1、BSI Standards PublicationBS EN ISO 17225-5:2014Solid biofuels Fuelspecifications and classesPart 5: Graded firewoodBS EN ISO 17225-5:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO17225-5:2014. It supersedes BS EN 14961-5:2011 which is withdrawn.The UK
2、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. Users are responsible f
3、or its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 78143 8ICS 27.190; 75.160.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards
4、Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17225-5 May 2014 ICS 27.190; 75.160.10 Supersedes EN 14961-5:2011English Version Solid biofuels - Fuel specifications and classes - Part 5: Grad
5、ed firewood (ISO 17225-5:2014) Biocombustibles solides - Classes et spcifications des combustibles - Partie 5: Classes de bois de chauffage (ISO 17225-5:2014) Feste Biobrennstoffe - Brennstoffspezifikationen und -klassen - Teil 5: Einteilung von Stckholz (ISO 17225-5:2014) This European Standard was
6、 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 references concerning such nati
7、onal 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 a CEN member into its own langu
8、age 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 Macedonia, France, Germany, Greece,
9、 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 EUROPISCHES KOMITEE FR NORMUNG CEN
10、-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 17225-5:2014 EBS EN ISO 17225-5:2014EN ISO 17225-5:2014 (E) 3 Foreword This document (EN ISO 17225-5:2014) has b
11、een 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 publication of an identical text or by end
12、orsement, 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 shall not be held responsible for i
13、dentifying any or all such patent rights. This document supersedes EN 14961-5:2011. 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). According to the CEN-CENELEC In
14、ternal 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, Germany, Greece, Hungary, Iceland,
15、 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 17225-5:2014 has been approved by CEN as EN ISO 17225-5:2014 without any modificati
16、on. BS EN ISO 17225-5:2014ISO 17225-5:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols and abbreviated terms . 25 Specification of graded firewood . 2Annex A (informative) Comparison of moisture cont
17、ent as received and dry basis . 5Annex B (informative) Measurement of firewood 7Annex C (informative) Calculation of energy density 8Bibliography .10BS EN ISO 17225-5:2014ISO 17225-5:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standar
18、ds bodies (ISO member bodies). The work of preparing International Standards 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 organi
19、zations, governmental and non-governmental, in liaison with ISO, also 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 fu
20、rther maintenance are described in the ISO/IEC Directives, Part 1. In 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/direct
21、ives).Attention is drawn to the possibility that some of the elements 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 I
22、ntroduction and/or on the ISO list of patent declarations received (see 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 t
23、o conformity assessment, as well as information about ISOs adherence 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
24、 parts, under the general title Solid biofuels Fuel specifications and 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 Al
25、l rights reservedBS EN ISO 17225-5:2014ISO 17225-5:2014(E)IntroductionThe 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 bu
26、yer as well as a tool for communication with equipment manufacturers. It will also facilitate authority permission procedures and reporting.This part of ISO 17225 supports the use of graded firewood for residential, small commercial and public building applications.The residential, small commercial
27、and public building applications require higher quality fuel for the following reasons: Small-scale equipment does not usually have advanced controls and flue gas cleaning Appliances are not generally managed by professional heating engineers Appliances are often located in residential and populated
28、 districtsNOTE 1 Firewood produced according to this part of ISO 17225 may be used in stoves, fireplaces, cookers, roomheaters and multifired sauna stoves, which are tested according to European standards EN 132291, EN 128152, EN 128093, EN 132404, EN 152505and EN 158216, and boilers systems tested
29、according to EN 30357.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 use ISO 17225-1 in conjunction with th
30、ese standards. ISO 2014 All rights reserved vBS EN ISO 17225-5:2014BS EN ISO 17225-5:2014Solid biofuels Fuel specifications and classes Part 5: Graded firewood1 ScopeThis part of ISO 17225 determines the fuel quality classes and specifications of graded firewood. This part of ISO 17225 covers only f
31、irewood produced from the following raw materials (see ISO 17225-1, Table 1): 1.1.1 Whole trees without roots 1.1.3 Stem wood 1.1.4 Logging residues (thick branches, tops etc.) 1.2.1 Chemically untreated wood residues2 Normative referencesThe following documents, in whole or in part, are normatively
