DD-CEN-TS-14774-3-2004.pdf
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1、DRAFT FOR DEVELOPMENT DD CEN/TS 14774-3:2004 Solid biofuels Methods for the determination of moisture content Oven dry method Part 3: Moisture in general analysis sample ICS 75.160.10 ? Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:00 2006, Unc
2、ontrolled Copy, (c) BSI DD CEN/TS 14774-3:2004 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 16 December 2004 BSI 16 December 2004 ISBN 0 580 45019 8 National foreword This Draft for Development is the official English language version
3、 of CEN/TS 14774-3:2004. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because the Technical Committee needs some time to collect the data in this relatively new area of technology.
4、It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion
5、 to a European standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the approp
6、riate issue of Update Standards. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in wr
7、iting to the Secretary of BSI Technical Committee PTI/17, Solid biofuels, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this
8、 committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using
9、the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document w
10、as last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 14774-3 A
11、ugust 2004 ICS 75.160.10 English version Solid biofuels - Methods for the determination of moisture content - Oven dry method - Part 3: Moisture in general analysis sample Biocombustilbles solides - Dtermination de lhumidit - Mthode par schage ltuve - Partie 3: Humidit de lchantillon pour analyse gn
12、rale Feste Biobrennstoffe - Verfahren zur Bestimmung des Wassergehaltes - Verfahren der Ofentrocknung - Teil 3: Wassergehalt in gewhnlichen Analysenproben This Technical Specification (CEN/TS) was approved by CEN on 19 January 2004 for provisional application. The period of validity of this CEN/TS i
13、s limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN
14、 and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national
15、standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN
16、 COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 14774-3:2004: E Licensed Co
17、py: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14774-3:2004 (E) 2 Contents Page Foreword3 1 Scope 5 2 Normative references5 3 Terms and definitions .5 4 Principle5 5 Apparatus .5 6 Sample preparation .6 7 Procedur
18、e .6 8 Calculation7 9 Precision.7 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14774-3:2004 (E) 3 Foreword This document (CEN/TS 14774-3:2004) has been prepared by Technical Committee CEN/TC 335 “Soli
19、d Biofuels”, the secretariat of which is held by SIS. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification : Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, Franc
20、e, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:
21、00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14774-3:2004 (E) 4 Introduction CEN/TS 14774-3:2004 consists of the following parts under the general title Solid Biofuels Methods for the determination of moisture content Oven dry methods. Part 1 Total moisture Reference method Part 2 Total moisture Simpl
22、ified method Part 3 Moisture in general analysis sample Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 05:40:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14774-3:2004 (E) 5 1 Scope This document describes the method of determining the moisture in the an
23、alysis sample by drying the sample in an oven. It is intended to be used for general analysis samples according to prCEN/TS 14780. The method described in this document is applicable to all solid biofuels. NOTE The term moisture content when used with biomass materials can be misleading since untrea
24、ted biomass frequently contains varying amounts of volatile compounds (extractives) which may evaporate when determining the moisture content of the general analyses sample by oven drying. Since biofuels in small particle size are very hygroscopic, their moisture content will vary with change of hum
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