DIN EN ISO 29462-2013 Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resistance to airflow (ISO 29462 2013).pdf

1、November 2013 Translation by DIN-Sprachendienst.English price group 21No 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).I

2、CS 13.040.20; 91.140.30!%*1“2071493www.din.deDDIN EN ISO 29462Field testing of general ventilation filtration devices and systems for insitu removal efficiency by particle size and resistance to airflow(ISO 29462:2013);English version EN ISO 29462:2013,English translation of DIN EN ISO 29462:2013-11

3、Betriebserprobung von Filtereinrichtungen und -systemen fr die allgemeine Lftunghinsichtlich ihrer Abscheideeffizienz im eingebauten Zustand bezogen auf diePartikelgre und den Druckverlust (ISO 29462:2013);Englische Fassung EN ISO 29462:2013,Englische bersetzung von DIN EN ISO 29462:2013-11Essais in

4、 situ de filtres et systmes de ventilation gnrale pour la mesure de lefficaciten fonction de la taille des particules et de la perte de charge (ISO 29462:2013);Version anglaise EN ISO 29462:2013,Traduction anglaise de DIN EN ISO 29462:2013-11www.beuth.deDocument comprises pagesIn case of doubt, the

5、German-language original shall be considered authoritative.5311.13 DIN EN ISO 29462:2013-11 A comma is used as the decimal marker. National foreword This standard includes safety requirements. This document (EN ISO 29462:2013) has been prepared by Technical Committee ISO/TC 142 “Cleaning equipment f

6、or air and other gases” in collaboration with Technical Committee CEN/TC 195 “Air filters for general air cleaning”. The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-09-21 AA Luftfilter

7、 (SpA CEN/TC 195 und ISO/TC 142) of Section Allgemeine Lufttechnik. Representatives of manufacturers and users of air filters, and of research and testing institutes contributed to this standard. The International Standards referred to in this document and taken over as European Standards have been

8、published as the corresponding DIN EN ISO Standards with the same number. Where the International Standards and publications referred to are not also DIN ISO Standards with the same number, there are no national standards available. In addition to the legal units of measurement, this standard also u

9、ses the units “fpm”, “ft”, “inch” and “cfm”. It is important to note that according to the German law on units in metrology, the use of these units is not permitted in official or business communications within Germany. The indication of these units solely serves to facilitate the communication with

10、 those countries where these units are used (import-export business). 2EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 29462 March 2013 ICS 91.140.30 English Version Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resis

11、tance to airflow (ISO 29462:2013) Essais in situ de filtres et systmes de ventilation gnrale pour la mesure de lefficacit en fonction de la taille des particules et de la perte de charge (ISO 29462:2013) Betriebserprobung von Filtereinrichtungen und -systemen fr die allgemeine Lftung hinsichtlich ih

12、rer Abscheideeffizienz im eingebauten Zustand bezogen auf die Partikelgre und den Druckverlust (ISO 29462:2013) This European Standard was approved by CEN on 1 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea

13、n 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (

14、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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgi

15、um, Bulgaria, Croatia, Cyprus, 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, Slovakia, Slovenia, Spain, Sweden, Switzer

16、land, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref

17、. No. EN ISO 29462:2013: E Contents PageForeword . 4Introduction . 51 Scope . 62 Normative references 63 Terms, definitions, and abbreviations . 63.1 Terms and definitions . 63.2 Abbreviations . 84 Test equipment and setup 84.1 Particle counter 84.2 Diluter . 84.3 Pump 94.4 Sampling system 94.5 Air

18、velocity measurement instrument . 114.6 Relative humidity measurement instrument 114.7 Temperature measurement instrument . 114.8 Resistance to airflow measurement instrument . 114.9 Test equipment maintenance and calibration . 125 Site evaluation .125.1 General . 125.2 Filter installation pre-testi

19、ng inspection 125.3 Approval for testing 126 Test procedure 136.1 Air velocity 136.2 Relative humidity 136.3 Temperature 136.4 Resistance to airflow 146.5 Removal efficiency . 146.6 Sampling probes 177 Expression of results 197.1 General information . 197.2 Data collection . 208 Errors and data anal

20、yses 218.1 General . 218.2 Relative humidity 218.3 Air temperature 218.4 Aerosol composition 218.5 Uniformity of aerosol concentration 228.6 Coincidence errors Particle counter .228.7 Particle losses. 229 Calculation of results .229.1 Calculation of removal efficiency 229.2 Calculation of uncertaint

21、y . 259.3 Coefficient of variation (CV) 2510 Optional enhanced test system 2610.1 Application of enhanced test 2610.2 Principle of the enhanced test system 2710.3 Determination of the corrected particle size 2810.4 Presentation of results . 29Annex A (informative) Filter installation pre-testing ins

22、pection form 302DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) Annex B (informative) Approval for testing form 33Annex C (informative) Example of how to complete testing .35Bibliography .51Page3DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) Foreword This document (EN ISO 29462:2013) has been prepare

23、d by Technical Committee ISO/TC 142 “Cleaning equipment for air and other gases“ in collaboration with Technical Committee CEN/TC 195 “Air filters for general air cleaning” the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by pub

24、lication of an identical text or by endorsement, at the latest by September 2013, and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CE

25、NELEC shall not be held responsible for identifying any or all such patent rights. 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 Repu

