1、April 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、91.060.50!$T_“1994960www.din.deDDIN EN 12428Industrial, commercial and garage doors Thermal transmittance Requirements for the calculation;English version EN 12428:2013,English translation of DIN EN 12428:2013-04Tore Wrmedurchgangskoeffizient Anforderungen an die Berechnung;Englische Fassung EN 1242
3、8:2013,Englische bersetzung von DIN EN 12428:2013-04Portes et portails quipant les locaux industriels, commerciaux et les garages Transmission thermique Exigences pour les calculs;Version anglaise EN 12428:2013,Traduction anglaise de DIN EN 12428:2013-04SupersedesDIN EN 12428:2000-11www.beuth.deDocu
4、ment comprises 16 pagesIn case of doubt, the German-language original shall be considered authoritative.04.13 DIN EN 12428:2013-04 2 A comma is used as the decimal marker. National foreword This document (EN 12428:2013) has been prepared by Technical Committee CEN/TC 33 “Doors, windows, shutters, bu
5、ilding hardware and curtain walling” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-09-01 AA Tren, Tore, Fenster, Abschlsse, Baubeschlge und Vorhangf
6、assaden. Amendments This standard differs from DIN EN 12428:2000-11 as follows: a) this European Standard shows updated procedures for the calculation of thermal transmittance, including different types of glazing, frames and/or panels; b) symbols and units have been added to Clause 3; c) Clauses 4
7、and 5 have been revised; d) Clause 4 now includes descriptions and a definition of the geometrical characteristics; e) Clause 5 defines the calculation method including information about boundaries, cavities, point bridges and the calculation method; f) a new Annex A informs about energy efficiency.
8、 Previous editions DIN EN 12428: 2000-11 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12428 January 2013 ICS 91.060.50 Supersedes EN 12428:2000English Version Industrial, commercial and garage doors - Thermal transmittance - Requirements for the calculation Portes et portails quipant les loc
9、aux industriels, commerciaux et les garages - Transmission thermique - Exigences pour les calculs Tore - Wrmedurchgangskoeffizient - Anforderungen an die Berechnung This European Standard was approved by CEN on 1 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulation
10、s 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 the CEN-CENELEC Management Centre or to any CEN member. Th
11、is 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN mem
12、bers are the national standards bodies of 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, Portu
13、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by an
14、y means reserved worldwide for CEN national Members. Ref. No. EN 12428:2013: EEN 12428:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 1.1 General . 5 1.2 Exclusions 5 2 Normative references . 5 3 Terms, definitions, symbols and units 6 3.1 Terms and definitions 6 3.2 Symbols and unit
15、s . 6 3.3 Subscripts 7 3.4 Superscripts . 7 4 Geometrical characteristics . 7 5 Calculation 8 5.1 General principle 8 5.2 Boundaries . 9 5.3 Cavities . 9 5.4 Point bridges and hardware components . 9 5.5 Calculation method 10 Annex A (informative) Thermal insulation related to buildings (energy effi
16、ciency) . 11 Bibliography 14 DIN EN 12428:2013-04 EN 12428:2013 (E) 3 Foreword This document (EN 12428:2013) has been prepared by Technical Committee CEN/TC 33 “Doors, windows, shutters, building hardware and curtain walling”, the secretariat of which is held by AFNOR. This European Standard shall b
17、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. Attention is drawn to the possibility that some of the elements of this document may
18、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 12428:2000. This European Standard shows updated procedures for the calculation of thermal transmittance, including different types of glazing,
19、 frames and/or panels. Symbols and units have been added to Clause 3. Clauses 4 and 5 have been revised. Clause 4 now includes descriptions and definition about the geometrical characteristics. Clause 5 now defines the calculation method including information about boundaries, cavities, point bridge
20、s and the calculation method. New Annex A informs about energy efficiency. This document is one of a series of performance standards identified within the product standard EN 13241-1. European Standards as well as relevant national regulations and standards will enable the actual exposure levels to
21、be determined for the individual locations of the products. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
22、 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 the United Kingdom. DIN EN 12428:2013-04 EN 124
23、28:2013 (E) 4 Introduction Industrial, commercial and garage doors often contain different kinds of materials, joined in different ways, and can exhibit numerous variations of geometrical shape and thermal conductivity values. Thermal bridges around the door or gate perimeter and between door or gat
24、e elements affect the thermal transmittance of the complete door or gate in a significant way. The result of calculations, carried out following the procedures specified in this paper, can be used for comparison of the thermal transmittance of different types of industrial, commercial and garage doo
25、rs or as part of the input data for calculating the heat consumption of a building. The standard EN ISO 10077 (all parts) describes a calculation method suitable for windows and pedestrian doors. Although this method basically applies to vertical windows, references to some parts of this method have
26、 been made concerning boundary conditions and the treatment of cavities. EN ISO 12631 specifies a procedure for calculating the thermal transmittance of curtain wall structures. The principles of the single assessment method have been used in this paper. DIN EN 12428:2013-04 EN 12428:2013 (E) 5 1 Sc
27、ope 1.1 General This European Standard specifies a method for calculating the thermal transmittance of industrial, commercial and garage doors in a closed position. The doors are intended for installation in areas in the reach of people, for which the main intended uses are giving safe access for go
