1、BS EN 16846-1:2017Photocatalysis Measurementof efficiency of photocatalyticdevices used for theelimination of VOC and odourin indoor air in active modePart 1: Batch mode test method in closedchamberBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 16846-1:2017 BR
2、ITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16846-1:2017. The UK participation in its preparation was entrusted to TechnicalCommittee RPI/13, Advanced technical ceramics.A list of organizations represented on this committee can be obtained on request to its se
3、cretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 .Published by BSI Standards Limited 2017ISBN 978 0 580 89120 5 ICS 13.040.20 Compliance with a British Standard c
4、annot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 16846-1:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCH
5、E NORM EN 16846-1 March 2017 ICS 13.040.20 English Version Photocatalysis - Measurement of efficiency of photocatalytic devices used for the elimination of VOC and odour in indoor air in active mode - Part 1: Batch mode test method in closed chamber Photocatalyse - Mesure de lefficacit des dispositi
6、fs photocatalytiques servant llimination, en mode actif, des COV et des odeurs dans lair intrieur - Partie 1 : Mthode dessai en enceinte confine Photokatalyse - Messung der Effizienz photokatalytischer Gerte im aktiven Modus zur Beseitigung flchtiger organischer Verbindungen (VOC) und von Geruch in
7、der Raumluft - Teil 1: Batch-Betrieb-Prfverfahren mit einer geschlossenen Kammer This European Standard was approved by CEN on 14 November 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 a
8、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). A
9、 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, Cypr
10、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 Un
11、ited 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. E
12、N 16846-1:2017 EBS EN 16846-1:2017EN 16846-1:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Symbols and abbreviations . 5 5 Principle . 5 6 Apparatus . 6 7 Test performance 6 7.1 Pollutants and concentrations . 6 7.1.1 General 6 7.1.2
13、Indoor air . 6 7.1.3 Industrial issue and challenge 7 7.2 Validation of the chamber 7 7.3 Test conditions . 7 7.4 Test procedure . 7 7.5 Mineralization test with continuous monitoring of CO2levels . 7 7.6 Analysis of reaction by-products and ozone . 8 7.7 Olfactive efficiency of the system 8 8 Test
14、report . 9 Annex A (informative) Schematic diagram of an air tight chamber . 10 Annex B (informative) Types of sorbent apparatus for thermal desorption cartridges . 11 Annex C (informative) Examples of a chamber blanks analysis. 12 Annex D (informative) Analysis of the reaction mixture 13 Annex E (i
15、nformative) Example of a plot of temperature and relative humidity, as well as developments in pollutants and CO2. 14 Annex F (informative) Example of test at low concentration with formaldehyde 16 Annex G (informative) CADR calculation 17 Annex H (informative) Calculation of CADR 19 BS EN 16846-1:2
16、017EN 16846-1:2017 (E) 3 European foreword This document (EN 16846-1:2017) has been prepared by Technical Committee CEN/TC 386 “Photocatalysis”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical t
17、ext or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for i
18、dentifying any or all such patent rights. EN 16846, Photocatalysis Measurement of efficiency of photocatalytic devices used for the elimination of VOC and odour in indoor air in active mode, is dedicated to photocatalytic devices for indoor air cleaning and is constituted by the following parts: Par
19、t 1: Batch mode test method in closed chamber; Part 2: In situ test under real conditions. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Cz
20、ech 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 the Unit
21、ed Kingdom. BS EN 16846-1:2017EN 16846-1:2017 (E) 4 1 Scope This European Standard describes the methodologies to be used in a laboratory air tight chamber to test prototype or commercial air cleaner systems with a maximum flow rate of 1,000 m3/h used for photocatalytic indoor air remediation. It is
22、 applicable to the treatment of atmospheres that are representative of the air inside buildings and workplaces. This protocol is applicable solely to photocatalytic systems alone or to combined systems that include a photocatalytic function. The photocatalytic function is demonstrated by verifying t
23、he mineralization of model VOCs to form CO2. 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
24、 the referenced document (including any amendments) applies. EN 13725, Air quality - Determination of odour concentration by dynamic olfactometry EN ISO 16017-1:2000, Indoor, ambient and workplace air - Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary
25、gas chromatography - Part 1: Pumped sampling (ISO 16017-1:2000) ISO 16000-3, Indoor air Part 3: Determination of formaldehyde and other carbonyl compounds in indoor air and test chamber air Active sampling method ISO 16000-6:2011, Indoor air Part 6: Determination of volatile organic compounds in ind
26、oor and test chamber air by active sampling on Tenax TA sorbent, thermal desorption and gas chromatography using MS or MS-FID 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 photocatalyst substance that performs one or more functions based on
27、 oxidation and reduction reactions under photoirradiation, including decomposition and removal of air and water contaminants, deodorization, and antibacterial, self-cleaning and antifogging actions 3.2 volatile organic compounds VOC all three classes of VOC as per EN ISO 16000-6:2011, 3.1,3.2 and 3.