32、 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.ISO 16559, Solid biofuels Terminology, definitions and descriptions1)
33、ISO 17225-1, Solid biofuels Fuel specifications and classes Part 1: General requirementsISO 18134-1, Solid biofuels Determination of moisture content Oven dry method Part 1: Total moisture Reference method2)ISO 18134-2, Solid biofuels Determination of moisture content Oven dry method Part 2: Total m
34、oisture - Simplified method3)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 16559 and the following apply.3.1firewoodcut and split oven-ready fuelwood used in household wood burning appliances like stoves, fireplaces and central heating systemsNote 1
35、 to entry: Firewood usually has a uniform length, typically in the range of 15 cm to 100 cm.1) To be published.2) To be published.3) To be published.INTERNATIONAL STANDARD ISO 17225-5:2014(E) ISO 2014 All rights reserved 1BS EN ISO 17225-5:2014ISO 17225-5:2014(E)3.2commercial applicationfacility tha
36、t utilize 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 and have vastly different fuel requirem
37、ents.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-percentageD Designation for diameter (D) as received mmE Designation for energy density as received, Ea
38、rMJ/m3or kWh/m3loose or stacked volume or MJ/kg, kWh/kgL Designation for length (L) as received cmM Designation for moisture content as received on wet basis, Marw-%U Designation for moisture content on dry basis, Ud,w-%Q Designation for net calorific value as received, qp,net,arMJ/kg or kWh/kg or M
39、Wh/t at constant pres-sureNOTE 1 1 MJ/kg equals 0,2778 kWh/kg (1 kWh/kg equals 1 MWh/t and 1 MWh/t is 3,6 MJ/kg). 1 g/cm3equals 1 kg/dm3.NOTE 2 Designation symbols are used in combination with a number to specify property levels in Table 1. 5 Specification of graded firewoodSpecification of the fire
40、wood is stated in accordance with Table 1 and Figure 1. The determination of the properties shall be carried out in accordance with the methods mentioned in the normative references.Ash, N, S, Cl and minor elements are not required as firewood is produced from virgin material which has been grown in
41、 uncontaminated soil and therefore the likelihood of contamination is very low.Firewood specified according to classes A1 and A2 are suitable to be used in stoves and fireplaces and class B in log wood boilers.How to state the dimensions of firewood is expressed in Figure 1.2 ISO 2014 All rights res
42、ervedBS EN ISO 17225-5:2014ISO 17225-5:2014(E)KeyD maximum diameterL maximum lengthFigure 1 Dimensions of firewoodNOTE Firewood amounts are given in cubic metres or in kilograms. A cubic metre of stacked wood means a stack of wood that occupies a space of one cubic metre. A cubic metre of loose wood
43、 is equal to a box one cubic metre in size into which the split logs are “thrown”. This is also referred to as an “unstacked cubic metre”. Naturally, the conversion rates between the volumes will be affected by the size of the logs and how they are arranged. Comparison of different cubic meters is s
44、hown in informative Annex B.If the properties being specified are sufficiently known through information about the origin and handling (or preparation method combined with experience) then analysis may not be needed.To ensure resources are used appropriately and the declaration is accurate, use the
45、most appropriate measure below:1) using previous measured values or obtained by experience of same raw material;2) calculation of properties, e.g. by using typical values and considering generally accepted and documented specific values;3) carrying out of analysis:a) with simplified methods if avail
46、able;b) with reference methods.The responsibility of the producer or supplier to provide correct and accurate information is exactly the same whether laboratory analysis is performed or not. Typical values do not release the producer or supplier from providing accurate and reliable information.Chemi
47、cal treatment before harvesting of biomass does not need to be stated. Where any operator in the fuel supply chain has reason to suspects serious contamination of soil (e.g. coal slag heaps) or if planting has been used specifically for the sequestration of chemicals or growing biomass is fertilized
48、 with sewage sludge (issued from waste water treatment or chemical process), fuel analysis should be carried out to identify chemical impurities such as halogenated organic compounds or heavy metals.Decay means a loss of mass and energy. Damage by insects, incipient rot and mould is not considered t
49、o be loss of mass and energy. Mould can appear on the surface of wood. The amount of mould generated depends on the drying and storage as well as the ambient conditions. Discolouration may appear as a result of chemical reactions between Fe ions and tannins (example is white oak) or by exposure to oxidation by air and kiln drying.The quality shall be given either in the product declaration or by a corresponding label in the package. ISO 2014 All rights reserved 3BS EN ISO 17225-5:2014ISO 172
