1、October 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).IC
2、S 23.140; 27.200!%)d“2066595www.din.deDDIN EN 12900Refrigerant compressors Rating conditions, tolerances and presentation of manufacturersperformance data;English version EN 12900:2013,English translation of DIN EN 12900:2013-10Kltemittel-Verdichter Nennbedingungen, Toleranzen und Darstellung von Le
3、istungsdaten des Herstellers;Englische Fassung EN 12900:2013,Englische bersetzung von DIN EN 12900:2013-10Compresseurs pour fluides frigorignes Conditions de dtermination des caractristiques, tolrances et prsentation desperformances par le fabricant;Version anglaise EN 12900:2013,Traduction anglaise
4、 de DIN EN 12900:2013-10SupersedesDIN EN 12900:2006-01www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 16 pages09.13 DIN EN 12900:2013-10 2 A comma is used as the decimal marker. National foreword This document (EN 12900:2013) has been p
5、repared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units” (Secretariat: AENOR, Spain). The responsible German body involved in its preparation was the Normenausschuss Kltetechnik (Refrigera-tion Technology Standards Committee), Working Committee NA 044-00-14 AA Kltemittel-Ver
6、dichter. Amendments This standard differs from DIN EN 12900:2006-01 as follows: a) Clause 3 “Terms and definitions” has been revised; b) the revised standard takes into account the application of CO2; c) the requirements on part load conditions according to Mandate M/488 have been considered. EUROPE
7、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12900 July 2013 ICS 23.140; 27.200 Supersedes EN 12900:2005English Version Refrigerant compressors - Rating conditions, tolerances and presentation of manufacturers performance data Compresseurs pour fluides frigorignes - Conditions de dtermination des
8、caractristiques, tolrances et prsentation des performances par le fabricant Kltemittel-Verdichter - Nennbedingungen, Toleranzen und Darstellung von Leistungsdaten des Herstellers This European Standard was approved by CEN on 8 June 2013. CEN members are bound to comply with the CEN/CENELEC Internal
9、Regulations 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
10、member. This 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 version
11、s. CEN members 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, Pol
12、and, Portugal, 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
13、 and by any means reserved worldwide for CEN national Members. Ref. No. EN 12900:2013: EEN 12900:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Parameters for the presentation of performance data.6 5 Requirements .8 6 Performance data.8 6.1 Genera
14、l 8 6.2 Tabular or graphical form .9 6.3 Polynomial form .9 7 Standard reference points . 10 8 Tolerances . 12 9 Conversion methods 14 9.1 Suction gas superheat . 14 9.2 Compressor speed for open drive compressors 14 DIN EN 12900:2013-10EN 12900:2013 (E) 3 Foreword This document (EN 12900:2013) has
15、been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. 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 January 2014 and
16、 conflicting national standards shall be withdrawn at the latest by January 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This
17、 document supersedes EN 12900:2005. The main changes with respect to the previous edition are listed below: a) Clause 3 “Terms and definitions” is modified; b) the revised standard takes into account the application of CO2; c) the requirements on part load conditions according to Mandate M/488 are c
18、onsidered. 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, Finland, Former Yugoslav Republic of Macedonia,
19、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 12900:2013-10EN 12900:2013 (E) 4 1 Scope This European Standard speci
20、fies the rating conditions, tolerances and the method of presenting manufacturers data for positive displacement refrigerant compressors. These include single stage compressors and single and two stage compressors using a means of fluid subcooling. This is required so that a comparison of different
21、refrigerant compressors can be made. The data relate to the refrigerating capacity and power absorbed and include requirements for part-load operation where applicable. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensa
22、ble for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 378-1:2008+A2:2012, Refrigerating systems and heat pumps Safety and environmental requirements Part 1: Basic req
23、uirements, definitions, classification and selection criteria EN 13771-1, Compressors and condensing units for refrigeration Performance testing and test methods Part 1: Refrigerant compressors ISO 817, Refrigerants Designation system 3 Terms and definitions For the purposes of this document, the te
24、rms and definitions given in EN 378-1:2008+A2:2012 and the following apply. 3.1 positive displacement compressor compressor in which compression is obtained by changing the internal volume of the compression chamber SOURCE: EN 378-1:2008+A2:2012, 3.4.6 3.2 refrigerating capacity product of the low p
25、ressure mass flow of refrigerant through the compressor and the difference between the specific enthalpy of the refrigerant at the low pressure of the compressor inlet and the specific enthalpy of fluid entering the evaporator expansion device Note 1 to entry: This latter enthalpy is related to the
26、stated fluid temperature under following pressure conditions: for single-stage expansion cycles the compressor discharge pressure; for multiple-stage expansion cycles the pressure (dew point temperature) at the corresponding compressor intermediate port. The refrigerant at the low compressor inlet i
27、s superheated above the suction dew point temperature to the stated value. Note 2 to entry: Condensing temperature is defined as saturated dew point temperature. DIN EN 12900:2013-10EN 12900:2013 (E) 5 3.3 subcooling difference between the bubble point temperature of the refrigerant corresponding to
