BS EN 12524-2000 Building materials and products - Hygrothermal properties - Tabulated design values《建筑材料和产品 湿温特性 列表设计值》.pdf

1、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12524:2000 The Euro

2、pean Standard EN 12524:2000 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 Building materials and products Hygrothermal properties Tabulated design valuesThis British Standard, having been prepared under the direct

3、ion of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 July 2000 BSI 07-2000 ISBN 0 580 34797 4 BS EN 12524:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British

4、 Standard is the official English language version of EN 12524:2000. The UK participation in its preparation was entrusted by Technical Committee B/540, Energy performance of materials, components and buildings, to Subcommittee B/540/1, European standards for thermal insulation, which has the respon

5、sibility 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 European developments and promulgate them in the UK. A list of organiza

6、tions 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 Standards Catalogue under the section entitled “International Standar

7、ds 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 responsible for their correct application. Compliance with a British Standard

8、 does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last

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12、VLRQV &(1PHPEHUVDUHWKHQDWLRQDOVWDQGDUGVERGLHVRI$XVWULD%HOJLXP&HFK5HSXEOLFHQPDUN)LQODQG)UDQFH*HUPDQ*UHHFH ,FHODQG,UHODQG,WDO/XHPERXUJ1HWKHUODQGV1RUZD3RUWXJDO6SDLQ6ZHGHQ6ZLWHUODQGDQG8QLWHG.LQJGRP (8523($1 &200,77( )25 67$1$5,=$7,21 &20,7e(8523e(1(1250$/,6$7,21 (8523b,6&+(6.20,7()h5125081* &HQWUDO6HFUH

13、WDULDWUXHGH6WDVVDUW%UXVVHOV &(1 $OOULJKWVRIHSORLWDWLRQLQDQIRUPDQGEDQPHDQVUHVHUYHG ZRUOGZLGHIRU&(1QDWLRQDO0HPEHUV 5HI1R(1(3DJH (1 %6, ContentsPage Foreword 2 1 Scope 2 2 Normative references 2 3 Definitions, symbols and units 3 4 Design thermal values 3 Bibliography 10 Foreword This European Standard

14、 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 given the status of a national standard, either by publication of an identical text or by endorsement, at the latest

15、 by October 2000, and conflicting national standards shall be withdrawn at the latest by December 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic,

16、Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is one of a series of standards for the evaluation of the thermal performance of building materials and products. 1 Scope Th

17、is standard gives design data in tabular form for heat and moisture transfer calculations, for thermally homogeneous materials and products commonly used in building construction. It also gives data to enable the calculation and conversion of design thermal values for various environmental condition

18、s. 2 Normative references This European 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 listed hereafter. For dated references, subsequent amendments to or rev

19、isions of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN ISO 7345, Thermal insulation Physical quantities and definitions (ISO 7345:1987).3DJH (1 %6, EN ISO

20、 9346, Thermal insulation Mass transfer Physical quantities and definitions (ISO 9346:1987). EN ISO 10456, Thermal insulation Building materials and products Determination of declared and design thermal values (ISO 10456:1999). 3 Definitions, symbols and units 3.1 Definitions For the purposes of thi

21、s standard, the terms and definitions given in EN ISO 7345, EN ISO 9346 and the following apply. 3.1.1 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 frac

22、tion and confidence level corresponding to a reasonable expected service lifetime under normal conditions EN ISO 10456 3.1.2 design thermal value value of thermal property of a building material or product under specific external and internal conditions which may be considered as typical of the perf

23、ormance of that material or product when incorporated in a building component EN ISO 10456 3.2 Symbols and units Symbol Quantity Unit c p specific heat capacity at constant pressure J/(kgK) f u moisture conversion coefficient, mass by mass 1 kg/kg f y moisture conversion coefficient, volume by volum

24、e 2 m 3 /m 3 s d water vapour diffusionequivalent air layer thickness m u moisture content, mass by mass 2kg/kg l thermal conductivity W/(mK) r density kg/m 3 y moisture content, volume by volume 3 m 3 /m 3 m ZDWHUYDSRXUUHVLVWDQFHIDFWRU 4 Design thermal values 4.1 General Design thermal values for b

25、uilding materials are used in heat and moisture transfer calculations. )RUFRQYHUVLRQRIWKHUPDOSURSHUWLHV 0DVVRIHYDSRUDEOHZDWHUGLYLGHGEGUPDVVRIPDWHULDO 9ROXPHRIHYDSRUDEOHZDWHUGLYLGHGEGUYROXPHRIPDWHULDO3DJH (1 %6, Design thermal values can be derived from declared thermal values by applying the convers

26、ion procedures in EN ISO 10456. This is normally the case for thermal insulation materials. The method of determination of the declared thermal value for an insulation material is specified in product standards. Design thermal values for masonry materials are usually derived from the thermal conduct

27、ivity in the dry state using EN ISO 10456. NOTE The thermal conductivity in the dry state for masonry materials is given in prEN 1745:1994, Masonry and masonry products Methods for determining design thermal values. 4.2 Tabulated design thermal values Table 1 gives design thermal values for material

28、s in general in building applications. When appropriate, linear interpolation may be used. For insulation materials and masonry materials, Table 2 gives the moisture content of materials and products in equilibrium with air at 23 C and relative humidities of 50 % and 80 %, and moisture conversion co

29、efficients taken from EN ISO 10456. Table 2 also gives the water vapour resistance factor and specific heat capacity for these materials. Table 3 gives the water vapour diffusionequivalent air layer thickness for thin layers.3DJH (1 %6, 7DEOHHVLJQWKHUPDOYDOXHVIRUPDWHULDOVLQJHQHUDOLQEXLOGLQJDSSOLFDWL

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37、 computational purposes the value may have to be replaced with an arbitrarily large value, e.g. 10 6 . NOTE 2 Water vapour resistance factors are given as dry cup and wet cup values, see prEN ISO 12572:1999, Hygrothermal performance of building materials and products Determination of water vapour transmission properties. (a) The density for concrete is the dry density. (b) The thermal conductivity incl