EN 13472-2012 en Thermal insulating products for building equipment and industrial installations - Determination of short term water absorption by partial immersion of preformed pi.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13472:2012Thermal insulating productsfor building equipment andindustrial installations Determination of short termwater absorption by partialimmersion of preformed pipeins

2、ulationBS EN 13472:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13472:2012. Itsupersedes BS EN 13472:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components and

3、buildings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BS

4、I StandardsLimited 2013ISBN 978 0 580 77438 6ICS 91.100.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate T

5、ext affectedBS EN 13472:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13472 October 2012 ICS 91.100.60 Supersedes EN 13472:2001English Version Thermal insulating products for building equipment and industrial installations - Determination of short term water absorption by partial immersio

6、n of preformed pipe insulation Produits isolants thermiques pour lquipement du btiment et les installations industrielles - Dtermination de labsorption deau court terme par immersion partielle des coquilles isolantes prformes Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen - Besti

7、mmung der Wasseraufnahme bei kurzzeitigem teilweisem Eintauchen 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

8、 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, Frenc

9、h, 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria,

10、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, Slovenia, Spain, Sweden, Switzerland, Turkey a

11、nd United Kingdom. EUROPEAN 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 13472

12、:2012: EBS EN 13472:2012EN 13472:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .46 Test specimens 66.1 Dimensions of test specimens .66.2 Preparation of test specimens .66.3 Number of test specimens 66.4 Conditioning of test sp

13、ecimens .77 Procedure .77.1 Test conditions 77.2 Test procedure .77.2.1 General 77.2.2 Method A (drainage) 77.2.3 Method B (deduction of initial water uptake) 78 Calculation and expression of results .89 Accuracy of measurement 910 Test report 9Annex A (informative) Table with examples of calculatio

14、n of the length of test specimens . 10Bibliography . 13Tables Table A.1 Examples of calculation of the length of test specimens 10BS EN 13472:2012EN 13472:2012 (E) 3 Foreword This document (EN 13472:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”,

15、 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 by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention i

16、s 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 patent rights. This document supersedes EN 13472:2001. The following main technical changes have been done on th

17、is new edition of EN 13472: a) Figure 1 has been corrected; b) Subclause 5.3, Tap water has been supplemented. 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. This Euro

18、pean 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 products which derive from the Council Directive of 21 Decem

19、ber 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. According to the CEN/CENELEC Internal Regulations, the national standards organisati

20、ons of the following countries are bound to implement this European 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

21、, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13472:2012EN 13472:2012 (E) 4 1 Scope This European Standard specifies the equipment and procedures for determining the short term water absorption of preformed pipe

22、 insulation by partial immersion in water. It is applicable to thermal insulating products. NOTE It is intended to simulate the water absorption caused by exposure to rain for 24 h during product installation. If the pipe insulation is cut from a flat product, then the short term water absorption by

23、 partial immersion can be obtained from tests carried out on the flat product with similar properties in accordance with EN 1609, providing the test is carried out in the direction giving the highest water uptake. 2 Normative references The following documents, in whole or in part, are normatively r

24、eferenced 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 13467, Thermal insulating products for building equipment and indus

25、trial installations Determination of dimensions, squareness and linearity of preformed pipe insulation 3 Terms and definitions This European Standard contains no terms and definitions. 4 Principle The short term water absorption by partial immersion is determined by measuring the change in mass of a

26、 test specimen, the lower part of which is in contact with water for a period of 24 h. The excess water adhering to the surface and not absorbed by the test specimen is drained off in method A, or calculated in method B, from the initial water uptake. 5 Apparatus 5.1 Balance capable of determining t

27、he mass of a test specimen to an accuracy of 0,1 g or 0,5 %, whichever is less. 5.2 Water tank with a device for keeping the water level constant to within 2 mm, and a device to keep the test specimen in the required position during the test (see examples in Figures 1a) and 1b). The supporting devic

28、e shall be such that the test specimen contact area with water shall be at least 85 % and such that the original form of the test specimen is maintained. 5.3 Tap water adjusted to a temperature of (23 5) C. In case of dispute, deionised water shall be used. 5.4 Equipment for drainage (see examples i

29、n Figures 2a) and 2b). BS EN 13472:2012EN 13472:2012 (E) 5 Dimensions in millimetres a) Example for D0 300 mm b) Example for D0 300 mm Key 1 water tank 2 load to keep the test specimen in position 3 stainless steel mesh 4 test specimen Figure 1 Examples of partial immersion test devices BS EN 13472:

30、2012EN 13472:2012 (E) 6 a) b)Key 1 stainless steel mesh 2 test specimen 3 perforated stainless steel Figure 2 Examples of equipment for drainage 6 Test specimens 6.1 Dimensions of test specimens Test specimens shall be prepared from the product without reducing the original thickness. In the event t

