1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14707:2012Thermal insulating productsfor building equipment andindustrial installations Determination of maximumservice temperature forpreformed pipe insulationBS EN 14707:
2、2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14707:2012. Itsupersedes BS EN 14707:2005+A1:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/540, Energy performance of materials components andbuildings.A
3、 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 BSI Standards
4、Limited 2013 ISBN 978 0 580 77440 9 ICS 91.100.60 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2013. Amendments issued since publicationDate T e x t
5、 a f f e c t e dBS EN 14707:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14707 October 2012 ICS 91.100.60 Supersedes EN 14707:2005+A1:2007English Version Thermal insulating products for building equipment and industrial installations - Determination of maximum service temperature for pre
6、formed pipe insulation Produits isolants thermiques pour lquipement du btiment et les installations industrielles - Dtermination de la temprature maximale de service des coquilles isolantes prformes Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen - Bestimmung der oberen Anwendungs
7、grenztemperatur 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 national standard without any alter
8、ation. 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 version in any other language made
9、 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, Czech Republic, Denmark, Estoni
10、a, 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. EUROPEAN COMMITTEE FOR STANDA
11、RDIZATION 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 14707:2012: EBS EN 14707:2012EN 14707:2012 (E) 2 Cont
12、ents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .46 Test specimens 76.1 Dimensions of test specimens .76.2 Number of test specimens 76.3 Conditioning of test specimens .87 Procedure .87.1 Test conditions 87.2 Test procedure .88 Calculation and
13、expression of results .98.1 Thickness deformation versus time 98.2 Additional tests and/or observations . 118.3 Internal self heating 119 Accuracy of measurement . 1110 Test report . 11Annex A (normative) Modifications of and additions to the general test method for mineral wool products . 13A.1 Int
14、roduction . 13A.2 Dimensions of test specimens 13A.3 Procedure 13A.3.1 Test conditions . 13A.3.2 Test procedure 13A.4 Additional tests and/or observations . 13A.5 Test for internal self-heating . 13Annex B (normative) Modifications of and additions to the general test method for polyethylene foam (P
15、EF) and flexible elastomeric foam (FEF) products. 15B.1 Introduction . 15B.2 Apparatus 15B.3 Dimensions of test specimens 15B.4 Test procedure 16B.5 Dimensional changes . 17Annex C (normative) Modifications of and additions to the general test method for phenolic foam products . 18C.1 Introduction .
16、 18C.2 Conditioning of test specimens 18C.3 Test procedure 18C.4 Additional tests and/or observations . 18Bibliography . 20BS EN 14707:2012EN 14707:2012 (E) 3 Foreword This document (EN 14707:2012) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the se
17、cretariat 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 drawn
18、 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 14707:2005+A1:2007. The main technical changes that have been made in this n
19、ew version of EN 14707 are: a) 6.1, Dimensions of test specimens has been modified; b) B.3, Dimension of test specimens has been completed. This European Standard is one of a series of European Standards which specify test methods for determining dimensions and properties of thermal insulating mater
20、ials 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 and administrative provisions of the Member States relating to construction products (Direc
21、tive 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 be applied to products used in other areas. A similar standard is available for testing of
22、 flat products: EN 14706, Thermal insulating products for building equipment and industrial installations Determination of maximum service temperature. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this Europ
23、ean 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, Slov
24、enia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14707:2012EN 14707:2012 (E) 4 1 Scope This European Standard specifies the equipment and procedures for determining the maximum service temperature for preformed pipe insulation. It is applicable to thermal insulating products. 2
25、 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 (including any amendm
26、ents) applies. EN 12429, Thermal insulating products for building applications Conditioning to moisture equilibrium under specified temperature and humidity conditions EN 13467, Thermal insulating products for building equipment and industrial installations Determination of dimensions, squareness an
27、d linearity of preformed pipe insulation EN 14706, Thermal insulating products for building equipment and industrial installations Determination of maximum service temperature 3 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 maximum service te
28、mperature highest temperature at which the insulation product, when installed a the recommended thickness in a given application, continues to function within specified limits of performance SOURCE: EN ISO 9229:2007, 2.6.9.1 Note 1 to entry: The required performance may be in the areas of dimensiona
29、l stability, thermal properties, and mechanical properties as well as changes in appearance and resistance against creation of hazards such as internal self-heating (see annexes and requirements in the relevant product standard). Note 2 to entry: In the present test procedure, which is used as a ref
