1、 Reference number ISO 29042-6:2010(E) ISO 2010INTERNATIONAL STANDARD ISO 29042-6 First edition 2010-03-15 Safety of machinery Evaluation of the emission of airborne hazardous substances Part 6: Test bench method for the measurement of the separation efficiency by mass of air cleaning systems with du
2、cted outlet Scurit des machines valuation de lmission de substances dangereuses vhicules par lair Partie 6: Mthode sur banc dessai pour le mesurage de lefficacit de sparation massique des systmes dpuration dair avec sortie raccorde ISO 29042-6:2010(E) PDF disclaimer This PDF file may contain embedde
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7、er. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedISO 29042-6:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Organization for
8、 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 technical committee has been established has the
9、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 electrotechnical standardization. Internatio
10、nal 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 to the member bodies for voting. Publication a
11、s 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 identifying any or all such patent rights. I
12、SO 29042-6 was prepared by Technical Committee ISO/TC 199, Safety of machinery. ISO 29042 consists of the following parts, under the general title Safety of machinery Evaluation of the emission of airborne hazardous substances: Part 1: Selection of test methods Part 2: Tracer gas method for the meas
13、urement of the emission rate of a given pollutant Part 3: Test bench method for the measurement of the emission rate of a given pollutant Part 4: Tracer method for the measurement of the capture efficiency of an exhaust system Part 5: Test bench method for the measurement of the separation efficienc
14、y by mass of air cleaning systems with unducted outlet Part 6: Test bench method for the measurement of the separation efficiency by mass of air cleaning systems with ducted outlet Part 7: Test bench method for the measurement of the pollutant concentration parameter A room method for the measuremen
15、t of the pollutant concentration parameter and a decontamination index are to form the subjects of future parts 8 and 9. ISO 29042-6:2010(E) iv ISO 2010 All rights reservedIntroduction The structure of safety standards in the field of machinery is as follows: a) type-A standards (basic safety standa
16、rds) giving basic concepts, principles for design, and general aspects that can be applied to all machinery; b) type-B standards (generic safety standards) dealing with one safety aspect or one type of safeguard that can be used across a wide range of machinery: type-B1 standards on particular safet
17、y aspects (e.g. safety distances, surface temperature, noise); type-B2 standards on safeguards (e.g. two-hand controls, interlocking devices, pressure sensitive devices, guards); c) type-C standards (machine safety standards) dealing with detailed safety requirements for a particular machine or grou
18、p of machines. This part of ISO 29042 is a type-B standard as stated in ISO 12100. The requirements of this document can be supplemented or modified by a type-C standard. For machines which are covered by the scope of a type-C standard and which have been designed and built according to the requirem
19、ents of that standard, the requirements of that type-C standard take precedence. ISO/TC 199 has a mandate in this area to produce type-A and type-B standards, which will allow verification of conformity with the essential safety requirements. ISO 29042-6 is based on EN 1093-7:1998, amended by Amendm
20、ent 1:2008, published by the European Committee for Standardization (CEN). INTERNATIONAL STANDARD ISO 29042-6:2010(E) ISO 2010 All rights reserved 1Safety of machinery Evaluation of the emission of airborne hazardous substances Part 6: Test bench method for the measurement of the separation efficien
21、cy by mass of air cleaning systems with ducted outlet 1 Scope This part of ISO 29042 specifies a test bench method for the measurement of the separation efficiency by mass of an air cleaning system with a ducted outlet, operating under defined conditions. The method is applicable to those systems th
22、at clean the air of aerosols (smoke, dust, fume, mist), vapour or gas. Measurement of the separation efficiency by mass of an air cleaning system for an intended use can serve for the a) evaluation of the performance of the air cleaning system, b) evaluation of the improvement of the air cleaning sy
23、stem, c) comparison of air cleaning systems, d) ranking of air cleaning systems according to their separation efficiency by mass, and e) determination of the state of the art of air cleaning systems of the same intended use with respect to their separation efficiency by mass. 2 Normative references
24、The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 12100, Safety of machinery General principles
25、 for design Risk assessment and risk reduction ISO 29042-6:2010(E) 2 ISO 2010 All rights reserved3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 12100 and the following apply. 3.1 separation efficiency by mass sair cleaning system for a given polluta
26、nt, the ratio of the mass of pollutant retained by the air cleaning system (m 3 ) to the mass of pollutant entering the air cleaning system (m 1 ) during a given period NOTE The separation efficiency of an air cleaning system as a percentage is expressed as follows: 3 s 1 100 m m = (1) 4 Principle T
27、he principle of the measurement method is to operate the air cleaning system under defined conditions in a test bench and to determine the mass of the test substance in the air upstream and downstream of the air cleaning system. The test substance, which can be the real pollutant or a surrogate, sho
