1、May 2017 English price group 18No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.040.40!%e_#“2666000www.din.deDIN
2、EN 14790Stationary source emissions Determination of the water vapour in ducts Standard reference method;English version EN 14790:2017,English translation of DIN EN 14790:2017-05Emissionen aus stationren Quellen Bestimmung von Wasserdampf in Kanlen Standardreferenzverfahren;Englische Fassung EN 1479
3、0:2017,Englische bersetzung von DIN EN 14790:2017-05Emissions de sources fixes Dtermination de la vapeur deau dans les conduits Mthode de rfrence normalise;Version anglaise EN 14790:2017,Traduction anglaise de DIN EN 14790:2017-05SupersedesDIN EN 14790:200604www.beuth.deDocument comprises 47 pagesDT
4、ranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.05.17This standard has been included in the VDI/DIN Handbook on air quality, Volume 5. DIN EN 14790:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN 1
5、4790:2017) has been prepared by Working Committee CEN/TC 264/WG 16 “Reference measurement methods for NOx, SO2, O2, CO and water vapour emissions” (Secretariat and Convenership: AFNOR, France) of Technical Committee 264 “Air quality” (Secretariat: DIN, Germany), with the active participation of Germ
6、an experts of Kommission Reinhaltung der Luft im VDI und DIN Normenausschuss KRdL (Commission on Air Pollution Prevention of VDI and DIN Standards Committee KRdL). The responsible German body involved in its preparation was VDI/DIN-Kommission Reinhaltung der Luft (KRdL) Normenausschuss, Working Comm
7、ittee NA 134-04-01 AA “Emission measurement techniques”. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5725-2 DIN ISO 5725-2 ISO 5725-6 DIN ISO 5725-6 Amendments This standard differs from DIN EN 14790:2006-04 as follows: a) in Clause
8、 1, Directive 2000/76/EC has been replaced by Directive 2010/75/EU; b) in Clause 2, the normative reference to EN 13284-1 has been replaced by EN 15259 regarding requirements for measurement sections and sites and for the measurement objective and plan; c) in Clause 3, definitions have been revised
9、taking into account EN 15259 definitions and the new version of VIM (2012); the detection limit has been deleted from the list of definitions and performance characteristics as repeatability at zero is more suitable; d) in Clause 4, symbols and abbreviations used in the main section of the document
10、have been included; e) in 8.1, requirements for measurement planning with reference to EN 15259 have been included; f) in 8.2, a reference to EN 15259 has been included for determining the homogeneity of the flue gas; g) in Clause 9, symbols have been aligned with EN 15259; h) in Clause 10, the stan
11、dard deviation sr,limithas been recalculated according to new rules specified in EN 14793; i) in Annex A, an estimate of the uncertainty calculated on the basis of reproducibility has been added and replaces the expression “reproducibility confidence interval”; j) in Annex D, the presentation of the
12、 calculation of the uncertainty budget has been improved. Previous editions DIN EN 14790: 2006-04 DIN EN 14790:2017-05 3 National Annex NA (informative) Bibliography DIN ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of rep
13、eatability and reproducibility of a standard measurement method DIN ISO 5725-6, Accuracy (trueness and precision) of measurement methods and results Part 6: Use in practice of accuracy values DIN EN 14790:2017-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
14、 14790 January 2017 ICS 13.040.40 Supersedes EN 14790:2005English Version Stationary source emissions - Determination of the water vapour in ducts - Standard reference method Emissions de sources fixes - Dtermination de la vapeur deau dans les conduits - Mthode de rfrence normalise Emissionen aus st
15、ationren Quellen - Bestimmung von Wasserdampf in Kanlen - StandardreferenzverfahrenThis European Standard was approved by CEN on 26 September 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
16、 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German)
17、. 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, C
18、yprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
19、 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No
20、. EN 14790:2017 EEN 14790:2017 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 6 4 Symbols and abbreviations 11 4.1 Symbols 11 4.2 Abbreviated terms . 12 5 Principle 12 5.1 General . 12 5.2 Adsorption or condensation/adsorption method 12 5.3 Tem
21、perature method . 12 6 Description of the measuring system . 13 6.1 General . 13 6.2 Sampling probe . 13 6.3 Filter housing . 13 6.4 Particle filter 14 6.5 Trapping system . 14 6.6 Cooling system (optional) . 14 6.7 Sample gas pump 14 6.8 Gas volume meter 14 6.9 Barometer . 15 6.10 Balance . 15 6.11
22、 Temperature measurement . 15 7 Performance characteristics of the SRM 15 8 Field operation 16 8.1 Measurement planning 16 8.2 Sampling strategy. 17 8.2.1 General . 17 8.2.2 Measurement section and measurement plane 17 8.2.3 Minimum number and location of measurement points . 17 8.2.4 Measurement po
23、rts and working platform 17 8.3 Assembling the equipment . 17 8.4 Leak test. 18 8.5 Performing sampling 18 8.5.1 Introduction of the sampling probe in the duct 18 8.5.2 Sampling 18 8.6 Repeatability of the weighing 19 8.7 Procedure for gas streams saturated with water (droplets present) . 19 9 Water
24、 vapour determination . 19 10 Equivalence of an alternative method 21 11 Measurement report . 21 DIN EN 14790:2017-05 EN 14790:2017 (E) 3 Annex A (informative) Validation of the method in the field . 22 A.1 General . 22 A.2 Characteristics of installations 22 A.3 Repeatability and reproducibility in
25、 the field 23 A.3.1 General . 23 A.3.2 Repeatability 24 A.3.3 Reproducibility 25 Annex B (normative) Determination of water vapour concentration for water saturated gas, at pref= 101,325 kPa 26 Annex C (informative) Type of sampling equipment 30 Annex D (informative) Example of assessment of complia
26、nce of standard reference method for water vapour with given uncertainty requirements 31 D.1 General . 31 D.2 Elements required for the uncertainty determinations . 31 D.3 Example of an uncertainty calculation 31 D.3.1 Specific conditions in the field . 31 D.3.2 Performance characteristics 32 D.3.3