28、ods, vehicles and persons in industrial, commercial or residential premises. The doors may be manually or power operated. This document applies to all doors provided in accordance with EN 13241-1. The calculation can include different types of glazing, frames with or without thermal breaks, and diff
29、erent types of opaque panels and thermal bridge effects at the edge of the panel or joint between the glazed area, the frame area and the panel area. This paper does not include the effects of solar radiation, heat transfer caused by air leakage, calculation of condensation, additional heat transfer
30、 at the corners and edges of the door connections to the main building structure, or thermal effects between the door and the main building structure. 1.2 Exclusions It does not apply to: lock gates and dock gates; doors on lifts; doors on vehicles; armoured doors; doors mainly for the retention of
31、animals; theatre textile curtains; horizontally moving doors less than 2,5 m wide and 6,25 m2area, designed principally for pedestrian use; revolving doors of any size; doors outside the reach of people (such as crane gantry fences); railway barriers; barriers used solely for vehicles. 2 Normative r
32、eferences 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 amendments) applie
33、s. DIN EN 12428:2013-04 EN 12428:2013 (E) 6 EN 673, Glass in building Determination of thermal transmittance (U value) Calculation method EN 12433-1:1999, Industrial, commercial and garage doors and gates Terminology Part 1: Types of doors EN 12433-2:1999, Industrial, commercial and garage doors and
34、 gates Terminology Part 2: Parts of doors EN ISO 6946:2007, Building components and building elements Thermal resistance and thermal transmittance Calculation method (ISO 6946:2007) EN ISO 7345:1995, Thermal insulation Physical quantities and definitions (ISO 7345:1987) EN ISO 10077-2:2012, Thermal
35、performance of windows, doors and shutters Calculation of thermal transmittance Part 2: Numerical method for frames (ISO 10077-2:2012) EN ISO 10211, Thermal bridges in building construction Heat flows and surface temperatures Detailed calculations (ISO 10211) EN ISO 12631:2012, Thermal performance o
36、f curtain walling Calculation of thermal transmittance (ISO 12631:2012) 3 Terms, definitions, symbols and units 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12433-1:1999, EN 12433-2:1999, EN ISO 7345:1995 and EN ISO 6946:2007 apply. The thermal t
37、ransmittance of glazing units, Ug, is defined according to EN 673 which does not include the edge effects. 3.2 Symbols and units Symbol Quantity Unit A area m Q heat loss per length W/m W width m H height m L length m d depth m temperature C Ugthermal transmittance W/(mK) distance m DIN EN 12428:201
38、3-04 EN 12428:2013 (E) 7 emissivity thermal conductivity W/(mK) linear thermal transmittance W/(mK) 3.3 Subscripts Symbol Subscripts D industrial, commercial or garage door or gate door door (daylight opening) p panel g glazing tot total joint connection between two filling elements 3.4 Superscripts
39、 Definition of the areas for joint: see EN ISO 12631:2012, 6.2.2.3. 4 Geometrical characteristics The main definitions for the boundaries and areas are shown in Figure 1. The door is divided into areas/lengths of different kinds (windows, panel sections) with additional heat flows. Representative pa
40、rts of the industrial, commercial or garage door shall be modelled (indicated by 1-1 to 5-5 in Figure 1) and its heat losses shall be calculated. DIN EN 12428:2013-04 EN 12428:2013 (E) 8 Key W daylight width H daylight height Ww width of window Hw height of window Door W x H Window Ww x HW 1 gap at
41、top edge of door and opening 2 joint round window in panel 3 gap at side of door and opening 4 joint between panels 5 gap between bottom edge of door and floor 6 window 7 door edge 8 daylight vertical edge 9 floor Figure 1 Sketch of a door (from the inside) 5 Calculation 5.1 General principle The ca
42、lculations shall be carried out using a two-dimensional numerical method conforming to EN ISO 10211. It is assumed that the principal heat flow in a section is perpendicular to a plane parallel to the external and internal surfaces. But at the perimeter of an industrial, commercial or garage door an
43、d between door sections the heat flow will be two or three dimensional. The heat flow can be conducted along components with high thermal conductivity around parts with high thermal resistance, especially where metal parts connect (for instance internal surface sheet end cap/edge profile external su
44、rface sheet). The linear thermal transmittance of the connections between the door panel and surrounding construction or between panels is determined as the additional heat flow compared to the one-dimensional heat flow through the door panel. DIN EN 12428:2013-04 EN 12428:2013 (E) 9 All components
45、in the industrial, commercial or garage door or gate that affect the heat flow should be included in the thermal transmittance. This value is calculated as the total heat flow rate through the door, divided by the temperature difference (20 C) and the partition wall aperture area (width height). The
46、 surrounding walls and floor are regarded as adiabatic and consequently as having no influence on the thermal transmittance of the door. Input data (thermal properties) shall be evaluated by measurement, two- or three-dimensional finite element or finite difference software calculation or by tables
47、or diagrams. 5.2 Boundaries The external and internal surface resistances for horizontal heat flow are given in EN ISO 10077-2:2012, Annex B. Definitions of increased surface resistance due to reduced radiation/convection heat transfer are shown in EN ISO 10077-2:2012, Figure B.1. The cut-off plane
48、through the panel and surround wall/floor in the main building structure shall be taken as adiabatic. The adiabatic boundary through the panel can either be a plane of symmetry or where no edge effects are present. The distance from the edge to the adiabatic cut-off plane shall be chosen in such way that increasing the distance does not change the calculated -value significantly (see EN ISO 12631:2012, 5.2). 5.3 Cavities 5.3.1 General The heat flow rate in ca