28、uld preferably be of low toxicity and compatible with the objectives of the method. 5 Description of the test bench The test bench consists of the air cleaning system fitted with suitable inlet and outlet ducts (see Figure 1). If use of an additional air mover is necessary, this shall be connected t
29、o the outlet duct. The air volume flow rate shall be set in accordance with the air cleaning system manufacturers instructions for use. Key 1 inlet duct 5 outlet duct 2 injection point(s) of test substance 6 measurement plane 2 3 measurement plane 1 7 air mover 4 air cleaning system under test ddiam
30、eter of duct Q in air volume flow rate entering the inlet duct Figure 1 Test arrangement (schematic layout) ISO 29042-6:2010(E) ISO 2010 All rights reserved 3The air flow rate of the air cleaning system is measured in the inlet and outlet ducts. The test substance is introduced into the inlet duct b
31、y a suitable method. The air in the inlet duct shall be filtered so that it contains no substance that could influence the test result. 6 Operation of the air cleaning system The air cleaning system shall be operated according to its intended use and with a specified test substance. For given catego
32、ries of air cleaning systems, properties of the test substance (e.g. nature, particle size distribution) and their upstream concentration shall be defined in appropriate type-C standards. The air cleaning system shall be operated in accordance with the manufacturers instructions for use. 7 Procedure
33、 The mass flow rate of the test substance shall be determined in the measurement planes 1 and 2 (see Figure 1) during the test period from times t 1to t 2 . The measurement procedures used shall comply with appropriate International Standards. For the measurement of the air flow rate, see ISO 3966,
34、ISO 4006, ISO 5167-1 and ISO 5168 1) . The same type of instrument should be used upstream and downstream of the air cleaning system. If this is not possible, the relationship between the two instruments shall be established for each test substance used. For certain applications it is useful to dete
35、rmine the separation efficiency according to particle size distribution (see ISO 7708). The separation efficiency of some air cleaning systems changes with time, e.g. filters. The sampling procedure shall take into account these changing efficiencies so that valid information can be obtained on the
36、efficiency of the separator in use. The measurement time shall be of sufficient duration to allow collection of samples of the test substance emitted during the representative use of the air cleaning system, including, for example, several cycles of the operations of a filter cleaning mechanism. Det
37、ailed test conditions and statistical analysis of the results shall be specified in appropriate type-C standards. 8 Expression of results The separation efficiency, s , of an air cleaning system is calculated as a percentage according to Equation (2): 2 1 2 1 2 3 2 s 11 1 d 100 1 100 1 100 d t t t t
38、 Ct m m mm Ct = (2) 1) In EN 1093-7, on which this part of ISO 29042 is based, reference was made to ISO 4053-1:1977 and ISO 7145:1982. Both International Standards have since been withdrawn and are no longer publicly available; at the time of publication of this part of ISO 29042, they had not been
39、 replaced by other International Standards. ISO 29042-6:2010(E) 4 ISO 2010 All rights reservedwhere m 1 is the mass of the test substance entering the air cleaning system; m 2 is the mass of the test substance not retained by the air cleaning system; m 3 is the mass of the test substance retained by
40、 the air cleaning system; C 1 is the mass concentration of the test substance entering the air cleaning system; C 2 is the mass concentration of the test substance at measurement plane 2. When the separation efficiency is required as a function of particle size distribution, m 1and m 2are measured f
41、or each particle size range of interest. 9 Test report The test report shall include at least the following information: a) reference to this part of ISO 29042 (“ISO 29042-6:2010”) and any associated type-C standards; b) description of the air cleaning system tested (manufacturer, model, type, versi
42、on, design, size, year of manufacture, serial number, etc.); c) operational data during tests, including air flow rates; d) test substance (nature, concentration and, for dusts, particle size distribution, moisture content, etc.); e) description of measurement procedures, including type of test benc
43、h used; f) measuring instruments used and their most recent calibration dates; g) environmental data (temperature, humidity, atmospheric pressure); h) description of the procedures used (e.g. list of standards) for concentration and flow rate measurements; i) test results; j) any comments on deviati
44、ons from any relevant standards; k) test laboratory; l) name of the person responsible for carrying out the test; m) date of testing; n) any additional comments. ISO 29042-6:2010(E) ISO 2010 All rights reserved 5Bibliography 1 ISO 3966, Measurement of fluid flow in closed conduits Velocity area meth
45、od using Pitot static tubes 2 ISO 4006, Measurement of fluid flow in closed conduits Vocabulary and symbols 3 ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements 4 ISO 516
46、8, Measurement of fluid flow Procedures for the evaluation of uncertainties 5 ISO 7708, Air quality Particle size fraction definitions for health-related sampling 6 ISO 29042-1, Safety of machinery Evaluation of the emission of airborne hazardous substances Part 1: Selection of test methods ISO 29042-6:2010(E) ICS 13.110 Price based on 5 pages ISO 2010 All rights reserved
