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1、BS EN ISO 15403-1:2008 ICS 75.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality (ISO 15403-1:2006) Licensed Copy: London South Bank University, South Bank Un
2、iversity, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2008 BSI 2008 ISBN 978 0 580 65714 6 Amendments/corrigenda issued since publication DateComments BS EN ISO 15403-1:2008 Nationa
3、l foreword This British Standard is the UK implementation of EN ISO 15403-1:2008. It is identical to ISO 15403-1:2006. It supersedes BS ISO 15403:2000 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PTI/15, Natural gas and gas analysis. A list of orga
4、nizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obliga
5、tions. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15403-1 January 2008 ICS 75.060 English Version Natural gas - Natural gas for use as a compressed fuel for vehicles - Part
6、1: Designation of the quality (ISO 15403-1:2006) Gaz naturel - Gaz naturel pour usage comme carburant comprim pour vhicules - Partie 1: Dsignation de la qualit (ISO 15403-1:2006) This European Standard was approved by CEN on 15 December 2007. CEN members are bound to comply with the CEN/CENELEC Inte
7、rnal 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 national standards may be obtained on application to the CEN Management Centre or to any CEN mem
8、ber. 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 language and notified to the CEN Management Centre has the same status as the official versions. CEN memb
9、ers are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
10、Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref
11、. No. EN ISO 15403-1:2008: E Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 ISO 15403-1:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope 1 2 Normative references1 3 Terms
12、 and definitions .1 4 Symbols and abbreviations9 5 Gas composition requirements10 6 Gas properties11 7 Driveability12 8 Test methods12 9 Sampling.13 Annex A (informative) Propane and butane content .14 Annex B (informative) Wobbe index range.16 Annex C (informative) Engine knock.18 Annex D (informat
13、ive) Methane number and octane number.19 Annex E (informative) Water content of natural gas22 Bibliography23 Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 ISO 15403-1:2006(E) iv ISO 2006 All rights reserved For
14、eword ISO (the International Organization for Standardization) is a worldwide federation of national standards 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 tech
15、nical committee has been established has the right to be represented on that committee. International organizations, 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
16、 electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated t
17、o the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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
18、 identifying any or all such patent rights. ISO 15403-1 was prepared by Technical Committee ISO/TC 193, Natural gas. This first edition of ISO 15403-1 cancels and replaces ISO 15403:2000, of which it constitutes a minor revision including the following changes: correction of the title to reflect tha
19、t ISO 15403 is now formed of two parts; reformat the document in accordance with the ISO/IEC Directives, Part 2, Fifth edition, 2004; reformat the references cited in Clause 2 and in the Bibliography, in accordance with the ISO/IEC Directives, Part 2, Fifth edition, 2004. ISO 15403 consists of the f
20、ollowing parts, under the general title Natural gas Natural gas for use as a compressed fuel for vehicles: Part 1: Designation of the quality Part 2: Specification of the quality (Technical Report) Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Cop
21、y, (c) BSI BS EN ISO 15403-1:2008 ISO 15403-1:2006(E) ISO 2006 All rights reserved v Introduction Natural gas has been used to some extent as a fuel for internal combustion engines in compressor stations, co-generation systems, and vehicles of various types for many years now. However, the prerequis
22、ites for growth, i.e. economic viability and fuel availability, were generally not satisfied. Now, with the natural gas industry well established, supplying 20 % of the worlds primary energy, and the need for alternative, low- emission fuels, the situation has improved considerably. During the past
23、decade, natural gas vehicles have become a viable option with some five millions units now in use around the world. Growth is continuing as many governments actively promote this clean-burning fuel with its environmental benefits. Many fleet operators are converting their vehicles, and vehicle manuf
24、acturers are developing and marketing dedicated natural gas equipment. In the context of this International Standard, natural gas vehicles (NGVs) utilize compressed natural gas stored “on-board”. The pressure of the gas stored in multiple containers is up to a maximum 25 000 kPa. Although the pressu
25、re has to be reduced before combustion, compression and storage gives NGVs an adequate range. While NGVs were initially equipped with converted gasoline or diesel engines, high- performance, dedicated natural gas engines are now being extensively developed and produced. Liquefied natural gas (LNG) m
26、ay also be stored in the fuel tanks of natural gas vehicles. This, however, will be the subject of a separate International Standard. This part of ISO 15403 for the quality designation of compressed natural gas is designed to stipulate the international requirements placed on the natural gas used as
27、 a motor fuel. Engine and vehicle manufacturers must know these requirements so they can develop high-performance equipment which runs on compressed natural gas. A technical report giving detailed data on the gas compositions used in this part of ISO 15403 is being published as ISO/TR 15403-2. Licen
28、sed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 INTERNATIONAL STANDARD ISO 15403-
29、1:2006(E) ISO 2006 All rights reserved 1 Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality 1 Scope The aim of this part of ISO 15403 is to provide manufacturers, vehicle operators, fuelling station operators and others involved in the compressed-nat
