1、BSI Standards PublicationBS EN ISO 17225-4:2014Solid biofuels Fuelspecifications and classesPart 4: Graded wood chips (ISO17225-4:2014)BS EN ISO 17225-4:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO17225-4:2014. It supersedes BS EN 14961-4:2011 which
2、is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PTI/17, Solid biofuels.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Use
3、rs are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 78142 1ICS 27.190; 75.160.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the author
4、ity of theStandards Policy and Strategy Committee on 31 May 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17225-4 May 2014 ICS 27.190; 75.160.10 Supersedes EN 14961-4:2011English Version Solid biofuels - Fuel specifications and cla
5、sses - Part 4: Graded wood chips (ISO 17225-4:2014) Biocombustibles solides - Classes et spcifications des combustibles - Partie 4: Classes de plaquettes de bois (ISO 17225-4:2014) Feste Biobrennstoffe - Brennstoffspezifikationen und -klassen - Teil 4: Einteilung von Holzhackschnitzeln (ISO 17225-4:
6、2013) This European Standard was approved by CEN on 29 March 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
7、 references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of
8、 a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Mac
9、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EU
10、ROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17225-4:2014 EBS EN ISO 17225-4:2014EN ISO 17225-4:2014 (E) 3 Foreword This docu
11、ment (EN ISO 17225-4:2014) has been prepared by Technical Committee ISO/TC 238 “Solid biofuels” in collaboration with Technical Committee CEN/TC 335 “Solid biofuels” the secretariat of which is held by SIS. This European Standard shall be given the status of a national standard, either by publicatio
12、n of an identical text or by endorsement, at the latest by November 2014, and conflicting national standards shall be withdrawn at the latest by November 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC sha
13、ll not be held responsible for identifying any or all such patent rights. This document supersedes EN 14961-4:2011. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).
14、 According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Ge
15、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17225-4:2014 has been approved by CEN as EN ISO 172
16、25-4:2014 without any modification. BS EN ISO 17225-4:2014ISO 17225-4:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and abbreviated terms . 25 Specification of graded wood chips. 3Annex A (informa
17、tive) General guidelines for bulk density of graded wood chips . 7Bibliography 8BS EN ISO 17225-4:2014ISO 17225-4:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St
18、andards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also
19、 take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In
20、 particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements
21、 of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (s
22、ee www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence
23、to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 238, Solid biofuels.ISO 17225 consists of the following parts, under the general title Solid biofuels Fuel specifications an
24、d classes: Part 1: General requirements Part 2: Graded wood pellets Part 3: Graded wood briquettes Part 4: Graded wood chips Part 5: Graded firewood Part 6: Graded non-woody pellets Part 7: Graded non-woody briquettesiv ISO 2014 All rights reservedBS EN ISO 17225-4:2014ISO 17225-4:2014(E)Introductio
25、nThe objective of the ISO 17225 series is to provide unambiguous and clear classification principles for solid biofuels; to serve as a tool to enable efficient trading of biofuels; to enable good understanding between seller and buyer as well as a tool for communication with equipment manufacturers.
26、 It also facilitates authority permission procedures and reporting.This part of ISO 17225 supports the use of graded wood chips for residential, small commercial and public building applications.The residential, small commercial and public building applications require higher quality fuel for the fo
27、llowing reasons: Small-scale equipment usually does not have advanced controls and flue gas cleaning. Appliances are not generally managed by professional heating engineers. Appliances are often located in residential and populated districts.NOTE 1 Wood chips produced according to this part of ISO 1
28、7225 may be used in boilers tested according to EN 30351.NOTE 2 For individual contracts, ISO 17225-1 can be used.Although these product standards may be obtained separately, they require a general understanding of the standards based on and supporting ISO 17225-1. It is recommended to obtain and us
29、e ISO 17225-1 in conjunction with these standards. ISO 2014 All rights reserved vBS EN ISO 17225-4:2014BS EN ISO 17225-4:2014Solid biofuels Fuel specifications and classes Part 4: Graded wood chips1 ScopeThis part of ISO 17225 determines the fuel quality classes and specifications of graded wood chi
30、ps. This part of ISO 17225 covers only wood chips produced from the following raw materials (see ISO 17225-1, Table 1): 1.1 Forest, plantation and other virgin wood 1.2 By-products and residues from wood processing industry 1.3.1 Chemically untreated used wood2 Normative referencesThe following docu
31、ments, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.NOTE ISO standards describ
