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1、BRITISH STANDARD BS EN 13469:2001 Thermal insulating products for building equipment and industrial installations Determination of water vapour transmission properties of preformed pipe insulation The European Standard EN 13469:2001 has the status of a British Standard ICS 91.120.10; 91.100.60 NO CO
2、PYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13469:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy
3、Committee, was published under the authority of the Standards Policy and Strategy Committee on 09 November 2001 BSI 09 November 2001 ISBN 0 580 38621 X National foreword This British Standard is the official English language version of EN 13469:2001. This British Standard, together with BS EN 13467:
4、2001, BS EN 13468:2001, BS EN 13470:2001, BS EN 13471:2001 and BS EN 13472:2001, partially supersedes BS 2972:1989. The UK participation in its preparation was entrusted by Technical Committee RHE/9, Thermal insulating materials, to Subcommittee RHE/9/4, Nomenclature and specifications, which has th
5、e responsibility to: 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 document may be found in the BSI Standards Catalogue under the
6、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 British Standards are responsible for their correct applicat
7、ion. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related int
8、ernational and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendme
9、nts issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13469 September 2001 ICS 91.100.60 English version Thermal insulating products for buildi
10、ng equipment and industrial installations - Determination of water vapour transmission properties of preformed pipe insulation Produits isolants thermiques pour lquipement du btiment et les installations industrielles - Dtermination des proprits de transmission de la vapeur deau des coquilles isolan
11、tes prformes Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen - Bestimmung der Wasserdampfdurchlssigkeit von vorgeformten Rohrdmmstoffen This European Standard was approved by CEN on 18 August 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
12、pulate the conditions for giving this European 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 Management Centre or to any CEN member. This European Standard ex
13、ists in three official versions (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 Management Centre has the same status as the official versions. CEN members are the national standards bod
14、ies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
15、Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13469:2001 E Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 1
16、3469:2001 (E) 2 Contents page Foreword . 3 1 Scope. 4 2 Normative references. 4 3 Terms and definitions 4 4 Principle. 5 5 Apparatus 5 6 Test specimens. 5 7 Procedure 6 8 Calculation and expression of results 7 9 Accuracy of measurement. 12 10 Test report. 12 Annex A (informative) Correction for air
17、 pressure variations during test 13 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13469:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products“, the secre
18、tariat of which is held by DIN. 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 March 2002, and conflicting national standards shall be withdrawn at the latest by March 2002. This European Standar
19、d is one of a series of standards which specify test methods for determining dimensions and properties of thermal insulating materials and products. It supports a series of product standards for thermal insulating materials and products which derive from the Council Directive of 21 December 1988 on
20、the approximation of laws, regulations and administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consideration of the essential requirements. This standard contains one informative annex: Annex A - Correction for air pressure variations d
21、uring test This European Standard has been prepared for products used to insulate building equipment and industrial installations, but it may also be applied to products used in other areas. No existing European Standard is superseded. This European Standard has been prepared under a mandate given t
22、o CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
23、 Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13
24、469:2001 (E) 4 1 Scope This European Standard specifies the equipment and procedure for determining the water vapour transmission properties in the steady state under specified test conditions for test specimens of preformed pipe insulation. It is applicable to thermal insulating products. It is int
25、ended to be used for homogeneous materials (see NOTE) and for products which may have integral skins or adhered facings of some different material. NOTE A material is considered to be homogeneous in terms of mass distribution if its density is approximatively the same throughout, i.e. if the measure
26、d density values are close to its mean density. The water vapour transmission rate and permeance values are specific to the test specimen (i.e. the product) thickness tested. For homogeneous products, the water vapour permeability is a property of the material. If the pipe insulation is cut from a f
27、lat product, then the water vapour transmission properties can be obtained from tests carried out on the flat product with similar properties in accordance with EN 12086. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. Th
28、ese normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For und
29、ated references the latest edition of the publication referred to applies (including amendments). EN 12085, Thermal insulating products for building applications - Determination of linear dimensions of test specimens. EN 12086, Thermal insulating products for building applications - Determination of
30、 water vapour transmission properties. EN 13467, Thermal insulating products for building equipment and industrial installations - Determination of dimensions, squareness and linearity of preformed pipe insulation. 3 Terms and definitions For the purpose of this European Standard, the following term
