BRITISHSTANDARD BSEN328:1999
Heat exchangers -Test procedures for establishing the performanceofforced convectionunitair coolers for refrigeration
British Staundard The European Standard EN 328:1999 has the status of a
ICS 23.120; 27.060.30
BS EN 328:1999
Nationalforeword
DD ENV 328:1993 which is withdrawn. The UK partipation inits preparation was entusted toTechnical Committee RHE/30, Heat exchangers, which has the responsibility to: - ald enquirers to understand the text; present to the responsible European mittee any enquiries on the intepretatonor proas forchangeadkeep teUK interests f monitor relsted intemational and European developments and promulgate them in the UK A list of organizations represented on this mittee can be obtained on request to its secretary. Cross-references The British Standards which implement intemational or European publications refered to in this document may be found in the BSI Standards Catalogue under the “Find” facility of the BSI Standards Electronic Catalogue.section entitied “Intemational Standards Correspondence Index, or by using the osdses contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
Summary of pages Thisdocuent cmprises afrontcover, aninsidefront cove,theENte age pages 2 to 37, and a back cover. The BSI copyright notice displayed in this docurment indicates when the document was last issued. beenpreparedunder the This Btish Standard, having Amendments issued since publication direction of te Engineering Sector Comjte, was published Amd. No. Date Comments under the thonty of the Standards Coemnittee and es into effect on 15 October 1999 BSI 10-1999
60ICC 0890 NHST
EUROPEANSTANDARD EN 328 NORMEEUROPEENNE EUROPAISCHENORM April 1999 ICS 23.120.00; 27.060.30 Supersedes ENV 328:1992
English version Heat exchangers-Test procedures forestablishing the performance of forced convection unit air coolersfor refrigeration determination de la performance des atrofrigoriferesBestimmung der Leistungskriterien von Echangeursthermiques-Procedures d'essai pourlaWarmeaustauscher -Prufverfahren zur a convection forcee Ventilatorluftkahlerm This European Standard was approved by CEN on 10 March 1999. CENmembersareboundto ply withtheCEN/CENELECIntemlRegulations whichstipulatethe conditonsforgiingthisEuropStdardtestasfionlstandrdwithoutanyleatinUp-tdt listsandbibliographicalreferences concrming suchnatiostandardsmaybeobtinedonapplicationto th Central Secretariat or to any CEN member. This European Standard exists in three official erss(English,FrenchGeman) versonin anyther Central Secretariat has the same status as the official versions. languagemadeby tranlation nder theresponsibilityofaCENmember into its ow language and notified to the CENmmersare natona sndadsodiefusriagiumCechRulicDmarkFinland Framn Switzerland and United Kingdom.
CEN European Commite for Standardization Comite Europeende Normalisation Europlisches Komitee fur Normung Central Secretariat: nue de Stassart, 36 B-1050 Brussels Members. 1999 CEN All rights of exploitation in ay fom and by any means reserved woridwide for CEN nationalRef. No. EN 328:1999 E
Page 2 EN328:1999 Contents Page Foreword3 Introduction4 1Scope4 2Normative references4 3Definitions4 4 Symbols9 5 Standard capacity10 6 Manufacturer’s data12 7 Measurements13 8 Testing methods and equipment16 9Test procedures19 10 Calculating the coling capacity22 11Conversion to standard conditions24 12 Test report27 Annex A (normative) Test installation for direct expansion operation28 Annex B (normative) Test installation for liquids29 Amnex C (informative) Superhcating and capacity30 Annex D (normative) Test arrangement31 Annex E (normative） Operation with liquid overfeed by pump cireulation32 Annex F (informative) Procedure to measure the oil content37 Figure A.1-Test installation for direct expansion operation28 Figure B.1-Test installation for liquids29 de pe nIa30 FigureD.1- Minimum distances for dual discharge31 Figure D.2 Minimumdistancesforsingledischarge31 Figure E.2- Figure E.1- Circuit diagram for pump circulation3637 Definition of recirculation rate Table1- Standardconditionsforrefrigerants11 Table 2- Standard conditions for liquids11 Table 3-Uncertainty of measurements1332 Table E.1Standard conditios foroperation with liquid overfeed by pump circulation
BSI 10-1999
Page3 EN 328:1999 Foreword This EuropeanStanard hasboenprepared byTechicalCommiteCEN/TC 110,Heat exchangers,the Secretariat of which is held by BSi. This European Standard replaces ENV 328:1992. or by endorsement, t the latest by October 1999,and conficting national standards shall be withdraw at the This EuropeanStandard shallbe givenhestatusfanationl standarditherbypublicatinofanidentical text latest by October1999. Francendin counriearoudthisEurpenndrd:usigiumCpubliDmkFinnd Switzeriand and the United Kingdom.
BSI 10-1999...
BS EN 328-1999 heat exchangers. test procedures for establishing the performance of forced convection unit air coolers for refrigeration this european .pdf
