1、STD.BSI BS EN 12835-ENGL 20111 W Lb24bb7 0888082 992 E BRITISH STANDARD Airtight shutters - Air permeability test The European Stanard EN 128352000 has the status of a British Standard ICs 91.060.50 NO COPYING WITHOUT BSI PEBMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12835:ZOOl STDoBSI BS EN
2、 1283C-ENGL 2001 D LbZqbb9 0888083 827 W BS EN 12835:2001 md. No. National foreword Date Comments This British Standard is the official English language version of EN 128352000. The UK participation in its preparation was entrusted by Technical Committee B/538, Doors, windows, shutters, hardware and
3、 curtain walling, to Subcommittee B/538/3, Domestic shutters and blinds, which has the responsibility to: - aid enquirers to understand the text, - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretati
4、on, or proposals for change, and keep the UK interests informed; them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this doc
5、ument may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of
6、British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copy
7、right notice displayed in this document indicates when the document was last issued. This Bfitish Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on15Janu
8、ary2001 O BSI 01-2001 ISBN O 580 36890 4 Amendments issued since publication STD-BSI BS EN 12835-ENGL 2001 Lb29bb7 0888089 7b5 EUROPEAN STANDARD EN 12835 NORME EUROPENNE EUROPISCHE NORM November 2000 ICs 91 .O6050 English version Airtight shutters - Air permeability test Fermetures tanches - Essai d
9、e pemabilit lair Luftdichte Abschlsse - Prfung der Luftdurchlssigkeit This European Standard was approved by CEN on 27 October 2000. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan
10、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lan
11、guage made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, I
12、celand, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Management Centre: rue de Stassart, 36 6-1050 Brussels O 2000 CEN All rights of explo
13、itation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12835:2000 E STD.BS1 BS EN 12835-ENGL 2001 m 1624bL9 0888085 bT1 m Page 2 EN 12835:2000 CONTENTS Page Foreword . 3 Scope 3 Normative reference 3 Terms and definitions 4 Principle 4 Apparatus (see figure 1)
14、4 Test specimen . 5 Test method 6 7.1 7.2 Conditions of testing . 6 Airflow rate measurement . 6 8 Expression of results . 6 9 Test report . 7 ANNEX A (normative) Pressure sequence for air permeability tests . 8 ANNEX B (normative) Testing of the rig for airtightness . 9 STD.BSI BS EN 12835-ENGL 200
15、1 lb24bb OBBBOBb 538 Page 3 EN 12835:2000 Foreword This European Standard has been prepared by Technical Committee CENTTC 33 “Doors, windows, shutters, building hardware and curtain walling“, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national st
16、andard, either by publication of an identical text or by endorsement, at the latest by May 2001 , and conflicting national standards shall be withdrawn at the latest by May 2001. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Tr
17、ade Association, and supports essential requirements of EU Directive(s). According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, German
18、y, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. It is part of a series of standards dealing with blinds and shutters for buildings as defined in prEN 1221 6: 1 995. The additional thermal resistance provided by shutter
19、s positioned in front of windows in the closed position depends on their air permeability in the conditions defined by the standards prEN IS0 10077-1 :1999, the criteria of attribution of a class of air permeability being developped in prEN 131 25:1998. The annexes A and B are normative. 1 Scope Thi
20、s European Standard specifies a test method for determining the air permeability of shutters that claim to conform to class 5 of thermal resistance “airtight shutters“ according to standards prEN IS0 10077-1 :1999 and prEN 131 251 998, when allocation cannot be given by geometrical criteria. 2 Norma
21、tive reference This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any o
22、f these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). prEN IS0 10077-1 :1999 “Thermal Performance of windows, doors and shutters - Calculatio
23、n of thermal transmittance - Part 1 : simplified method (ISO/FDIS 10077-1 :1999)“ EN 121 14:2000 “Thermal performance of buildings - Air permeability of building components and building elements - Laboratory test method“ Page 4 EN 12835:2000 prEN 1221 6:1995 “Terminology and definitions for blinds a
24、nd shutters“ prEN 131 251 998 “Shutters and blinds - Additional thermal resistance - Classification - Attribution of a class to a product“ 3 Terms and definitions For the purposes of this Standard, the terms and definitions given in prEN 12216:1995, and EN 121 14:2000 together with the following app
25、ly : 3.1 test pressure positive difference of static air pressure AP between the two faces of the test specimen. It is expressed in pascals Pa. 3.2 positive difference of pressure positive the pressure acting on the external face of the test specimen is greater than that acting on the internal face.
26、 3.3 air permeability airflow rate crossing the test specimen, under ambiant conditions, expressed in m3/h and by surface area of the shutter expressed in m* and for a positive difference of pressure of 10 Pa. 3.4 overall surface area area calculated from the overall dimensions of the test specimen.