26、blic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endo

27、rsement notice The text of ISO 29462:2013 has been approved by CEN as EN ISO 29462:2013 without any modification. 4DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) IntroductionThe purpose of this International Standard is to provide a test procedure for evaluating the in-situ performances of general v

28、entilation filtration devices and systems. Although any filter with a filtration efficiency at or above 99% or at or below 30% when measured at 0,4 m could theoretically be tested using this International Standard, it may be difficult to achieve statically acceptable results for these type of filtra

29、tion devices.Supply air to the Heating, Ventilation and Air-Conditioning (HVAC) system contains viable and non-viable particles of a broad size range. Over time these particles will cause problems for fans, heat exchangers and other system parts, decreasing their function and increasing energy consu

30、mption and maintenance. For health issues, the fine particles (1,0 m will therefore have lower accuracy and so the results should be interpreted with respect to this.During in-situ measurement conditions, the optical properties of the particles may differ from the optical properties of the particles

31、 used for calibrating the particle counter and testing it in the laboratory. Thus the particle counter could size the particles differently but count the overall number of particles correctly.By adding an extra reference filter, the effect of varying measuring conditions can be reduced. Additionally

32、, using this enhanced test method, the results can be used to correct the measured efficiencies in relation to the efficiency of the reference filter measured in laboratory using a standardized test aerosol.The results from using the standard method or the enhanced method will give both users and ma

33、nufacturers a better knowledge of actual filter and installation properties.It is important to note that field measurements generally result in larger uncertainties in the results compared to laboratory measurements. Field measurements may produce uncertainty from temporal and spatial variability in

34、 particle concentrations, from limitations on sampling locations due to air handling unit configurations, and from the use of field instrumentation. These factors may result in lower accuracy and precision in the calculated fractional efficiencies compared to laboratory measurements. This Internatio

35、nal Standard is intended to provide a practical method in which the accuracy and precision of the result are maximized (and the precision of the result quantified) by recommending appropriate sampling locations, sample quantities, and instrumentation. This International Standard is not intended to s

36、erve as a filter performance rating method. The results obtained from the test method described in this International Standard do not replace those obtained through tests conducted in the laboratory.5DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) 1 ScopeThis International Standard describes a proced

37、ure for measuring the performance of general ventilation air cleaning devices in their end use installed configuration. The performance measurements include removal efficiency by particle size and the resistance to airflow. The procedures for test include the definition and reporting of the system a

38、irflow.The procedure describes a method of counting ambient air particles of 0,3 m to 5,0 m upstream and downstream of the in-place air cleaner(s) in a functioning air handling system. The procedure describes the reduction of particle counter data to calculate removal efficiency by particle size.Sin

39、ce filter installations vary dramatically in design and shape, a protocol for evaluating the suitability of a site for filter evaluation and for system evaluation is included. When the evaluated site conditions meet the minimum criteria established for system evaluation, the performance evaluation o

40、f the system can also be performed according to this procedure.This International Standard also describes performance specifications for the testing equipment and defines procedures for calculating and reporting the results. This International Standard is not intended for measuring performance of po

41、rtable or movable room air cleaners or for evaluation of filter installations with and expected filtration efficiency at or above 99 % or at or below 30 % when measured at 0,4 m.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated

42、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7726, Ergonomics of the thermal environment Instruments for measuring physical quantitiesISO 14644-3, Cleanrooms and associated controlled environ

43、ments Part 3: Test methodsISO 21501-4, Determination of particle size distribution Single particle light interaction methods Part 4: Light scattering airborne particle counter for clean spaces3 Terms, definitions, and abbreviations3.1 Terms and definitionsFor the purpose of this document, the follow

44、ing terms and definitions apply.3.1.1air filter bypassunfiltered air that has passed through the AHU filter installation but remained unfiltered because it bypassed the installed air filters6DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) 3.1.2air velocityrate of air movement at the filterNote 1 to e

45、ntry: It is expressed in m/s (fpm) to three significant figures.3.1.3allowable measurable concentration of the particle counterfifty percent of the maximum measurable concentration as stated by the manufacturer of the particle counter3.1.4coefficient of variationCVstandard deviation of a group of me

46、asurements divided by the mean3.1.5diluterdilution systemsystem for reducing the sampled concentration to avoid coincidence error in the particle counter3.1.6filter efficiencyremoval efficiency of a filter as determined by this International Standard, where upstream and downstream particle count mea

47、surements are taken close to the filter being tested3.1.7filter installationfiltration devices and systems such as a single filter or a group of filters mounted together with the same inlet and outlet of air3.1.8general ventilationprocess of moving air from outside the space, recirculated air, or a

48、combination of these into or about a space or removing it from the space3.1.9isoaxial samplingsampling in which the flow in the sampler inlet is moving in the same direction as the flow being sampled3.1.10isokinetic samplingtechnique for air sampling such that the probe inlet air velocity is the sam

49、e as the velocity of the air surrounding the sampling pointSource: ISO 29464:2011; 3.1.1443.1.11particle counterdevice for detecting and counting numbers of discrete airborne particles present in a sample of airSource: ISO 29464:2011; 3.1.273.1.12particle size rangedefined particle counter channel3.1.13reference filtersmall dry media-type filter that has been laboratory tested for removal efficiency by particle size7DIN EN ISO 29462:2013-11 EN ISO 29462:2013 (E) 3.1.14removal efficiency by particle sizeratio of the number of particles retaine