31、s and definitions apply. 3.1 water vapour flow rate, G the quantity of water vapour transmitted through the surface of the test specimen in unit time 3.2 water vapour transmission rate, g the quantity of water vapour transmitted through unit area in unit time under specified conditions of temperatur
32、e, humidity and thickness 3.3 water vapour permeance, W the quotient of water vapour transmission rate of the test specimen and the water vapour pressure difference between the test specimen faces during the test 3.4 water vapour resistance, Z the inverse of water vapour permeance (1/W) Licensed Cop
33、y: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13469:2001 (E) 5 3.5 water vapour permeability, ? ? the product of the permeance and the thickness of the test specimen (? = W ? d). The water vapour permeability of a homogeneous product is a property
34、of the material. It is the quantity of water vapour transmitted per unit of time through a unit area of the product per unit of vapour pressure difference between its faces for a unit thickness 3.6 water vapour diffusion resistance factor, ? ? the quotient of the water vapour permeability of air and
35、 the water vapour permeability of the material or the homogeneous product concerned. It indicates the relative magnitude of the water vapour resistance of the product and that of an equally thick layer of stationary air at the same temperature 4 Principle A desiccant filled “dry-cup“ made from a pre
36、formed pipe insulatiom test specimen is placed in a test atmos-phere whose temperature and humidity are controlled. Because of the difference between the partial water vapour pressures in the test assembly and in the test atmosphere water vapour flows through the test specimen. Periodic weighings of
37、 the assembly are made to determine the rate of water vapour transmission when the steady state is reached. For products with a low water vapour transmission rate, special consideration has to be taken into account (see annex A). 5 Apparatus 5.1 Chamber, capable of being maintained within a temperat
38、ure of (23 1) ?C and a relative humidity (50 3) %. NOTE In order to maintain the required conditions throughout the chamber, it may be necessary to use air circulation with an air speed between 0,02 m/s to 0,3 m/s. 5.2 Desiccant, anhydrous calcium chloride (CaCl2) with particle size 2 mm to 15 mm (r
39、elative humidity 0 %) or any other desiccant that gives the same results. 5.3 Analytical balance, capable of weighing the test assembly to an accuracy of 1 mg or better. If larger test assemblies are used, the weighing accuracy may be determined with respect to the total weight and the required accu
40、racy of the test results. 5.4 Measuring instruments, capable of determining linear dimensions and thicknesses in accordance with the requirements of EN 12085 or EN 13467, whichever is relevant. 5.5 Aluminium foil, water vapour diffusion tight (at least 50 ?m thick) protected with a polymer film on t
41、he face in contact with the calcium chloride (CaCl2). 5.6 Adhesive, suitable to make water vapour tight joint between the aluminium foil and the test specimen (see relevant product standard). NOTE Any combination of foil or sealant and adhesive, which provides comparable results, may be used. 6 Test
42、 specimens 6.1. General The test specimens shall be representative of the product and shall include any natural surface skins or Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 10:06:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13469:2001 (E) 6 adhered facings of different materials. Pipe
43、 insulation pieces (half sections or segments) shall be placed together using an appropriate sealant or adhesive to form a full size pipe insulation test specimen. NOTE For faced and/or coated products with a water vapour diffusion resistance index ? ? 3, for the core material, the permeability may
44、be determined from measurements made on the facing/coating itself, after separation from the product. For pipe insulations with large dimensions test specimen of the facing and/or coating may be cut out and tested according to EN 12086. 6.2 Dimensions of the test specimen Cut the test specimens to a
45、 minimum length of (100 1) mm; for outside diameters greater than 100 mm the length shall be at least 150 mm. The cut surfaces shall be as flat as possible, equally formed and perpendicular to the vertical axis of the test specimen. The thickness of the test specimen shall be the thickness of the pr
46、oduct. 6.3 Number of test specimens The number of test specimens shall be as specified in the relevant product standard. If the number is not specified, then at least five test specimens shall be used. NOTE In the absence of a product standard or any other European technical specification the method
47、 of selection of the test specimens may be agreed between parties. 6.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (23 5) ?C. In case of dispute they shall be stored at (23 2) ?C and (50 5) % relative humidity for the time stated in the relevant product stan
48、dard. 7 Procedure Bond the test specimen to the aluminium foil (see 5.5), at one end, to achieve a water vapour tight joint. Place sufficient desiccant within the test specimen to maintain zero percent relative humidity throughout the test. The quantity of desiccant shall not be greater than 2/3 of
49、the enclosed volume. Close the open end of the test specimen as in the first paragraph. NOTE 1 Bubbles under the foil should be avoided, and the bond between the foil and the test specimen should be such that any attempt to separate the foil from the test specimen breaks the test specimen rather than the bond. In case of products with a low water vapour transmission rate, the borderline between the foil and the test specimen may be sealed in addition with a sealant (e.g. wax) in such a way that the reduction in free surfac
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