DIN EN 13469-2013 Thermal insulating products for building equipment and industrial installations Determination of water vapour transmission properties of preformed pipe insulation.pdf

1、January 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 91.100.60!$gP“1936845www.din.deDDIN EN 13469Thermal insulating products for building equipment and industrialinstallations Determination of water vapour transmission properties of preformedpipe insulation;English version EN 13469:2012,English translation of DIN EN 13469:2013-01Wrmedmmstoffe fr die

3、 Haustechnik und fr betriebstechnische Anlagen Bestimmung der Wasserdampfdurchlssigkeit von vorgeformten Rohrdmmstoffen;Englische Fassung EN 13469:2012,Englische bersetzung von DIN EN 13469:2013-01Produits isolants thermiques pour lquipement du btiment et les installationsindustrielles Dtermination

4、des proprits de transmission de la vapeur deau des coquilles isolantesprformes;Version anglaise EN 13469:2012,Traduction anglaise de DIN EN 13469:2013-01SupersedesDIN EN 13469:2001-12www.beuth.deDocument comprises 16 pagesIn case of doubt, the German-language original shall be considered authoritati

5、ve.12.12 DIN EN 13469:2013-01 2 A comma is used as the decimal marker. National foreword This document (EN 13469:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products” (Secretariat: DIN, Germany) The responsible German body involved in its preparation wa

6、s the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-56-69 AA Dmmstoffe fr betriebstechnische Anlagen in Gebuden und in der Industrie. Amendments This standard differs from DIN EN 13469:2001-12 as follows: a) the former Annex A has been delete

7、d and the content relating to the correction for air pressure variations during test has been moved to the main part of the standard; b) the standard has been editorially revised. Previous editions DIN EN 13469: 2001-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13469 October 2012 ICS 91.1

8、00.60 Supersedes EN 13469:2001English Version Thermal insulating products for building equipment and industrial installations - Determination of water vapour transmission properties of preformed pipe insulation Produits isolants thermiques pour lquipement du btiment et les installations industrielle

9、s - Dtermination des proprits de transmission de la vapeur deau des coquilles isolantes prformes Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen - Bestimmung der Wasserdampfdurchlssigkeit von vorgeformten Rohrdmmstoffen This European Standard was approved by CEN on 24 August 2012.

10、 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 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on

11、application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists 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 CEN-CENELE

12、C Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

13、 Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17,

14、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: EEN 13469:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Apparatus .56 Test specimens 56

15、.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 vapour resistance .98.5

16、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 . 14DIN EN 13469:2013-01 EN 13469:2012 (E) 3 Foreword This document (EN

17、 13469:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the 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 b

18、y April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn 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 pate

19、nt rights. This document supersedes EN 13469:2001. The following main technical changes have been implemented in 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 dele

20、ted; b) the document has been editorially updated. This European Standard 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

21、products which derive from the Council Directive of 21 December 1988 on 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 European Standard h

22、as been prepared for products used to insulate building equipment and industrial installations, but it may also 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 E

23、uropean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, 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, Slovakia,

24、Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13469:2013-01 EN 13469:2012 (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 spe

25、cimens 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 A material is considered to be homogeneous in terms

26、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 product) thickness tested. For homogeneous products, the wa

27、ter 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 accordance with EN 12086. 2 Normative references The following

28、 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 (including any amendments) applies. EN 12085, Thermal in

29、sulating 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 products for building equipment and industrial installat

30、ions 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 transmitted through the surface of the test specimen in

31、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 rate of the test specimen and the water vapour press

32、ure difference between the test specimen faces during the test 3.4 water vapour resistance Z inverse of water vapour permeance (1/W) DIN EN 13469:2013-01 EN 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 uni

33、t of vapour pressure difference between its faces for a unit thickness Note 1 to entry: 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 quo

34、tient of the water vapour permeability of air and the water vapour permeability of 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 Pri

35、nciple A desiccant filled “dry-cup“ made from a preformed pipe insulation test specimen 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 flo

36、ws through the test specimen. Periodic weighings of the assembly are made to determine 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

37、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 (relative humidity 0 %) or any other desiccant that gives the same results. 5.3

38、 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 accuracy of the test results. 5.4 Measuring instruments, capable of determining l

39、inear 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 the face in contact with the calcium chloride (CaCl2). 5.6 Adhesive, suitable t

40、o make water vapour tight joint between the aluminium foil and the test specimen (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 an

41、d shall include any natural surface skins or adhered facings of different materials. DIN EN 13469:2013-01 EN 13469:2012 (E) 6 Pipe 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. For fa

42、ced 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 product. For pipe insulations with large dimensions, test specimens of the facing and/

43、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 at least 150 mm. The cut surfaces shall be as flat as possible, equally formed and p

44、erpendicular 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 relevant product standard. If the number is not specified, then at least five test

45、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 procedure. Its weight changes during the test procedure are not caused by water vapour

46、 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 of a “dummy“ test specimen can be found in Hansen, K. K. and Lund, H.B.: “Cup Method

47、 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

48、 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 standard. 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 humidit