28、3 3.3 system commercial or prototype air cleaner system that includes at least one photocatalytic function with or without a fan function 3.4 chamber blank analysis value of an analysis of the composition of the air inside the air tight chamber with no air cleaner system inside the chamber and after
29、 venting by taking sampling on special cartridge for VOC and aldehyde BS EN 16846-1:2017EN 16846-1:2017 (E) 5 3.5 test blank analysis value of an analysis of the composition of the air inside the air tight chamber with an air cleaner system operating inside the chamber, but with no pollutant introdu
30、ced, by taking sampling on special cartridge for VOC and aldehyde 3.6 cartridge blank analysis value of an analysis of the sorbent cartridge prior to use for the analysis of reaction by-products 3.7 TWA time-weighted average, measured or estimated over an 8-hour work schedule 3.8 Short-Term Exposure
31、 Limit STEL ceiling value that should never be exceeded in an occupational environment where these values are measured during a maximum period of 15 min Note 1 to entry: TLV (threshold limit value) is replaced by STEL. 3.9 indoor air air inside a closed environment 3.10 mineralization of model VOCs
32、oxidation of model VOCs to form CO24 Symbols and abbreviations ln : natural logarithm PE : polyethylene PMMA : Poly(methyl methacrylate) ppbv : parts per billion in volumes 109 ppmv : parts per million in volumes 106 PTFE : Polytetrafluoroethylene RH : relative humidity 5 Principle The system is pla
33、ced inside an air tight chamber and exposed to a model VOC mixture. Changes in pollutant concentrations due to operation of the system, as well as the production of CO2and the appearance of by-products, are measured against time. BS EN 16846-1:2017EN 16846-1:2017 (E) 6 6 Apparatus Standard laborator
34、y apparatus, in addition to the following elements: 6.1 Air tight chamber. Air tight chamber with a volume of at least one m3fitted with an air homogenizing device with a nominal hourly flow rate (m3/h) 100 times greater than the volume of the chamber. The ratio between the system volume and the cha
35、mber volume shall be less than or equal to 0,10 (see Figure A.1 in Annex A). The chamber has sampling ports and throughputs for electrical connections. The behaviour of the material used to build the chamber in relation to pollutants, UV radiation, sorption and degassing phenomena shall be known and
36、 controlled. Examples of materials: glass, PMMA, PE, PTFE, stainless steel, etc. 6.2 Analysis apparatus. All apparatus used for continuous monitoring of the air composition inside the chamber in the concentration range specified in Clause 6 can be used with a detection limit at around 5 ppbv for the
37、 test conditions stated in 7.1.2, or at 10 % of the initial concentration of the relevant pollutants as specified in 7.1.3. Analyses of reaction by-products are performed according to the methods adapted to the characterization of the indoor air quality. Reference will be made to the following stand
38、ards: ISO 16000-3 and ISO 16000-6; A description of a few sorbents are included in Annex B of this standard. See also EN ISO 16017-1:2000, Annexes C, D and E. Temperature and relative humidity are analysed on line by appropriate analysers. 7 Test performance 7.1 Pollutants and concentrations 7.1.1 G
39、eneral There are two possible concentration ranges depending on the outcome of the test. For the cleaning of indoor air, the test is carried out in the range ppbv to ppmv. Where the issue is directly related to the exposure of workers, the concentration will be related to the TWA and STEL of the rel
40、evant products. 7.1.2 Indoor air This standard requires the use of the following mixture (pollutants representative of the chemical families found in the indoor air pollution): Acetone, acetaldehyde, heptane, toluene and formaldehyde. The test is to be run on both concentrations. test with search fo
41、r reaction by-products: (50 25 %) ppbv per compound at 22 C and 1 atm. test used to demonstrate the photocatalytic activity with monitoring of the mineralization of VOCs into CO2: (1 000 10 %) ppbv per compound at 22 C 1Patm. BS EN 16846-1:2017EN 16846-1:2017 (E) 7 NOTE According to the present stat
42、e of knowledge of analytical techniques, this test is the only means of monitoring the conversion into CO2 against ambient concentration. 7.1.3 Industrial issue and challenge Concentrations and pollutants will be chosen to reflect the issues and challenges currently facing the industrial sector. VOC
43、s will undergo compound-by-compound analysis (e.g. by gas chromatography). NOTE According to the present state of knowledge of analytical techniques, this test is the only means of monitoring the conversion into CO2 against ambient concentration. 7.2 Validation of the chamber The chamber is validate
44、d by measuring its leak tightness via its leakage rate of an inert gas or by pollutant mixture disappearance. It is necessary to check that the air homogenizing fan does not generate VOCs. The amount of VOCs released by the chamber prior to the test and captured on sorbent cartridges shall be less t
45、han 5 ppbv/compounds and less than 50 ppbv for the sum. It is recommended that the chamber be validated by injecting the reaction mixture into the chamber with no system present and monitoring its behaviour during an 8-h period with the air homogenizing fan switched on. Measured losses shall be less
46、 than 10 % of the initial concentration during this period. The chamber shall be validated following each use of a new pollutant. 7.3 Test conditions Initial test conditions are as follows: chamber temperature (22 2) C; relative humidity in the chamber of (50 5) %. NOTE The humidity level in the cha
47、mber is not regulated during the test. Temperature T (C) and relative humidity RH (%) are recorded continuously. The chamber is considered to be clean when the compounds to be analysed are not detected by the analysis system run prior injecting the pollutants (examples in Annexes B and C). For indus
48、trial-sector issues, the total measured VOC concentration shall be less than 5 % of the VOCs injected into the chamber. 7.4 Test procedure The system is placed in the centre of the chamber which is then flushed/vented with clean humidified air or with any other process that guarantees the RH conditi
49、ons and blank quality specified in 7.3 for a period of one night. The system is switched on during venting of the chamber in order to make sure that the system has been cleaned with clean air before taking any measurement. The system is operated for a period of 2 h during which data on T, RH and VOCs is recorded prior injecting the pollutants. The system is then switched off. The analysis systems that continuously monitor VOCs and CO2are operating prior the injection of the pollutants and throughout the whole period of analysis.