31、hat the outside diameter of the product is 300 mm, the test specimen shall have one face with an area equal to the full cross sectional area of the product or half the original cross sectional area. For products with outside diameters 300 mm, the face shall be a segment of the cross section with an

32、outside chord length of (300 10) mm. The length of the test specimen shall be adjusted so that the area of the immersed cylindrical surface will be (40 000 400) mm. 6.2 Preparation of test specimens The test specimens shall be cut so that they do not include product ends. The test specimens shall be

33、 prepared by methods that do not change the original structure of the product. Any skins, facings and/or coatings shall be retained. NOTE Special methods of preparation, when needed, are specified in the relevant product standard. For products with a thickness 25 mm, the ends shall be closed to avoi

34、d water pickup on the inner main surface of the test specimen (e.g. by use of glued aluminium foil on the ends). 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 three test specimens shall

35、be used. In the absence of a product standard or any other European Technical Specification, the number of test specimens may be agreed between parties. BS EN 13472:2012EN 13472:2012 (E) 7 6.4 Conditioning of test specimens The test specimens shall be stored for at least 6 h at (23 5) C. In case of

36、dispute, they shall be stored at (23 2) C and (50 5) % relative humidity for the time specified in the relevant product standard. 7 Procedure 7.1 Test conditions The test shall be carried out at (23 5) C. In case of dispute it shall be carried out at (23 2) C and (50 5) % relative humidity. 7.2 Test

37、 procedure 7.2.1 General The choice of the method A or B shall be as specified in the relevant product standard. In the absence of a product standard or any other European Technical Specification, the method A or B may be agreed between parties. The dimensions of the test specimens shall be measured

38、 in accordance with EN 13467. 7.2.2 Method A (drainage) Weigh the test specimen to the nearest 0,1 g or 0,5 %, whichever is less, to determine its initial mass m0. Place the test specimen with the outside surface downwards in the empty water tank and apply a sufficient load to keep the test specimen

39、 partially immersed when water is added. Carefully adjust the water added to the tank until the lowest point of the outside face of the test specimen is (20 2) mm below the surface of the water (see examples in Figures 1a) and 1b). Ensure that the water level remains constant during the test. Remove

40、 the test specimen after 24 h and drain it for (10 0,5) min by placing it supported on the exterior surface on a mesh, inclined at 45, as shown in Figure 2a) or 2b). Weigh the test specimen again to determine the mass m24. 7.2.3 Method B (deduction of initial water uptake) Weigh the test specimen to

41、 the nearest 0,1 g or 0,5 %, whichever is less, to determine its initial mass m0. Place the test specimen with the outside surface downwards in the water tank in such position that it is partially immersed in water with the lowest point of the outside face of the test specimen (20 2) mm below the wa

42、ter level. Remove the test specimen after 10 s holding it horizontally and place it within 5 s in a plastic tray of known mass. Reweigh this tray with the test specimen to determine the mass of the test specimen including the initial water uptake m1. Replace the test specimen in the water tank in th

43、e same position and apply a sufficient load to keep the test specimen partially immersed in water, with the lowest point of the outside face of the test specimen (20 2) mm below the water level (see examples in Figures 1a) and 1b). Ensure that the water level remains constant during the test. Remove

44、 the test specimen after 24 h, holding it horizontally and place it within 5 s in the plastic tray of known mass to determine the mass m24. Method B is only applicable if the initial water uptake is: BS EN 13472:2012EN 13472:2012 (E) 8 2p01kg/m5,0Amm(1) where 1mis the mass of the test specimen inclu

45、ding the initial water uptake in method B, in kilograms; 0m is the initial mass of the test specimen as determined in method B, in kilograms; pA is the immersed cylindrical surface area of the test specimen, in square metres. 8 Calculation and expression of results The test result shall be the mean

46、value of the individual values. NOTE Results obtained with test specimens of different outside diameters and thicknesses might not be comparable. Calculate the short term water absorption by partial immersion, Wp, in kilograms per square metre using the following formulae: Method A (drainage) p024pA

47、mmW= (2) Method B (deduction of initial water uptake) p124pAmmW= (3) The calculation of pA , necessary for both method A and B, is as follows: (4) where 0D is the outside diameter, in metres; l is the length of the test specimen, in metres; 0m is the initial mass of the test specimen as determined i

48、n method A, in kilograms; 1m is the mass of the test specimen including the initial water uptake in method B, in kilograms; 24m is the mass of the test specimen after partial immersion for 24 h (method A and B), in kilograms; pA is the immersed cylindrical surface area of the test specimen, in squar

49、e metres. The calculated arc cos angle shall be in radians (not in degrees). l D DDA =000p2 02, 0 2 arccos BS EN 13472:2012EN 13472:2012 (E) 9 pWshall be rounded to the nearest 0,01 kg/m2. 9 Accuracy of measurement NOTE It has not been possible to include a statement on the accuracy of the method in this edition of the standard, but it is intended to include such a statement when the standard is next revised. 10 Test report The test report shall