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1、BRITISH STANDARD BS EN ISO 13787:2003 Thermal insulation products for building equipment and industrial installations Determination of declared thermal conductivity The European Standard EN ISO 13787:2003 has the status of a British Standard ICS 91.100.60 ? Licensed Copy: sheffieldun sheffieldun, na
2、, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 13787:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2003 BSI 28 April 2003 ISBN 0 580 41638 0 National foreword This British Standard is the official E
3、nglish language version of EN ISO 13787:2003. It is identical with ISO 13787:2003. The UK participation in its preparation was entrusted to Technical Committee RHE/9, Thermal insulating materials, which has the responsibility to: A list of organizations represented on this committee can be obtained
4、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 Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of th
5、e BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enq
6、uirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This do
7、cument comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 22, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy:
8、sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13787 April 2003 ICS 91.100.60 English version Thermal insulation products for building equipment and industrial installations - Determination of decla
9、red thermal conductivity (ISO 13787:2003) Produits isolants thermiques pour lquipement du btiment et les installations industrielles - Dtermination de la conductivit thermique dclare (ISO 13787:2003) Wrmedmmstoffe fr die Haustechnik und fr betriebstechnische Anlagen - Bestimmung des Nennwertes der W
10、armeleitfhigkeit (ISO 13787:2003) This European Standard was approved by CEN on 9 October 2002. 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-d
11、ate 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 exists in three official versions (English, French, German). A version in any other language made by translation under the
12、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 bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lux
13、embourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in an
14、y form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13787:2003 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 13787:2003 (E) 2 Contents page Foreword3 Introduction.4 1Scope4 2Normative references4 3
15、Terms and definitions .5 4Principles for the determination of declared thermal conductivity5 5Determination and verification of declared thermal conductivity6 5.1 Measurement of thermal conductivity 6 5.2 Procedure for verification .6 Annex A (informative) Verification based on curve comparison9 A.1
16、General9 A.2Principle9 A.3Test9 A.3.1Measurement of thermal conductivity 9 A.3.2Procedure for comparison and decision9 Annex B (informative) Statistical method to establish the declared thermal conductivity curve.11 B.1General11 B.2Symbols and units .11 B.3Establishment of declared values12 B.3.1A l
17、arge number of thermal conductivity results are available (n 50 at each temperature) 12 B.3.2A small number of data are available (n 50) 12 B.4Verification of the declared curve 12 B.5 Examples13 B.5.1Establishment of the declared curve.13 B.5.2Verification of the declared curve15 Annex C (informati
18、ve) Illustration of the procedure to verify thermal conductivity.19 Bibliography22 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 13787:2003 (E) 3 Foreword This document (EN ISO 13787:2003) has been prepared by Technical Committee CE
19、N/TC 89 “Thermal performance of buildings and building components“, the secretariat of which is held by SIS, in collaboration with Technical Committee ISO/TC 163 “Thermal performance and energy use in the built environment“. This European Standard shall be given the status of a national standard, ei
20、ther by publication of an identical text or by endorsement, at the latest by September 2003, and conflicting national standards shall be withdrawn at the latest by September 2003. Annexes A, B and C are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizati
21、ons of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
22、Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 13787:2003 (E) 4 Introduction This standard gives the procedure for the determination of the declared thermal conductivity of thermal insulation materials and products, which are used fo
23、r the insulation of building equipment and industrial installations. For this area of application the thermal conductivity values are usually expressed over a wide range of temperatures. This standard describes the procedure necessary for the determination of the thermal conductivity values, which t
24、he manufacturer shall declare. The values are expressed in the form of a curve or in tabular form which shows thermal conductivity as a function of temperature. 1 Scope This standard establishes the procedure for the determination and verification of the declared thermal conductivity as a function o
25、f temperature of thermal insulating materials and products used for the insulation of building equipment and industrial installations. The informative annex B also gives an optional method for establishing the thermal conductivity curve or table from measured values. The standard is not applicable t
26、o thermal insulating products used in building envelopes. For the procedures which are used for these products, see ISO 10456, “Building materials and products Procedures for determining declared and design thermal values”. 2 Normative references This European Standard incorporates by dated or undat
27、ed reference, provisions from other publications. These 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
28、incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 12667Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter
29、 methods - Products of high and medium thermal resistance. EN ISO 7345:1995Thermal insulation - Physical quantities and definitions (ISO 7345:1987). EN ISO 8497Thermal insulation - Determination of steady-state thermal transmission properties of thermal insulation for circular pipes (ISO 8497:1994).
