite:www.iso.orgPub1ishedinSwitzer1andPageContentsForewordIntroduction2Nc)rmatvereferences14Symbo1sandabbreviatedterms2jfjCatjcfra1?1Wo)CIAnnexA(informative)Genera1guide1inesforbu1kdensityofgradedwoodchips7ForewordISO(theInternationa1OrganizationforStandard

6、ization)isawor1dwidefederationofnationa1standardsbodies(ISOmemberbodies).TheworkofpreparingInternationa1Standardsisnorma11ycarriedoutthroughISOtechnica1committees.Eachmemberbodyinterestedinasubjectforwhichatechnica1committeehasbeenestab1ishedhastherighttoberepresentedonthatcommittee,internationa1org

7、anizations,governmenta1andnon-governmenta1,in1iaisonwithISO,a1sotakepartinthework.ISOco11aboratesc1ose1ywiththeInternationa1E1ectrotechnica1Commission(IEC)ona11mattersofe1ectrotechnica1standardization.Theproceduresusedtodeve1opthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/

8、IECDirectives,Part1.Inparticu1ar,thedifferentapprova1criterianeededforthedifferenttypesofISOdocumentsshou1dbenoted.Thisdocumentwasdraftedinaccordancewiththeeditoria1ru1esoftheISO/IECDirectives,Part2(seeWWW,isoQigdiecUves).Attentionisdrawntothepossibi1itythatsomeofthee1ementsofthisdocumentmaybethesub

9、jectofpatentrights.ISOsha11notbehe1dresponsib1eforidentifyinganyora11suchpatentrights.Detai1sofanypatentrightsidentifiedduringthedeve1opmentofthedocumentwi11beintheIntroductionand/orontheISO1istofpatentdec1arationsreceived(seeWWW.iso.org/patents).Anytradenameusedinthisdocumentisinformationgivenforth

10、econvenienceofusersanddoesnotconstituteanendorsement.Foranexp1anationofthevo1untarynatureofstandards,themeaningofISOspecifictermsandexpressionsre1atedtoconformityassessment,aswe11asinformationaboutISOsadherencetotheWor1dTradeOrganization(WTO)princip1esintheTechnica1BarrierstoTrade(TBT),seewww.iso.or

11、g/iso/foreword.htm1.ThisdocumentwaspreparedbyTechnica1CommitteeTC238,So1idbiofue1s.Thissecondeditioncance1sandrep1acesthefirstedition(ISO17225-4:2014),whichhasbeentechnica11yrevised.Themainchangescomparedtothepreviouseditionareasfo11ows: partic1esizedistributionc1assificationupdated; moistureandashc

12、ontentc1assesupdated; ArmeXAupdated.A1istofa11partsintheISO17225seriescanbefoundontheISOwebsite.Anyfeedbackorquestionsonthisdocumentshou1dbedirectedtotheuser,snationa1standardsbody.Acomp1ete1istingofthesebodiescanbefoundatWWWjSOQrg/members.htm1.IntroductionTheobjectiveoftheISO17225seriesistoprovideu

13、nambiguousandc1earc1assificationprincip1esforso1idbiofue1s;toserveasatoo1toenab1eefficienttradingofso1idbiofue1s;toenab1egoodunderstandingbetweense11erandbuyeraswe11asatoo1forcommunicationwithequipmentmanufacturers.Ita1sofaci1itatesauthoritypermissionproceduresandreportingR.Thisdocumentsupportstheus

14、eofgradedwoodchipsforsma11andmediumresidentia1,commercia1andpub1icbui1dingapp1ications.Dependingonthetypeofenergyconversiontechno1ogyused(boi1ers,heaters,gasifiers,etc.,theto1erancesforaparticu1arqua1ityofwoodchipswi11bedifferent.Sca1esofapp1icationsandtheirtypica1operationrange: be1ow100kW(Resident

15、ia1); from75to500kW(Sma11;e.g.residentia1,pub1icandcommercia1bui1dings); from500kWto1,5MW(Medium;pub1icandcommercia1bui1dings); 1,5MWto5MW(1arge;sma11industria1faci1itiesanddistrictheating); over5MW(Industria1;recommendedtouseISO17225-1or1SOTS17225-9)Thesca1eusedforgroupingtheapp1icationsuti1izingwo

16、odchipsisfori11ustrationon1yandinpractice,someover1apsbetweentheapp1icationsandthesca1esareexpected.Theresidentia1,sma11andmediumcommercia1andpub1icbui1dingapp1icationsrequirehighqua1ityfue1forthefo11owingreasons: Sma11-sca1eequipmentusua11ydoesnothaveadvancedcontro1sandf1uegasc1eaning. App1iancesarenotgenera11ymanagedbyprofess