1、STD-BSI BS EN 247-ENGL 1977 Lb24bb9 lJb3LLL LOLi BRITISH STANDARD Heat exchangers - Terminology The European Standard EN 247 : 1997 has the status of a British Standard ICs 01.040.27; 27.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 247 : 1997 STD-BSI BS EN 247-
2、ENGL 1977 1b24bb9 Ob38112 O40 W Amd. No. Date BS EN 247 : 1997 Text affected This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 September 1997 O BSI 1997 Committees resp
3、onsible for this British Standard The preparation of this British Standard was entnisted to Technical Committee RHE/30, Heat exchangeis, upon which the following bodies were represented: British Refrigeration Association Building Services Research and Information Association Federation of Environmen
4、tal We Association HETAC Association Waterheater Manufacturers Association The following BSI references relate to the work on this standara Committee reference RHFY30 Draft for comment ENV 247 ISBN O 680 27974 X STD-BSI BS EN 2q7-ENGL 3777 Lb2qbbS Ob38113 T87 BS EN 247 : 1997 Contents Page Committee
5、s responsible Inside front cover National foreword ii Foreword 2 Text of EN 247 3 * * m O BSI 1997 1 STD-BSI BS EN 247-ENGL 1777 m Lb24bbS Ob38114 713 m BS EN 247 : 1997 National foreword This British Standard has been prepared by Technical Committee RHEBO, and is the Englzsh language version of EN
6、247 : 1997 Heat exchngms - Tmimbgy, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a ront cover, an inside front cover, pages i and ii, the EN title
7、page, pages 2 to 14, an inside back cover and a back cover. ii O BSI 1997 STD-BSI BS EN 297-ENGL 1997 Lb24bb9 Ob38115 85T EN 247 February 1997 ICs 01.040.27; 27.060.30 Descriptors: Heat transfer, heat exchangers, vocabulary English version Echangeurs thermiques - ikrminologie Heat exchangers - Emino
8、logy Supersedes ENV 247 : 1990 This European Stanad was approved by CEN on 1997-01-10. CET. members are bound to comply with the CENKENELEC Intrnal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists
9、and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsi
10、bility of a CEN member into its own hguage and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finiand, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Por
11、tugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standar-on Comitk Europen de Nonnalisation Europisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1997 Copyright reserved to CEN members Ref. No. EN 247 : 1997 E Page 2 EN 247 : 1997
12、Foreword This European Standard has been prepared by Whnical Committee CENirC110, Heat exchangers, the secretanat 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 August 19
13、97, and conflicting national standards shall be withram at the latest by August 1997. The document was implemented previously as a European Prestandard (E“) in 1990 and no technical changes have been made. Accordmg to the CENKENELEC Internal Regulations, the national standards organizations of the f
14、ollowing countries are bound to implement this European StanM Austria, Belgium, Denmark, Fnland, hce, Germanx Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwax Portugal, Spain, Sweden, Switzerland and the United Kingdom Contents Foreword introduction 1 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.
15、8 2.9 2.10 2.11 2.12 2.13 2.14 3 3.1 3.1.1 3.1.2 pa 2 4 3.1.3 3.1.4 3.1.5 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.2 4.2.1 4.2.2 Scope 4 Definitions Pasallel-flow arrangement Counterflow arrangement Pure croscflow Anthethodic oved-flow arrangement Methodic overal
16、l-flow arrangement Wephase fluid Singlephase fluid Fluidized bed Method of heat transfer Number of pasages (passes) nibe sheet General arrangement of heat transfer Steady or permanent thermal conditions Cyciic thermal Conditions Terminology - Main criteria Physical criteria General arrangement of he
17、at transfer Method of heat transfer 4.2.3 4 4.3 5 4.3.2 5 4.4 4.3.1 5 5 4.4.1 5 4.4.2 5 4.5 5 4.5.1 5 4.5.2 5 4.5.3 5 4.6 4.6.1 4.6.2 4.6.3 5 5 4.6.4 5 4.7 5 4.7.1 Arrangement of fluid flow Thermal conditions of the heat transfer ) - concentric. - spiral shaped; - helical. 4.6.1.3.3 of coil type 4.6
18、.2 Plate heat exchangers 4.6.2.1 with welded or soldered plates 4.6.2.1.1 single plates 4.6.2.1.2 several plates: - non-dismountable; - with dismountable shel. 4.6.1.3.2 with wound tube bundles: 4.6.2.2 with dismountable sealed plates 4.6.2.3 spiral shaped 4.6.3 Heat exchan - Exchangers carrying off
19、 part of the cycle heat flux for another application; - Dissipation exchangers. A.2 Environmental engineering - Unit heaters; - Convectors; - Recuperators in gas circuits; - Recuperators in air exhaust lines; - Humidifiers. Annex B (informative) Examples for illustration of the terminology in clause
20、 4. B.l Tube heat exchangers B.l.l Coil heat exchangers (see figure B.1) , Figure B.l Coil heat exchangers B.1.2 Heat exchangers with tube in tube (double coaxial tube) (see figures B.2, B.3, B.4) Figure B.3 U-bent, dismountable I I I Figure B.4 Wound or bent I I I B.1.3 Multi-tube heat exchangers B
21、.1.3.1 Straight B.1.3.1.1 Concentric (see figure B.5) B.1.3.1.2 With tube bundLes (see figures B.6, B.7, B.8, B.9, B.lO, B.ll) B.1.3.2 Heat exchngers with wound tube undles (see fgures B. 12, B. 13) I 1 Figure B.2 Straight, single type O BSI 1997 STD-BSI BS EN 247-ENGL 1777 1b2qbb7 Ob38123 92b Page
22、9 EN 247 : 1997 Figure B.6 Concentric Figure B.6 With U-tubes Figure B.7 With fixed tube plates Figure B.8 With floating head O BSI 1997 Page 10 EN 247 : 1997 I Figure B.9 With sliding head and O-ring seals I I Figure B.10 With sliding head and caulked seals I Figure B.ll Heat exchangers of bayonet
23、type Figure B.12 Helical O BSI 1997 STD-BSI BS EN 247-ENGL li777 LbZL(bb7 Ob38125 7T9 W Page 11 EN 247 : 1997 Figure B.13 Spiral-shaped B.1.3.3 Heat e.xch.angm of coil type (see figures B.14, B.15, B.16, B.17) Figure B.14 Coil with straight tubes and bends Figure B.15 Coil and accumulator bends Figu
24、re B.16 Coil with tube sheets and accumulator boxes with plugs Figure B.17 Coil with tube sheets and accumulator boxes with covers O BSI 1997 Page 12 EN 247 : 1997 B.2 Plate heat exchangers B.2.1 With welded or soldered plates (see figures B.18, B.19, B.20, B.21) Figure B.18 Single plates Figure B.1
25、9 Several non-dismountable plates Figure B.20 Several corrugated, non- dismountable plates Figure B.21 Dismountable shell-type lamella heat exchanger B.2.2 Plate heat exchanger with seals (see figure B.22) Figure B.22 Plate heat exchanger with seals O BSI 1997 STD-BSI BS EN 297-ENGL 1997 1b29bb9 Ob3
26、8127 571 Page 13 EN 247 : 1997 B.3 Heat exchangers of stacked blocks or with crossing channels (see figure B.24) B.2.3 Spiral shaped (see figure B.23) Figure B.24 Heat exchanger of stacked blocks or with crossing channels Figure B.23 Sprial shaped O BSJ 1997 STD-BSI BS EN 2q7-ENGL 1977 1b24bb7 Ob381
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