《BS-EN-12412-2-2003.pdf》由会员分享，可在线阅读，更多相关《BS-EN-12412-2-2003.pdf（46页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 12412-2:2003 Thermal performance of windows, doors and shutters Determination of thermal transmittance by hot box method Part 2: Frames The European Standard EN 12412-2:2003 has the status of a British Standard ICS 91.060.50 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oc
2、t 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12412-2:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 20 August 2003 BSI 20 August 2003 ISBN 0 580 42481 2 National foreword This British Standard is the official English
3、language version of EN 12412-2:2003. 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 responsibility to: A list of organizat
4、ions 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 Catalogue under the section entitled “International Standards Correspo
5、ndence Index”, or by using the “Search” facility of the 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
6、itself confer immunity from legal obligations. aid enquirers 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 a
7、nd promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 42, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sin
8、ce publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12412-2 July 2003 ICS 91.060.50 English version Thermal performance of windows, doors and shutters - De
9、termination of thermal transmittance by hot box method - Part 2: Frames Performance thermique des fentres, portes et fermetures - Dtermination du coefficient de transmission thermique par la mthode de la bote chaude - Partie 2: Encadrements Wrmetechnisches Verhalten von Fenstern, Tren und Abschlssen
10、 - Bestimmung des Wrmedurchgangskoeffizienten mittels des Heizkastenverfahrens - Teil 2: Rahmen This European Standard was approved by CEN on 2 May 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
11、tus 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A ve
12、rsion 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 as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, Fran
13、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, 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, 3
14、6 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12412-2:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 2 Contents Foreword
15、 .3 Introduction.4 1Scope4 2Normative references4 3Terms, definitions, symbols, units and subscripts .5 4Principle .6 5Requirements for test specimen and apparatus6 5.1General .6 5.2Surround panels6 5.3Specimen requirements and location .6 5.3.1Complete frames for windows and doors.6 5.3.2Frame and
16、sash, transom or mullion profile sections.9 5.4Calibration panels .11 5.5Temperature measurement and baffle positions.11 6Test procedure.13 6.1General .13 6.2Calibration measurements .13 6.2.1General .13 6.2.2Total surface resistance .14 6.2.3Surface resistances and surface coefficients of heat tran
17、sfer.15 6.2.4Surround panel and edge effects 16 6.3Measurement procedure for test specimens17 7Test report19 Annex A (normative) Determination of environmental temperature .21 A.1General .21 A.2Environmental temperature22 A.3Mean radiant temperature 22 A.4Convective surface heat transfer coefficient
18、 .23 Annex B (normative) Linear thermal transmittance of the edge zone 25 Annex C (informative) Example of calibration test and measurement of frame specimen.32 C.1Calibration test with panel size 1,23 m 1,48 m 32 C.2Frame specimen measurement38 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28
19、 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 3 Foreword This document EN 12412-2:2003 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 g
20、iven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2004, and conflicting national standards shall be withdrawn at the latest by January 2004. This standard is one of a series of standards on calculation and measurement metho
21、ds for the design and evaluation of the thermal performance of buildings and building components. Annexes A and B are normative. Annex C is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Euro
22、pean 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. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57
23、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 4 Introduction The method given in this European Standard provides data on frames that can be used in calculations of the overall thermal performance of windows and doors according to EN ISO 10077-1, Thermal performance of windows, door
24、s and shutters Calculation of thermal transmittance Part 1: Simplified method (ISO 10077-1). 1 Scope This European Standard specifies a method, based on EN ISO 8990 and EN ISO 12567-1, to measure the thermal transmittance of frame and sash components of windows and doors, including mullions and tran
25、soms. The thermal bridging effect of window or door components (handles, hinges, closing devices, etc.) is included. The test procedure is designed to take into account the whole developed area of the frame or sash surface, but excludes the influence of the thermal bridge introduced through the spac
26、er in sealed glazing units. Edge effects occurring outside of the perimeter of the specimen are excluded. Furthermore, energy transfer due to solar radiation is not taken into account, and air leakage is excluded. The measurements are performed under defined conditions to facilitate the comparison o
27、f measured values. Information on the design of the calibration transfer standard is given in EN ISO 12567-1. 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 i
28、n 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 incorporated in it by amendment or revision. For undated references the latest edition of the publication referred
29、 to applies (including amendments). EN 1946-4, Thermal performance of building products and components Specific criteria for the assessment of laboratories measuring heat transfer properties Part 4: Measurements by hot box methods. prEN 12519:1996:, Windows and doors Terminology. EN 12664, Thermal p
