BS EN 12239-2001 Ventilation for buildings - Air terminal devices - Aerodynamic testing and rating for displacement flow applications《建筑物通风 空调终端装置 换气设施的空气动力试验和额定值》.pdf
《BS EN 12239-2001 Ventilation for buildings - Air terminal devices - Aerodynamic testing and rating for displacement flow applications《建筑物通风 空调终端装置 换气设施的空气动力试验和额定值》.pdf》由会员分享,可在线阅读,更多相关《BS EN 12239-2001 Ventilation for buildings - Air terminal devices - Aerodynamic testing and rating for displacement flow applications《建筑物通风 空调终端装置 换气设施的空气动力试验和额定值》.pdf(22页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS EN 12239:2001 Ventilation for buildings Air terminal devices Aerodynamic testing and rating for displacement flow applications The European Standard EN 12239:2001 has the status of a British Standard ICS 91.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT
2、 LAWBS EN 12239:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 16 October 2001 BSI 16 October 2001 ISBN 0 580 38233 8 National foreword T
3、his British Standard is the official English language version of EN 12239:2001. The UK participation in its preparation was entrusted to Technical Committee RHE/2, Air distribution and air diffusion, which has the responsibility to: A list of organizations represented on this committee can be obtain
4、ed 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 Standards Correspondence Index”, or by using the “Find” fac
5、ility 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 does not of itself confer immunity from legal oblig
6、ations. 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. Summary of pages This d
7、ocument comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD
8、NORME EUROPENNE EUROPISCHE NORM EN 12239 August 2001 ICS 91.140.30 English version Ventilation for buildings Air terminal devices Aerodynamic testing and rating for displacement flow applications Ventilation des btiments Bouches dair Essais arodynamiques et caractrisation pour applications dplacemen
9、t dair Lftung von Gebuden Luftdurchlsse Aerodynamische Prfung und Bewertung fr Anwendung bei Verdrngungsstrmung This European Standard was approved by CEN on 22 June 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea
10、n 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, Fre
11、nch, 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 as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denm
12、ark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050
13、 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12239:2001 EEN 12239:2001 (E) 2 Contents Page Foreword. 3 1 Scope . 4 2 Normative references . 4 3 Terms, definitions and symbols 4 3.1 Terms and definitions 4 3.2 Symb
14、ols 6 4 Types of air terminal devices. 8 5 Method of test 8 5.1 Principle 8 5.2 Test set-up 9 5.3 Installation . 10 5.3.1 General . 10 5.3.2 Test installation D 10 5.3.3 Test installation P 10 5.4 Velocity instruments 10 5.5 Test room 11 5.6 Procedure 11 5.6.1 General . 11 5.6.2 Measuring with trace
15、r gas. 12 5.6.3 Measuring with the zero pressure-difference method.13 5.7 Expression of results. 15 5.7.1 Pressure measurement for a given flow rate 15 5.7.2 Velocity measurement 15 5.7.3 Induction rate measurement . 18 6 Uncertainty 18EN 12239:2001 (E) 3 Foreword This European Standard has been pre
16、pared by Technical Committee CEN/TC 156, Ventilation for buildings, the Secretariat of which is held by BSI. 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 by February 2002, and conflicting national
17、 standards shall be withdrawn at the latest by February 2002. 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, Denmark, Finland, France, Germany, Greece,
18、 Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 12239:2001 (E) 4 1 Scope This European Standard specifies methods for the laboratory aerodynamic testing and rating of low velocity air terminal devices for displacement flow app
19、lications, including the specification of suitable test facilities and measurement techniques. The standard gives only tests for the assessment of characteristics of the air terminal devices under non-isothermal conditions. This standard applies to Class IV air terminal devices as defined in EN 1223
20、8. 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 the subsequent amendments to or
21、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 to applies (including amendments). EN 12238, Ventilation for buildings Air terminal devices Aerodynamic
22、testing and rating for mixed flow applications. prEN 13182:1998, Ventilation for buildings Instrumentation requirements for air velocity measurements in ventilated spaces. EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices Part 1: Orifice plates, nozzles and Venturi t
23、ubes inserted in circular cross-section conduits running full (ISO 5167-1:1991). CR 12792, Ventilation for buildings Symbols and terminology. ISO 5221, Air distribution and air diffusion Rules to methods of measuring airflow rate in an air handling duct. 3 Terms, definitions and symbols 3.1 Terms an
24、d definitions For the purposes of this European Standard, the terms and definitions given in CR 12792, together with the following, apply. 3.1.1 low velocity air terminal device air terminal device which is designed for thermally controlled ventilation e.g. displacement flow applications 3.1.2 prima
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