27、 4 Principle The principle of the test adopted is specified in EN 121 14:2000, the test conditions being simplified in order to take into account the low difference in pressure involved in the thermal exchanges between the external face and the internal face of the shutters. The test consists of a s
28、et of positive air pressure difference steps and measurement of the air flow rate of each step with a suitable device. The air permeability of the shutter is determined in clause 8. 5 Apparatus (see figure 1) The test apparatus includes : - An airtight casing with an opening in which the test specim
29、en is installed. The casing is installed in a closed room. The airtightness of the casing is checked according to Annex B. This casing is also sufficiently rigid to withstand test pressures without sustaining damage that could interfere with the results. - Means of applying a controlled difference o
30、f air pressure to the test specimen (up to 100 Pa). STD BSI BS EN 12835-ENGL 2001 1b2LibbS 08BBOBB 300 Page 5 EN 12835:2000 - Means of producing rapid changes of air pressure differences, within specified limits. - An apparatus for measuring the air flow rate in the casing capable of evaluating air
31、leakage through the test rig to an accuracy of 5% in relation to the permitted values of the class, calibration at normal temperature and air pressure (20 OC and 101,3 k Pa). - Means of measuring controlled pressure (range O to 100 Pa) with an accuracy of 10 %. Key 1 Flowmeter 2 Blower 3 Manometer 4
32、 Test specimen Figure 1 - Example of apparatus (from EN 121 14:2000) 6 Test specimen The test specimen is provided by the manufacturer in the dimensions Hx L = (1,40 m f 0,40 m) x (1,45 m k 0,40 m) and equipped with all its accessories. This includes the arrangements laid out and described for air t
33、ightness (designation of air tightness profiles, rebates, etc.). It is mounted in the rig using a frame sufficiently resistant to withstand test pressures. The airtightness between the test rig and the frame shall be ensured. The installation of the test sample in the rig shall conform to the instal
34、lation instructions supplied by the applicant and respecting the peripheral gaps, fixed plumb in both directions, STDmBSI BS EN L2835-ENGL 2001 M Lb24bb9 0888087 247 Page 6 EN 128352000 level, square and without visible twists or bends induced by the fixings. It shall be clean and dry- The test samp
35、le shall be able to function normally. 7 Test method 7.1 Conditions of testing The preliminary measurements of the air temperature, atmospheric pressure and relative humidity shall be in accordance with the specifications in EN 121 14:2000. The pressure difference steps are : - maximum pressure diff
36、erence, Ap, = 50 Pa - minimum pressure difference, Apmin = 10 Pa It is the smallest pressure difference measurable with an accuracy of 1 Pa. - 5 intermediate steps : 15 Pa, 20 Pa, 25 Pa, 30 Pa, 40 Pa. 7.2 Airflow rate measurement Open and close all mobile parts of the curtain twice before blocking t
37、hem in closed position. Apply 3 air pressure pulses at 56 Pa. The duration of pressure increase shall not be less than 1 s. Each pulse shall be maintained for at least 3 s. Apply then the air pressure difference at each of the steps : 10 Pa, 15 Pa, 20 Pa, 25 Pa, 30 Pa, 40 Pa, 50 Pa. Measure and reco
38、rd the value of the corresponding air flow rates Q, in m3/h. The measurement is carried out when the air pressure has stabilised with a minimum duration of 10 s per step. Carry out the corrections of air temperature, atmospheric pressure, relative humidity for the reference conditions as specified i
39、n EN 121 14:2000. 8 Expression of results At each step of the pressure difference, express : a) Qds, the airflow rate reduced to the m2 of the overall surface area S of the test specimen : QdS, m3/h a m2 ; b) Plot QdS, against the corresponding pressure difference using a log - log plot ; c) Determi
40、ne the flow coefficient C and the exponent n from the formulae ads = C(AP)“ and their confidence intervals using the method of identification given in annex B of EN 121 14:2000 (linear regression technique) ; d) Give the value of the air permeability of the shutter under a pressure of 10 Pa calculat
41、ed from the formulae. STD.BS1 BS EN 12835-ENGL 2001 1b24bb 0888090 Tb7 Page 7 EN 12835:2000 9 Testreport The test report shall include : a) reference to this standard and to EN 121 14:2000 ; b) a concise description of the test specimen, including at least the following information, checked before t
42、he test : - manufacturers name and specific brand ; - width, height, overall area, type of materials and, if applicable, their surface treatment ; - plans with details of the test specimen or the reference to documents which give this information. This plan shall show the position of the fixing devi
43、ces ; - other information as appropriates. c) description of the test conditions, including at least the following : - air temperature in the laboratory ; - details of mounting the test specimen in its surround (in the casing) ; - maximum and minimum pressure differences ; - testing organisation and
44、 date of test, d) graph showing the air flow rate as a function of pressure difference ; e) the leakage coefficients C and n with their confidence limits ; f) mention of the existence of any leaks found during the test and of their position ; g) the air permeability valve of the shutter under a pres
45、sure of 10 Pa. Page 8 EN 12835:2000 ANNEX A (normative) Pressure sequence for air permeability tests (Airtight casing) 56 2 E! e! e! 2 L n c .- c E U v1 I 3s 1 Apmax = 50 Time -b STD-BSI BS EN 12835-ENGL 2001 W lb2qbb7 0888072 811 W Pressure differences (Pa) Maximum residual airflow rates m3/h Page
46、9 EN 12835:2000 10 15 20 25 30 35 40 50 1 1,2 1,4 1,5 1,7 1,8 2 2,2 ANNEX B (normative) Testing of the rig for airtightness The airtightness of the casing shall be verified at least once a year by replacing the test specimen by an airtight panel and by following the procedure described in 7.2. The c
47、asing is considered to be airtight if the residual air flow rate remains less than i) m3/h at each pressure step for an opening of 2 m2. I l 112 Accordingly, the airflow rates shall remain less than the values given below. STD-BSI BS EN 12835-ENGL 2001 D 1b24bb9 0888073 778 m BS EN 12835:2001 BSI 38
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