30、erformance of building materials and products Determination of thermal resistance by means of guarded hot plate and heat flow meter methods Dry and moist products of medium and low thermal resistance. EN ISO 7345:1995, Thermal insulation Physical quantities and definitions (ISO 7345:1987). EN ISO 89
31、90:1996, Thermal insulation Determination of steady-state thermal transmission properties Calibrated and guarded hot box (ISO 8990:1994). EN ISO 9288:1996, Thermal insulation Heat transfer by radiation Physical quantities and definitions (ISO 9288:1989). EN ISO 12567-1:2000, Thermal performance of w
32、indows and doors Determination of thermal transmittance by hot box method - Part 1: Complete windows and doors (ISO 12567-1:2000). Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 5 3 Terms, definitions, symbols, units and
33、 subscripts 3.1 Terms and definitions For the purposes of this European Standard, the terms and definitions given in prEN 12519:1996, EN ISO 7345:1995, EN ISO 8990:1996 and EN ISO 9288:1996 apply. 3.2 Symbols and units SymbolQuantityUnit Aaream2 dthickness or depthm Ffraction fview factor Hheightm h
34、surface coefficient of heat transferW/(m2K) Lperimeter lengthm llengthm qdensity of heat flow rateW/m2 Rthermal resistance m2K/W Tthermodynamic temperatureK T, temperature differenceK Uthermal transmittance W/(m2K) vair velocitym/s wwidthm radiation factor hemispherical emissivity Celsius temperatur
35、eC thermal conductanceW/(m2K) thermal conductivityW/(mK) Stefan-Boltzmann constantW/(m2K4) heat flow rateW linear thermal transmittanceW/(mK) 3.3 Subscripts bbaffle cconvection (air) cacalibration eexternal, usually cold side ededge zone fframe fiinfill with known thermal properties Licensed Copy: s
36、heffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 6 hbhot box iinternal, usually warm side ininput mmeasured meaverage/mean nenvironmental (ambient) neenvironmental (ambient external) nienvironmental (ambient internal) preveal of surround
37、panel rradiation (mean) ssurface spspecimen sursurround panel ttotal 4 Principle The thermal transmittance of a frame is determined directly by measurement under standardised conditions using the calibrated or guarded hot box method according to EN ISO 8990 and EN ISO 12567-1. The requirements of EN
38、 ISO 8990 shall be complied with in addition to those given in this standard. The method may be applied to complete window or door frames (see 5.3.1) or to profile sections including mullions, transoms etc. (see 5.3.2). The surround panel is used to keep the specimen in a given position. It is const
39、ructed with outer dimensions of appropriate size for the apparatus, having an aperture to accommodate the specimen (see Figures 1 to 5). The principal heat flows through the surround panel and the calibration panel (or test specimen) are shown in Figure 8. The boundary edge heat flow due to the loca
40、tion of the calibration panel in the surround panel is determined separately as a linear thermal transmittance, . The procedure in this standard includes a correction for the boundary edge heat flow, so that standardized and reproducible thermal transmittance properties are obtained. The magnitude o
41、f the boundary edge heat flow as a function of geometry, calibration panel thickness and thermal conductivity is determined by tabulated values given EN ISO 12567-1:2000, annex B. 5 Requirements for test specimen and apparatus 5.1 General The test apparatus shall conform to the requirements specifie
42、d in EN 1946-4, EN ISO 8990 and EN ISO 12567-1. 5.2 Surround panels For details see EN ISO 12567-1:2000, 5.2. 5.3 Specimen requirements and location 5.3.1 Complete frames for windows and doors Specimen sizes should be representative (typical) of those found in practice. For standardised tests on win
43、dow frames the overall sizes recommended are 1230 mm (width) by 1480 mm (height). Further requirements are laid down in EN ISO 12567-1:2000, 5.3. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 7 To ensure consistency of
44、measurement, the specimen shall be located as follows. The specimen with panel shall fill the surround panel aperture, which shall be located centrally. The internal frame face shall be as close to the face of the surround panel as possible, but no part shall project beyond the surround panel faces
45、on either the cold or warm sides (see Figures 1, 2 and 3). Dimensions in millimetres Key 1Infill element of insulating material 2Adhesive tape 3Aperture 4Warm side 5Cold side Figure 1 Mounting of specimen in the aperture Metal frame Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GMT
46、+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 8 Dimensions in millimetres Key 1Infill element of insulating material 2Adhesive tape 3Aperture 4Warm side 5Cold side Figure 2 Mounting of specimen in the aperture PVC frame Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:31:57 GM
47、T+00:00 2006, Uncontrolled Copy, (c) BSI EN 12412-2:2003 (E) 9 Dimensions in millimetres Key 1Infill element of insulating material 2Adhesive tape 3Aperture 4Warm side 5Cold side Figure 3 Mounting of the specimen in the aperture Wood frame The aperture should be at least 200 mm from the inside surfa
48、ces of the cold and hot boxes to avoid or limit edge heat flow corrections, and to allow room for the guarded hot box (where applicable). Any glazing or opaque infill panels in windows and doors shall be replaced by insulating panels (see Figures 1, 2 and 3). Thermocouples to measure the surface tem
49、perature on the infill insulation shall be placed as shown in Figure 6. All surround panel thermocouples should be located centrally (see Figure 6). For further information see EN ISO 12567-1. 5.3.2 Frame and sash, transom or mullion profile sections The frame, mullion or transom of a window or door system shall be installed vertically in the surround panel aperture. The internal specimen face shall be as close to t