BS-EN-62194-2005.pdf
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1、BRITISH STANDARD BS EN 62194:2005 Method of evaluating the thermal performance of enclosures The European Standard EN 62194:2005 has the status of a British Standard ICS 31.240 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 08:34:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 62194:20
2、05 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 6 January 2006 BSI 6 January 2006 ISBN 0 580 47195 0 National foreword This British Standard is the official English language version of EN 62194:2005. It is identical with IEC 62194:2005. Th
3、e UK participation in its preparation was entrusted to Technical Committee EPL/48, Electromechanical components and mechanical structures for electronic equipment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cros
4、s-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 the BSI Electronic Catalogue or of
5、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 enquirers to understand the text; pr
6、esent to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an in
7、side front cover, the EN title page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 08:34:12 GMT+00:00 20
8、06, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 62194 NORME EUROPENNE EUROPISCHE NORM October 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart
9、 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62194:2005 E ICS 31.240 English version Method of evaluating the thermal performance of enclosures (IEC 62194:2005) Mthode dvaluation de la performance th
10、ermique des enveloppes (CEI 62194:2005) Verfahren zur Bewertung der Wrmeleistung von Gehusen (IEC 62194:2005) This European Standard was approved by CENELEC on 2005-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
11、opean 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (En
12、glish, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria
13、, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffiel
14、dun, na, Sat Nov 11 08:34:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 48D/324/FDIS, future edition 1 of IEC 62194, prepared by SC 48D, Mechanical structures for electronic equipment, of IEC TC 48, Electromechanical components and mechanical structures for electronic e
15、quipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62194 on 2005-09-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-06-01 late
16、st date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-09-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62194:2005 was approved by CENELEC as a European Standard without any modification. In the officia
17、l version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60297-2 NOTE Harmonized as HD 493.2 S1:1988 (not modified). IEC 60721 NOTE Harmonized in EN 60721 series (not modified). IEC 60917-2 NOTE Harmonized as EN 60917-2:1994 (not modified). IEC 61587-1 NOTE
18、Harmonized as EN 61587-1:1999 (not modified). IEC 61969-1 NOTE Harmonized as EN 61969-1:2000 (not modified). IEC 61969-2 NOTE Harmonized as EN 61969-2:2000 (not modified). IEC 61969-3 NOTE Harmonized as EN 61969-3:2001 (not modified). _ EN 62194:2005 2 Licensed Copy: sheffieldun sheffieldun, na, Sat
19、 Nov 11 08:34:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CONTENTS INTRODUCTION.5 1 Scope 6 2 Normative references .6 3 Terms, definitions, symbols and abbreviations.7 3.1 Definition of enclosure design principles 7 3.2 Symbols and abbreviated terms .7 4 Flow chart for establishing the absorption
20、factor 9 5 Evaluation of the heat load . 10 6 Environmental conditions 10 6.1 Outdoor applications10 6.2 Indoor applications 1 1 7 Determination of the enclosure absorption factor .11 7.1 Measurement set-up 11 7.2 Calculation . .13 8 Result and presentation . .13 8.1 Comparison of different enclosur
21、e designs .13 8.2 Heat transfer through walls 14 8.3 Airflow between walls 15 8.4 Results for single-wall enclosures 16 8.5 Results for double-wall enclosures (simple method) .17 Annex A (normative) Heat transfer rate 2 0 Annex B (informative) Geometric relations for solar radiation 20 Annex C (info
22、rmative) Example for single and double wall calculation .22 Annex D (informative) Iteration method for exact results of a double wall enclosure 24 Annex ZA (normative) Normative references to international publications with their corresponding European publications.3 1 Bibliography .30 Figure 1 Encl
23、osure types. .7 Figure 2 Flow chart for establishing the absorption factor9 Figure 3 Example of measurement set-up for enclosure absorption factor .12 Figure 4 Heat transfer through walls .14 Figure 5 Airflow between walls .16 Figure B.1 Geometric angles for solar radiation impact .20 Figure D.1 The
24、rmal model for double wall enclosure .24 Figure D.2 Iteration procedure for double-wall enclosures .26 EN 62194:2005 3 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 08:34:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Table 1 Convection heat transfer coefficients .11 Table 2 Parameters for s
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