BS EN 13469-2012 Thermal insulating products for building equipment and industrial installations Determination of water vapour transmission properties of preformed pipe insulation《.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13469:2012Thermal insulating productsfor building equipment andindustrial installations Determination of water vapourtransmission properties ofpreformed pipe insulationCopy

2、right European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13469:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13469:2012. Itsupersedes BS EN

3、13469:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport

4、to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77437 9ICS 91.100.60Compliance with a British Standard cannot confer immunity fromlegal obligations.Thi

5、s British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networkin

6、g permitted without license from IHS-,-,-BS EN 13469:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13469 October 2012 ICS 91.100.60 Supersedes EN 13469:2001English Version Thermal insulating products for building equipment and industrial installations - Determination of water vapour trans

7、mission 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 isolantes prformes Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen

8、 - Bestimmung der Wasserdampfdurchlssigkeit von vorgeformten Rohrdmmstoffen This European Standard was approved by CEN on 24 August 2012. 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 nationa

9、l 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 versio

10、n 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, Cyprus, Cze

11、ch 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, Switzerland, Turkey and United Kingdom. E

12、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13469:2012: ECopyright Eu

13、ropean Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13469:2012EN 13469:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Apparatu

14、s .56 Test specimens 56.1 General 56.2 Dimensions of the test specimen .66.3 Number of test specimens 66.4 Conditioning of test specimens .67 Procedure .68 Calculation and expression of results .78.1 Water vapour flow rate 78.2 Water vapour transmission rate .88.3 Water vapour permeance 88.4 Water v

15、apour resistance .98.5 Water vapour permeability 98.6 Water vapour diffusion resistance factor 98.6.1 General 98.6.2 Calculation of air . 108.6.3 Calculation of . 118.6.4 Calculation of . 129 Accuracy of measurement . 1210 Test report . 12Bibliography . 14Copyright European Committee for Standardiza

16、tion Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13469:2012EN 13469:2012 (E) 3 Foreword This document (EN 13469:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the

17、 secretariat 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 April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is dr

18、awn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13469:2001. The following main technical changes have been implemented in

19、 this new edition of EN 13469: a) the content of Annex A “Correction for air pressure variations during test“ has been included in the main part of the standard and the annex has been deleted; b) the document has been editorially updated. This European Standard is one of a series of standards which

20、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 the approximation of laws, regulations a

21、nd administrative provisions of the Member States relating to construction products (Directive 89/106/EEC) through the consideration of the essential requirements. This European Standard has been prepared for products used to insulate building equipment and industrial installations, but it may also

22、be applied to products used in other areas. 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, Czech Republic, Denmark, Estonia, Finland, Former

23、 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. Copyright European Committee for Standardiz

24、ation Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13469:2012EN 13469:2012 (E) 4 1 Scope This European Standard specifies the equipment and procedure for determining the water vapour transmission properties in the stea

25、dy state under specified test conditions for test specimens of preformed pipe insulation. It is applicable to thermal insulating products. It is intended to be used for homogeneous materials (see NOTE) and for products which may have integral skins or adhered facings of some different material. NOTE

26、 A material is considered to be homogeneous in terms of mass distribution if its density is approximately the same throughout, i.e. if the measured 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 produc

27、t) thickness tested. For homogeneous products, the water vapour permeability is a property of the material. If the pipe insulation is cut from a flat product, then the water vapour transmission properties can be obtained from tests carried out on the flat product with similar properties in accordanc

28、e with EN 12086. 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 the referenced document (in

29、cluding any amendments) applies. 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 water vapour transmission properties EN 13467, Thermal insulating pro

30、ducts for building equipment and industrial installations Determination of dimensions, squareness and linearity of preformed pipe insulation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 water vapour flow rate G quantity of water vapour tra

31、nsmitted through the surface of the test specimen in unit time 3.2 water vapour transmission rate g quantity of water vapour transmitted through unit area in unit time under specified conditions of temperature, humidity and thickness 3.3 water vapour permeance W quotient of water vapour transmission

32、 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 inverse of water vapour permeance (1/W) Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproducti

33、on or networking permitted without license from IHS-,-,-BS EN 13469:2012EN 13469:2012 (E) 5 3.5 water vapour permeability 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 Note 1 to e

34、ntry: Water vapour permeability is a product of the permeance and the thickness of the test specimen ( = W d). It is a property of the material of a homogeneous product. 3.6 water vapour diffusion resistance factor quotient of the water vapour permeability of air and the water vapour permeability of

35、 the material or the homogeneous product concerned which 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 preformed pipe insulation test spe

36、cimen is placed in a test atmosphere 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 the assembly are made to deter

37、mine the rate of water vapour transmission when the steady state is reached. 5 Apparatus 5.1 Chamber, capable of being maintained within a temperature of (23 1) C and a relative humidity (50 3) %. In order to maintain the required conditions throughout the chamber, it may be necessary to use air cir

38、culation 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 (relative 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

39、or better. If larger test assemblies are used, the weighing accuracy may be determined with respect to the total weight and the required accuracy of the test results. 5.4 Measuring instruments, capable of determining linear dimensions and thicknesses in accordance with the requirements of EN 12085 o

40、r EN 13467, whichever is relevant. 5.5 Aluminium foil, water vapour diffusion tight (at least 50 m thick) protected with a polymer film on the 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 (

41、see relevant product standard). Any combination of foil or sealant and adhesive, which provides comparable results, may be used. 6 Test specimens 6.1 General The test specimens shall be representative of the product and shall include any natural surface skins or adhered facings of different material

42、s. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 13469:2012EN 13469:2012 (E) 6 Pipe insulation pieces (half sections or segments) shall be placed together using an approp

43、riate sealant or adhesive to form a full size pipe insulation test specimen. For faced and/or coated products with a water vapour diffusion resistance index 3, for the core material, the permeability may be determined from measurements made on the facing/coating itself, after separation from the pro

44、duct. For pipe insulations with large dimensions, test specimens 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 minimum length of (100 1) mm; for outside diameters greater than 100 mm the length shall be a

45、t 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 product. 6.3 Number of test specimens The number of test specimens shall be as specified in the

46、relevant product standard. If the number is not specified, then at least five test specimens shall be used. In addition to the specified test specimens, one test specimen, “dummy”, identical to the others but not filled with desiccant shall be prepared. This “dummy” shall be included in the test pro

47、cedure. Its weight changes during the test procedure are not caused by water vapour diffusion but by e.g. gas or humidity evaporation/absorption or air pressure variations. The weight changes of the test specimens have to be corrected by the weight changes of the dummy. NOTE Information on the use o

48、f a “dummy“ test specimen can be found in Hansen, K. K. and Lund, H.B.: “Cup Method for Determination of Water Vapour Transmission Properties of Building Materials. Sources of Uncertainty in the Method“ 2. In the absence of a product standard or any other European Technical Specification, the method 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 t