32、ing methods for analysis of fuel properties listed in the Bibliography, will become normative references when they are published.ISO 16559, Solid biofuels Terminology, definitions and descriptions1)ISO 16948, Solid biofuels Determination of total content of carbon, hydrogen and nitrogen2)ISO 16968,
33、Solid biofuels Determination of minor elements3)ISO 16994, Solid biofuels Determination of total content of sulfur and chlorine4)ISO 17225-1, Solid biofuels Fuel specifications and classes Part 1: General requirementsISO 17828, Solid biofuels Determination of bulk density5)ISO 18122, Solid biofuels
34、Determination of ash content6)ISO 18134-1, Solid biofuels Determination of moisture content Oven dry method Part 1: Total moisture Reference method7)1) To be published.2) To be published.3) To be published.4) To be published.5) To be published.6) To be published.7) To be published.INTERNATIONAL STAN
35、DARD ISO 17225-4:2014(E) ISO 2014 All rights reserved 1BS EN ISO 17225-4:2014ISO 17225-4:2014(E)ISO 18134-2, Solid biofuels Determination of moisture content Oven dry method Part 2: Total moisture - Simplified method8)3 Terms and definitionsFor the purposes of this document, the terms and definition
36、s given in ISO 16559 and the following apply.3.1wood chipschipped woody biomass in the form of pieces with a defined particle size produced by mechanical treatment with sharp tools such as knivesNote 1 to entry: Wood chips have a subrectangular shape with a typical length of 5 mm to 50 mm and a low
37、thickness compared to other dimensions.3.2chemical treatmentany treatment with chemicals other than air, water or heatEXAMPLE Glue and paint.Note 1 to entry: Examples of chemical treatment are listed in ISO 17225-1.3.3contaminationexposure to impurity such as poisonous or polluting substance to a fu
38、el3.4commercial applicationfacility that utilises solid biofuel burning appliances or equipment that have similar fuel requirements as residential appliancesNote 1 to entry: Commercial applications should not be confused with industrial applications, which can utilize a much wider array of materials
39、 and have vastly different fuel requirements.4 Symbols and abbreviated termsThe symbols and abbreviated terms used in this part of ISO 17225 comply with the SI system of units as far as possible.d dry (dry basis)ar as receivedw-% weight-percentageA Designation for ash content on dry basis, Adw-% BD
40、Designation for bulk density as received kg/m3 P Designation for particle size distribution M Designation for moisture content as received on wet basis, Marw-%Q Designation for net calorific value as received, qp,net,arMJ/kg or kWh/kg or MWh/t at constant pressureNOTE 1 1 MJ/kg equals 1 GJ/t or 0,27
41、78 kWh/kg (1 kWh/kg equals 1 MWh/t and 1 MWh/t is 3,6 MJ/kg). 1 g/cm3equals 1 kg/dm3. 1 mg/kg equals 0,000 1 % or 1 ppm.8) To be published.2 ISO 2014 All rights reservedBS EN ISO 17225-4:2014ISO 17225-4:2014(E)NOTE 2 Designation symbols are used in combination with a number to specify property level
42、s in Table 1. For designation of chemical properties, chemical symbols like S (sulfur), Cl (chlorine), N (nitrogen) are used and the property class is added at the end of the symbol.5 Specification of graded wood chipsSpecification of the graded wood chips is stated in accordance with Table 1 and 2.
43、 The sampling and analysis of the properties shall be carried out in accordance with the methods mentioned in the normative references.Property classes A1 and A2 represent virgin woods and chemically untreated wood residues. A1 represents fuels with lower ash content indicating no or little bark, an
44、d lower moisture content, while class A2 has slightly higher ash content and/or moisture content. B1 extends the origin and source of class A to include other material, such as, short rotation coppice, wood from gardens and plantation etc., and chemically untreated industrial by-products and residue
45、s. Property class B2 also includes chemically treated industrial by-products and residues and chemically untreated used wood.Chemically treated wood by-products and residues from wood processing industry (1.2.2) and chemically untreated used wood (1.3.1) are included in property class B2 as long as
46、they do not contain heavy metals or halogenated organic compounds as a result of treatment with wood preservatives or coating. In case of raw materials belonging to 1.2.2 (chemically treated wood) the actual origin of the raw material shall be clearly described, e.g. 1.2.2, Residues from laminated w
47、ood production.EXAMPLE Chips of class B2 produced from 99 w-% stemwood from spruce 1.1.3, 1 w-% may contained glued wood from wood beam production (amount of glue 31,5 mm) 45 mm 2 cm2P31S 3,15 mm 45 mm) 150 mm 4 cm2P45S 3,15 mm 63 mm) 200 mm 6 cm2aThe numerical values (P-class) for dimension refer t
48、o the particle sizes passing through the mentioned round hole sieve size (ISO 17827-1). The lowest possible class should be stated. Only one class shall be specified for wood chips.bLength and cross sectional area only have to be determined for those particles, which are to be found in the coarse fr
49、action. Maximum 2 pieces of about 10 l sample may exceed the maximum length, if the cross sectional area is 0,5 cm2.cFor measuring the cross sectional area it is recommended to use a transparent set square, place the particle orthogonally behind the set square and estimate the maximum cross sectional area of this particle with the help of the cm2-pattern.4 ISO 2014 All rights reservedBS EN ISO 17225-4:2014ISO 17225-4:2014(E)Table 2 Specification of graded wood chipsProperty class, Analy
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