EN 12667-2001 en Thermal Performance of Building Materials and Products - Determination of Thermal Resistance by Means of Guarded Hot Plate and Heat Flow Meter Methods - Products o.pdf

1、STD.BSI BS EN 12bb7-ENGL 2001 W 1624667 0901401 b3T BRITISH STANDARD Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance The European Standard EN 12667:

2、2001 has the status of a British Standard ICs 91.100.01; 91.120.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW I BS EN 12667:2001 STD-ES1 BS EN L2bb7-ENGL 2ODL m L62Ybh 0703402 576 W BS EN 12667:2001 Amd. No. Date National foreword Comments This British Standard is the off

3、icial English language version of EN 12667:ZOOl. This British Standard together with BS EN 12664 and BS EN 12939 supersedes BS 874-2.1:1986 and BS 874-2.2:1988. The UK participation in its preparation was entrusted by Technical Committee RHE/9, Thermal insulating materials, to Subcommittee RHE/9/2,

4、Thermal properties of insulating materials, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Eur

5、opean developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained 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

6、 Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are respons

7、ible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Committee. was Summary Of pages This document comprises a front cover, an inside

8、 front cover, the EN title page, published under the authority pages 2 to 55 and a back cover. -I of the Standards Committee and comes into effect on The BSI copyright date displayed in this document indicates when the 15 March 2001 document was last issued. Amendments issued since publication O BSI

9、 03-2001 STD.BSI BS EN 12667-ENGL 2OOL 1624hb9 0901,403 402 EUROPEAN STANDARD EN 12667 NORME EUROPENNE EUROPISCHE NORM January 2001 ICs 91.100.01; 91.120.10 English version Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and

10、heat flow meter methods - Products of high and medium thermal resistance Performance thermique des matriaux et produits pour le btiment - Dtermination de la rsistance themique par la mthode de la plaque chaude garde et la mthode fluxmtrique - Produits de haute et moyenne rsistance thermique Wrmetech

11、nisches Verhalten von Baustoffen und Bauprodukten - Bestimmung des Wrmedurchlasswiderstandes nach dem Verfahren mit dem Plattengert und dem Wnnestromrnessplatten-Gert - Produkte mit hohem und mittlerem Wrmedurchlasswiderstand This European Standard was approved by CEN on 25 June 2000. CEN members ar

12、e bound to comply with the CENICENELEC 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 application to

13、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 responsibility of a CEN member into its own language and notified to the Management Centre has the same status

14、 as the oficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMInEE FOR STANDARDIZA

15、TION COMITk EUROPkEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12667:2001 E STD.BSI BS EN 12667-ENGL 2001 M 162Libb

16、9 0903404 349 Page 2 EN 12667:2001 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 3 Normative references . 5 Definitions. symbols and units 6 4 Principle 7 5 6 Apparatus 8 Test specimens 13 7 Testing procedure . 15 8 Calculations 17 9 Test report . 20 Annex A (normative) Limitations to the im

17、plementation of the measurement principle and on measurable properties . 22 Annex B (normative) Limits for equipment performance and test conditions . Guarded hot plate . 32 Annex C (normative) Limits for equipment performance and test conditions . Heat flow meter 38 Annex D (normative) Equipment de

18、sign 44 STD.BS1 BS EN L2667-ENGL 2001 m Lb24bb9 09DL405 285 W Page 3 EN 12667:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 89, Thermal performance of buildings and building components, the Secretariat of which is held by SIS. This European Standard shall be gi

19、ven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2001, and conflicting national standards shall be withdrawn at the latest by December 2001. This document is one of a series of standards on thermal test methods that support pr

20、oduct standards for building materials. The annexes A, B, C and D are normative. According to the CENICENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, Franc

21、e, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BSI 03-2001 STD-BSI BS EN L2bb7-ENGL 2OOL 3524669 070L40b LLL 6 Page 4 EN 12667:2001 Introduction Steady state heat transfer properties may be measured by a nu

22、mber of standardized test methods: the choice of the most appropriate method depends on specimen characteristics. This standard covers the guarded hot plate and the heat flow meter methods only. For routine testing, the operator of these two methods needs only this standard and the relevant product

23、standard, which may impose additional requirements related to specimen preparation or testing conditions. Detailed requirements for measurements in any testing condition of thermal resistance of any compatible plane specimen are given: - for the guarded hot plate method, in IS0 8302: 199 1 and EN 19

24、46-2: 1999; - for the heat flow meter method, in IS0 8301 : 1991 and EN 1946-3: 1999. This standard provides general information on the apparatus, all mandatory limits for the equipment design and operation, and the specification of testing procedure, for specimens, with high and medium thermal resi

25、stance, described in relevant technical specifications (e.g. a European product standard or a European technical approval). The information given is technically equivalent to that in IS0 8301:1991 and IS0 8302:1991, for both these methods. It is only intended for the routine testing of specimens (wi

26、thin the limitations of thickness and inhomogeneity, etc. given in annex A) using equipment which has been constructed according to 5.1 and which has already been validated according to EN 1946-3: 1999 or EN 1946-2: 1999. It also includes examples of equipment designs that meet the requirements of 5

27、.1, so that the assessment of the accuracy of equipment designed accordingly does not need an error analysis but only the equipment performance check. Measurements on products of medium and low thermal resistance and on moist products of any thermal resistance are covered in EN 12664. Measurements o

28、n thick products of high and medium thermal resistance are covered in EN 12939. O BSI 03-2001 STD.BSI BS EN 32667-ENGL 2001 Lb24669 0903407 058 Page 5 EN 12667:2001 i Scope This standard specifies principles and testing procedures for determining, by means of the guarded hot plate or heat flow meter