27、Model equation and application of the rule of the uncertainty propagation . 34 D.3.3.1 Water vapour content . 34 D.3.3.2 Effect of the collection efficiency . 35 D.3.3.3 Calculation of the combined uncertainty of the water vapour content taking into account the collection efficiency . 35 D.3.3.4 Cal
28、culation of sensitivity coefficients 36 D.3.3.5 Calculation of the standard uncertainty of the collection efficiency . 36 D.3.3.6 Calculation of the standard uncertainty of measured dry gas volume corrected to standard conditions . 37 D.3.3.7 Calculation of the combined uncertainty of the water vapo
29、ur content 38 D.3.3.8 Results of standard uncertainties calculations 38 D.3.4 Estimation of the combined uncertainty 41 Annex E (informative) Significant technical changes . 42 Bibliography . 43 DIN EN 14790:2017-05 EN 14790:2017 (E) 4 European foreword This document (EN 14790:2017) has been prepare
30、d by Technical Committee CEN/TC 264 “Air quality”, the secretariat of which is held by DIN. This document supersedes EN 14790:2005. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2017, and c
31、onflicting national standards shall be withdrawn at the latest by July 2017. 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 identifying any or all such patent rights. Annex E p
32、rovides details of significant technical changes between this document and the previous edition. 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, Cypr
33、us, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and th
34、e United Kingdom. DIN EN 14790:2017-05 EN 14790:2017 (E) 5 1 Scope This European Standard specifies the standard reference method (SRM) based on a sampling system with a condensation/adsorption technique to determine the water vapour concentration in the flue gases emitted to atmosphere from ducts a
35、nd stacks. This European Standard specifies the performance characteristics to be determined and performance criteria to be fulfilled by measuring systems based on the measurement method. It applies to periodic monitoring and to the calibration or control of automated measuring systems (AMS) permane
36、ntly installed on a stack, for regulatory or other purposes. This European Standard specifies criteria for demonstration of equivalence of an alternative method to the SRM by application of EN 14793:2017. This European Standard is applicable in the range of water vapour content from 4 % to 40 % as v
37、olume concentrations and of water vapour mass concentration from 29 g/m3to 250 g/m3as a wet gas, although for a given temperature the upper limit of the method is related to the maximum pressure of water in air or in the gas. In this European Standard all the concentrations are expressed at standard
38、 conditions (273 K and 101,3 kPa). NOTE 1 For saturated conditions the condensation/adsorption method is not applicable. Some guidance is given in this European Standard to deal with flue gas when droplets are present. This European Standard has been validated during field tests on waste incineratio
39、n, co-incineration and large combustion plants. It has been validated for sampling periods of 30 min in the volume concentration range of 7 % to 26 %. NOTE 2 The characteristics of installations, the conditions during field tests and the values of repeatability and reproducibility in the field are g
40、iven in Annex A. 2 Normative references The following documents, 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 (in
41、cluding any amendments) applies. EN 1911, Stationary source emissions - Determination of mass concentration of gaseous chlorides expressed as HCl - Standard reference method EN 14791:2017, Stationary source emissions Determination of mass concentration of sulphur oxides Standard reference method EN
42、14793:2017, Stationary source emission Demonstration of equivalence of an alternative method with a reference method EN 15259:2007, Air quality - Measurement of stationary source emissions - Requirements for measurement sections and sites and for the measurement objective, plan and report ISO/IEC Gu
43、ide 98-3:2008, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) DIN EN 14790:2017-05 EN 14790:2017 (E) 6 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 standard reference method SRM referenc
44、e method prescribed by European or national legislation SOURCE: EN 15259:2007 3.2 reference method RM measurement method taken as a reference by convention, which gives the accepted reference value of the measurand Note 1 to entry: A reference method is fully described. Note 2 to entry: A reference
45、method can be a manual or an automated method. Note 3 to entry: Alternative methods can be used if equivalence to the reference method has been demonstrated. SOURCE: EN 15259:2007 3.3 measurement method method described in a written procedure containing all the means and procedures required to sampl
46、e and analyse, namely field of application, principle and/or reactions, definitions, equipment, procedures, presentation of results, other requirements and measurement report SOURCE: EN 14793:2017 3.4 alternative method AM measurement method which complies with the criteria given by this European St
47、andard with respect to the reference method Note 1 to entry: An alternative method can consist of a simplification of the reference method. SOURCE: EN 14793:2017 3.5 measuring system set of one or more measuring instruments and often other devices, including any reagent and supply, assembled and ada
48、pted to give information used to generate measured quantity values within specified intervals for quantities of specified kinds SOURCE: JCGM 200:2012 DIN EN 14790:2017-05 EN 14790:2017 (E) 7 3.6 automated measuring system AMS entirety of all measuring instruments and additional devices for obtaining
49、 a result of measurement Note 1 to entry: Apart from the actual measuring device (the analyser), an AMS includes facilities for taking samples (e.g. probe, sample gas lines, flow meters and regulator, delivery pump) and for sample conditioning (e.g. dust filter, pre-separator for interferents, cooler, converter). This definition also includes testing and adjusting devices that are required for functional checks and, if applicable, for commissioning. Note 2 to entry: The term “automated measuring system” (AMS) is typically use