30、ural-gas vehicle industry with information on the fuel quality for natural gas vehicles (NGVs) required to develop and operate compressed-natural-gas vehicle equipment successfully. Fuel meeting the requirements of this part of ISO 15403 should a) provide for the safe operation of the vehicle and as
31、sociated equipment needed for its fuelling and maintenance; b) protect the fuel system from the detrimental effects of corrosion, poisoning, and liquid or solid deposition; c) provide satisfactory vehicle performance under any and all conditions of climate and driving demands. Some aspects of this p
32、art of ISO 15403 may also be applicable for the use of natural gas in stationary combustion engines. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the lat
33、est edition of the referenced document (including any amendments) applies. ISO 6976:1995, Natural gas Calculation of calorific values, density, relative density and Wobbe index from composition 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. Defi
34、nitions were taken from ISO 14532 whenever possible. 3.1 natural gas complex mixture of hydrocarbons, primarily methane, but generally also including ethane, propane and higher hydrocarbons in much smaller amounts and some non-combustible gases, such as nitrogen and carbon dioxide NOTE 1 Natural gas
35、 generally also includes minor amounts of trace constituents. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 ISO 15403-1:2006(E) 2 ISO 2006 All rights reserved NOTE 2 Natural gas is produced and processed from t
36、he raw gas or liquefied natural gas and, if required, blended to the extent suitable for direct use (for example as gaseous fuel). NOTE 3 Natural gas remains in the gaseous state under the temperature and pressure conditions normally found in service. NOTE 4 Natural gas consists predominantly of met
37、hane (mole fraction greater than 0,70), and has a superior calorific value normally within the range 30 MJ/m3 to 45 MJ/m3. It contains also ethane (typically up to 0,10 mole fraction), propane, butanes and higher alkanes in steadily decreasing amounts. Nitrogen and carbon dioxide are the principal n
38、on- combustible components, each present at levels which typically vary from less than 0,01 mole fraction to 0,20 mole fraction. Natural gas is processed from the raw gas so as to be suitable for use as industrial, commercial, residential fuel or as a chemical feedstock. The processing is intended t
39、o reduce the contents of potentially corrosive components, such as hydrogen sulfide and carbon dioxide, and of other components, such as water and higher hydrocarbons, potentially condensable in the transmission and distribution of the gas. Hydrogen sulfide, organic sulfur compounds and water are th
40、en reduced to trace amounts, and high carbon dioxide contents are likely to be reduced to below 0,05 mole fraction. Natural gas is normally technically free from aerosol, liquid and particulate matter. In some circumstances natural gas may be blended with town gas or coke oven gas, in which case hyd
41、rogen and carbon monoxide will be present in amounts up to 0,10 mole fraction and 0,03 mole fraction respectively. In this case, small amounts of ethylene may also be present. Natural gas may also be blended with LPG1)/air mixtures, in which case oxygen will be present, and the levels of propane and
42、 butanes will be considerably enhanced. NOTE 5 Pipeline quality natural gas is one which has been processed so as to be suitable for direct use as industrial, commercial, residential fuel or as a chemical feed stock. The processing is intended to reduce the corrosive and toxicity effects of certain
43、components, and to avoid condensation of water or hydrocarbons in the transmission and distribution of the gas. Hydrogen sulfide and water should only be present in trace amounts, and high carbon dioxide content is likely to be reduced. ISO 14532:2001, 2.1.1.1 3.2 substitute natural gas manufactured
44、 or blended gas which is interchangeable in its properties with natural gas ISO 14532:2001, 2.1.1.3 NOTE Manufactured gas is sometimes called synthetic natural gas. 3.3 compressed natural gas natural gas used as a fuel for vehicles, typically compressed up to 20 000 kPa in the gaseous state ISO 1453
45、2:2001, 2.1.1.12 NOTE The maximum pressure for natural gas stored in a container is 25 000 kPa. 3.4 gas quality attribute of natural gas dependent on its composition and its physical properties ISO 14532:2001, 2.1.1.14 1) LPG = liquefied petroleum gas. Licensed Copy: London South Bank University, So
46、uth Bank University, 31/01/2009 02:21, Uncontrolled Copy, (c) BSI BS EN ISO 15403-1:2008 ISO 15403-1:2006(E) ISO 2006 All rights reserved 3 3.5 normal reference conditions reference conditions of pressure, temperature and humidity (state of saturation) equal to: 101,325 kPa and 273,15 K for a real,
47、dry gas 3.6 standard reference conditions reference conditions of pressure, temperature and humidity (state of saturation) equal to: 101,325 kPa and 288,15 K for a real, dry gas NOTE 1 Good practice requires that the reference conditions are incorporated as part of the symbol, and not of the unit, f
48、or the physical quantity represented. EXAMPLE () Scrccrcmrcmrc ,HpTV pT ? where S H ? superior calorific value on volumetric basis; Tcrc temperature of the combustion reference conditions; pcrc pressure of the combustion reference conditions; V(pmrc, Tmrc) volume at temperature and pressure of the m
49、etering reference conditions. NOTE 2 Standard reference conditions are also referred to as metric standard conditions. NOTE 3 The abbreviation s.t.p. (standard temperature and pressure) replaces the abbreviation N.T.P. (Normal Temperature and Pressure), as formerly used, and is defined as the condition of pressure and temperature equal to: 101,325 kPa and 288,15 K. No restriction is given on the state of saturation. ISO 14532:2001, 2.6.1.4 3.7 superior calorific value energy released as heat by the complete combustio
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