29、 methods, the themal resistance of test specimens having a thermal resistance of not less than 0,5 m2-K/W NOTE 1 The above limit is due to the effect of contact thermal resistances. An upper limit for measurable thermal resistance depends upon a number of factors described in this standard, but a un

30、ique figure cannot be assigned. It applies in principle to any mean test temperature, but the equipment design in annexD is essentially intended to operate between a minimum cooling unit temperature of -100 OC and maximum heating unit temperature of + 1 O0 OC. NOTE 2 Limits to the mean test temperat

31、ure are only imposed by the materials used in the apparatus construction and by ancillary equipment. It supplies additional limits for equipment performance and test conditions. It does not supply general equipment design procedures, equipment error analysis, equipment performance check or the asses

32、sment of equipment accuracy. It supplies example designs of equipment complying with the requirements set down in this standard. This standard does not supply general guidance and background information (e.g. the heat transfer property to be reported, product-dependent specimen preparations, procedu

33、res requiring multiple measurements, such as those to assess the effect of specimen non-homogeneities, those to test specimens whose thickness exceeds the apparatus capabilities, and those to assess the relevance of the thickness effect). Due to these limitations, this standard should be used in con

34、junction with the product standard relevant to the product to be tested. Although intended primarily for building materials, it can also be used for specimens of any material that conforms to the requirements specified. This standard does not cover measurements on moist products of any thermal resis

35、tance or measurements on thick products of high and medium thermal resistance. 2 Normative references This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are list

36、ed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred applies (including amendments). NOTE References t

37、o IS0 8301:1991 and IS0 8302:1991 do not cover the complete test methods, but are limited to such items as equipment design and performance check, not covered by European Standards or parts of them; references to IS0 8301:1991 or IS0 8302:1991 are not needed for routine testing according to this sta

38、ndard. EN 1946-2: 1999 Thermal performance of building products and components - Specijc criteria for the assessment of laboratories measuring heat transfer properties - Part 2: Measurements by guarded hot plate method Thermal performance of building products and components - Specific criteria for t

39、he assessment of laboratories measuring heat transfer properties - Part 3: Measurements by heatflow meter method EN 1946-3: 1999 O BSI 03-2001 STD.BSI BS EN 12667-ENGL 2001 I 1b24bb9 0903408 T74 Page 6 EN 12667:2001 EN 12664 Thermal performance of building materials and products - Determination of t

40、hermal resistance by means of guarded hot plate and heat flow meter methods - Dry and moist products of medium and low thermal resistance Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Thick pro

41、ducts of high and medium thermal resistance Thermal insulation - Physical quantities and definitions (IS0 7345: 1987) Thermal insulation - Determination of steady-state thermal resistance and related properties - Heat flow meter apparatus Thermal insulation - Determination of steady-state thermal re

42、sistance and related properties - Guarded hot plate apparatus EN 12939 EN IS0 7345 IS0 8301 : 1991 IS0 8302: 1991 3 Definitions, symbols and units 3.1 Terms and definitions For the purposes of this standard, the terms and definitions in EN IS0 7345 apply. Most relevant definitions for the measuremen

43、t of heat transfer properties on high and medium thermal resistance products are to be found in A.2. 3.2 Symbols and units Symbol A Ad Am R T Ti T2 TYn V C d e eh f Quantity metering area measured on a selected isothermal surface area of the defect area of the metering section thermal resistance tra

44、nsfer factor temperature of the warm surface of the specimen temperature of the cold surface of the specimen mean test temperature (usually (Ti + T2)/2) volume specific heat capacity thickness; average thickness of a specimen edge number ratio heat flow meter output voltage calibration factor of the

45、 heat flow meter Unit m2 m2 m2 m2-WW W/(m.K) K K K m3 J/(kg*K) m mV W/(mV.m2) O BSI 03-2001 STD=BSI BS EN L2bb7-ENGL 2001, 3624bb9 0903409 920 Page 7 EN 12667:2001 Symbol Quantity Unit m mass (of the specimen) 4 r thermal resistivity density of heat flow rate AR increments of thermal resistance AT t

46、emperature difference (usually Ti - T2) K Ad increments of thickness m Am relative mass change - At time interval CD heat flow rate A thermal conductivity 4 thermal transmissivity 5 porosity 5P local porosity S W W/(m.K) W/(m.K) P density kglm3 NOTE The meaning of some additional subscripts is speci

47、fied in the text. 4 Principle 4.1 Apparatus Both the guarded hot plate apparatus and the heat flow meter apparatus are intended to establish within homogeneous specimens with flat parallel faces, in the form of slabs, a unidirectional constant and uniform density of heat flow rate. The part of the a

48、pparatus where this takes place with acceptable accuracy is around its centre; the apparatus is therefore divided into a central metering section in which measurements are taken, and a surrounding guard section. 4.2 Measuring the density of heat flow rate With the establishment of steady state in th

49、e metering section, the density of heat flow rate, q, is determined from measurement of the heat flow rate, 0, and the metering area, A, that the heat flow rate crosses. 4.3 Measuring the temperature difference The temperature difference across the specimens, AT, is measured by temperature sensors fixed at the surfaces of the apparatus in contact with the specimen and/or those of the specimens themselves, where appropriate. O BSI 03-2001 STD.BSI BS EN 12667-ENGL ZOOL E 1624669 CISOL410 642 111 Page 8 EN 12667:2001 4.4 Deriving the thermal resistance or transf