30、erence, the test specimen is exposed to a temperature difference going from ambient to the maximum service temperature. This may not reflect the actual application conditions when products are exposed to different temperatures on the two main faces, e.g. in multi-layer systems or for faced products
31、where the facing may limit the maximum service temperature. 4 Principle Measure thickness and length after one sided heat treatment for a specified time period, at the maximum service temperature, achieved using a specified rate of temperature increase. The thickness of the test specimen is measured
32、 during heat treatment and the length only after cooling to ambient temperature. The procedure may be an iterative process. Additional requirements for assessing the maximum service temperature of specific materials are described in normative annexes to this European Standard or the relevant product
33、 standard or any other European Technical Specification. 5 Apparatus A general arrangement of the apparatus is indicated in Figure 1 and is comprised of: BS EN 14707:2012EN 14707:2012 (E) 5 5.1 Hot pipe, with a uniform temperature distribution in the measuring zone on the hot surface and a heat flux
34、 perpendicular to the surface of the pipe within the measuring zone (two pipes are required, with diameters that fulfil the requirements of 6.1). The hot pipe shall be linear to within 1 mm in the measuring zone at ambient temperature. The hot pipe shall be capable of being controlled to within 2 %
35、of a predetermined temperature 10 C whichever is smaller over the central 60 % of the total pipe length. The hot pipe shall be capable of being heated at 50 C/h and/or 300 C/h. 5.2 End insulation, with a gap as small as possible between end insulation and guard piece of the test specimen (e.g. 3 mm)
36、 which will permit free movement during the test of the test specimen. 5.3 Temperature sensors, (e.g. thermocouples) capable of recording the hot surface temperature of the test pipe to the nearest 1 % in centigrade but not less than 1 C, which are placed within grooves on the hot pipe. 5.4 Flexible
37、 metal foil, 3 pieces, (e.g. brass) capable of exerting a uniform pressure of 500 Pa on the upper surface of the test specimen along its testing length of (500 5) mm and the two end guards, length (250 5) mm. The pressure shall be calculated using the area: e.g. the test length of 500 mm times the d
38、iameter of the hot pipe. 5.5 Device, e.g. electromechanical for measuring the thickness of the test specimen during the test to the nearest 0,1 mm. When determining the thickness of the test specimen, the thermal movement of the apparatus (e.g. quartz rod) shall be taken into account up to the maxim
39、um service temperature. BS EN 14707:2012EN 14707:2012 (E) 6 Dimensions in millimetres Key 1 device for measuring thickness, e. g. electromechanical device 2a test length of the test specimen 2b test specimen end guard 3 end insulation 4 small gap 5 circumferential joints 6 thermocouples 7 hot pipe 8
40、 power supply and temperature control l length of the hot pipe between the end insulation a) General arrangement BS EN 14707:2012EN 14707:2012 (E) 7 Dimensions in millimetres Key 1 device for measuring thickness, e.g. electromechanical device 2 thermocouple 3 hot pipe 4 test specimen 5 flexible meta
41、l foil 6 weights for loading b) Test specimen loading arrangement Figure 1 Example of an apparatus for determining maximum service temperature 6 Test specimens 6.1 Dimensions of test specimens a) Length: The test specimen, length (1 000 10) mm, shall be cut at right angles to its length to give two
42、end guards, length each (250 5) mm, and a test length of (500 5) mm. b) Thickness: The thickness shall be 100 mm or the largest thickness below 100 mm available. c) Inside diameter: Two sizes shall be tested, in the range 22 mm to 220 mm. The dimensions shall be as specified in the relevant product
43、standard or annex to this European Standard. In the absence of a product standard or any other European Technical Specification, the dimensions may be agreed between parties. Testing may be performed on multi-layer systems to simulate the conditions existing in the application. If the pipe insulatio
44、n is cut from a homogeneous, isotropic flat product, then the maximum service temperature can be obtained from tests carried out on the flat product with similar properties in accordance with EN 14706. 6.2 Number of test specimens The number of test specimens shall be as specified in the relevant pr
45、oduct standard. If the number is not specified, then at least one test specimen for each size shall be used. BS EN 14707:2012EN 14707:2012 (E) 8 In the absence of a product standard or any other European technical specification the number of test specimens may be agreed between parties. 6.3 Conditio
46、ning 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 specified in the relevant product standard or at least 24 h. 7 Procedure 7.1 Test conditions The initial temperature
47、 of test specimen and the hot pipe shall be (23 5) C. 7.2 Test procedure Measure the length, the inside diameter and the thickness of the test specimen, l0, Di, d0, in accordance with EN 13467 to the nearest 0,5 mm. Install the test specimen (the two guards and the test length of the test specimen)
48、on the hot pipe and ensure contact on the upper part of the hot pipe between the test specimen and the hot surface. Avoid any longitudinal gaps and any gaps between the end guards and the test length of the test specimen. The installation practice shall duplicate the practice, if required in the pro
49、duct standard. In case of gaps of more than two millimetres developing between the end guards and the test length during the test, action should be taken to close the gap without disturbing the measurement. Place the two pieces of flexible metal foil over the two end guards, length (250 5) mm, and exert a pressure of 500 Pa (see 5.4). Place the third flexible metal foil, (length (500 5) mm) over the test specimen test length and exert a pr