30、 prEN ISO 9229:1997 Thermal insulation - Definitions of terms (ISO/DIS 9229:1997). ISO 8301Thermal insulation - Determination of steady-state thermal resistance and related properties - Heat flow meter apparatus. ISO 8302Thermal insulation - Determination of steady-state thermal resistance and relat
31、ed properties - Guarded hot plate apparatus. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 13787:2003 (E) 5 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN ISO 7345:1995, prE
32、N ISO 9229:1997 and the following apply. 3.1 reference mean temperature mean temperature selected for use as the basis for physical property measurement and expression of data for those materials where physical properties change with temperature 3.2 declared value value declared by a manufacturer wh
33、ich is derived from measured values under specified conditions and rules 3.3 declared thermal value expected value of a thermal property of a building material or product assessed from measured data at reference conditions of temperature and humidity; given for a stated fraction and confidence level
34、 according to the determination method in this standard; corresponding to a reasonable expected service lifetime under normal conditions. NOTEThe declared thermal value includes the effects of ageing and dispersion in the measured values. 3.4 declared thermal conductivity curve curve giving the ther
35、mal conductivity at different temperatures for a material or product conditioned in equilibrium with a standard atmosphere (23 C, 50 % relative humidity) based on the declared thermal values 4Principles for the determination of declared thermal conductivity The manufacturer shall present his propose
36、d declared thermal conductivity of the material or product in the form of a curve as a function of the mean temperature or a table with a number of values in accordance with 5.1. The product shall then be subjected to a test according to clause 5, with test specimens representative of the product. I
37、f the test is passed, the proposed declared thermal conductivity curve or table becomes the declared thermal conductivity curve or table. NOTE 1 An alternative procedure to the one given in the standard is given in annex A. NOTE 2 An optional statistical method to establish the declared thermal cond
38、uctivity curve is given in annex B. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 13787:2003 (E) 6 5Determination and verification of declared thermal conductivity 5.1 Measurement of thermal conductivity The test specimens shall be
39、aged, if necessary, before measurements are made. As an alternative, a correction factor for ageing shall be applied. NOTEAgeing procedures are found in product specifications, where relevant. Measurements shall be carried out in accordance with ISO 8301, ISO 8302 or EN 12667 for flat test specimens
40、 and EN ISO 8497 for cylindrical test specimens. The temperature difference between the hot and cold faces shall range from 10 K to 40 K for flat test specimens. The temperature difference shall be chosen to maximize the accuracy of the measurement. For cylindrical specimens, tested in accordance wi
41、th EN ISO 8497, these requirements on temperature difference do not apply, but the temperature difference shall not be smaller than 10 K. Measurements shall be made at three different mean temperatures at least. For mean temperatures up to 500 C, the curve determined in the test shall be based upon
42、measurements at intervals of a maximum of 100 K, over the whole service temperature range stated by the manufacturer. Thermal conductivity shall also be measured at temperatures close to inflexion points or other irregularities of the curve. For mean temperatures greater than 500 C, the curve determ
43、ined in the test shall be based upon measurements at intervals of a maximum of 200 K. No extrapolation of test results beyond the measured temperature range is permitted. The measured thermal conductivities shall be rounded up to the nearest 0,001 W/(mK). The results shall be expressed either by a t
44、emperature/thermal conductivity curve or by a table. The comparison with the proposed curve or table is only made at the temperatures of measurement. 5.2 Procedure for verification Select three different samples. Take the test specimens from these samples at random, as required. Measure the thermal
45、conductivity of the test specimen from the first sample in accordance with the method described in 5.1. Compare the results of the measurements with the values obtained from the proposed curve or table. If the measured values are all less than or equal to the thermal conductivities derived from the
46、proposed curve or table, the test is passed and the proposed curve or table becomes the declared curve or table. If one or more of the measured values exceeds the corresponding thermal conductivity of the proposed curve or table by 10 % or more, the test has failed. If there are measured values abov
47、e the values on the proposed curve or in the table but none of them exceeds the corresponding thermal conductivity by 10 %, then two new test specimens shall be measured in accordance with the method described in 5.1, one specimen being taken from each of the two remaining samples. For temperatures
48、below 100 C, measure the thermal conductivities of the second and third specimen at temperatures within 5 K of the values measured for the first specimen. Increase this to 10 K for temperatures above 100 C. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 03:11:48 GMT+00:00 2006, Uncontrolled
49、Copy, (c) BSI EN ISO 13787:2003 (E) 7 If none of the new measurements exceeds the proposed curve or table by 10 % or more, the measured thermal conductivities shall be converted to the temperatures at which the measurements for the first curve were made, using the slope of the first curve to make the conversion. Results of the measurements above the proposed curve or the value in the table by 10% or more shall constitute a failure of the test. Calculate the values of