28、 the compressor discharge pressure and the temperature of the liquid refrigerant below the bubble point 3.4 suction gas superheat difference between the dew point temperature of the refrigerant corresponding to the compressor suction pressure and the suction gas temperature of the refrigerant at the
29、 compressor inlet 3.5 power absorbed for externally driven compressors: the power at the compressor shaft for motor compressors: the electrical power input at the motor terminals for motor compressors with a specific means of factory assembled or factory specified frequency inverter for variable spe
30、ed (part load) capacity regulation, the electrical power input at the inverter input terminals 3.6 coefficient of performance COPrratio of refrigerating capacity to the power absorbed 3.7 subcritical operation operating condition with discharge pressure level below the critical pressure 3.8 transcri
31、tical operation operating condition with discharge pressure level above the critical pressure 3.9 part load operation for compressors with capacity control mechanism, part load is interpreted as operation with active capacity control at reduced capacity Note 1 to entry: On/off cycling of the compres
32、sor motor is not considered as capacity control in this context for declaration of part load performance. 3.10 fluid refrigerant liquid, gas or vapour including the state of appearance close to and above the critical pressure 3.11 evaporating temperature dew temperature corresponding to the suction
33、pressure of the compressor 3.12 condensing temperature dew temperature corresponding to the discharge pressure of the compressor DIN EN 12900:2013-10EN 12900:2013 (E) 6 4 Parameters for the presentation of performance data The parameters as shown in Table 1 to Table 4 shall be used for the presentat
34、ion of the performance data. Table 1 Parameters for the presentation of performance data with compressors used in standard applications Refrigerant Parameters Suction gas temperature (C) or superheat (K) at the compressor inlet Ambient temperature around the compressor Compressor Application Halocar
35、bons and hydrocarbons including refrigerant blends 32 C 35 C Household and similar refrigerators/ freezers 20 C or 10 K Other applications R 744 (CO2) 32 C Household and similar refrigerators/ freezers 10 K (30 Ca ) Other applications R 717 5 K Any application using ammonia Other refrigerants As app
36、ropriate, to be clearly specified in performance data aReference point A5, Table 6. The refrigerating capacity shall not allow for any fluid subcooling for subcritical operation. For transcritical operation refrigeration capacity has to be related to the gas cooler outlet temperature and the compres
37、sor discharge pressure. If reference points mentioned in Table 5 to Table 7 fall inside the compressor application envelope, compressor performances shall be displayed at those rating conditions. For CO2transcritical applications gas cooler outlet temperature shall be displayed. NOTE Tables 2 to 4 r
38、efer to economised cycles. DIN EN 12900:2013-10EN 12900:2013 (E) 7 Table 2 Parameters for the presentation of performance data with compressors using a specific means of factory assembled or factory specified liquid subcooler (subcritical operation) or aftercooler (transcritical operation) Refrigera
39、nt Suction gas temperature (C) or superheat (K) at the compressor inlet Ambient temperature around the compressor Compressor application Halocarbons and hydrocarbons including refrigerant blends 20 C or 10 K 35 C Any application with factory assembled or factory specified subcooler or aftercooler R
40、744 (CO2) 10 KaR 717 (NH3) 5 K Other refrigerants As appropriate, to be clearly specified in performance data NOTE For subcritical operation liquid entering the subcooler is at saturated (bubble) temperature equivalent to the refrigerant pressure at the compressor outlet. For transcritical operation
41、 fluid entering the aftercooler is at gas cooler outlet temperature and compressor discharge pressure. aOr other conditions from Table 6. The refrigerating capacity includes the subcooling provided by the subcooler or additional cooling provided by the aftercooler. For CO2 transcritical applications
42、 gas cooler outlet temperature shall be displayed. Table 3 Parameters for the presentation of performance data with compressors using an individually selected liquid subcooler (subcritical operation) or aftercooler (transcritical operation) Refrigerant Suction gas temperature (C) or superheat (K) at
43、 the compressor inlet Liquid subcooling (K) or temperature (C) Saturated intermediate (dew) temperature (C) or pressure (bar) Ambient temperature around the compressor Compressor application Halocarbons and hydrocarbons including refrigerant blends 20 C or 10 K 5 K above bubble point temperature cor
44、responding to the pressure at the intermediate port of the compressor to be specified with reference to suction and discharge pressure 35 C Any application with individually selected subcooler or aftercooler R 744 (CO2) 10 KaR-717 (NH3) 5 K Other refrigerants As appropriate, to be clearly specified
45、in performance data NOTE For subcritical operation liquid entering the subcooler is at saturated (bubble) temperature equivalent to the refrigerant pressure at the compressor outlet. For transcritical operation fluid entering the aftercooler is at gas cooler outlet temperature and compressor dischar
46、ge pressure. aOr other conditions from Table 6. The refrigerating capacity includes the subcooling provided by the subcooler or additional cooling provided by the aftercooler. For CO2transcritical applications gas cooler outlet temperature shall be displayed. DIN EN 12900:2013-10EN 12900:2013 (E) 8
47、Table 4 Parameters for the presentation of performance data with compressors using an open flash interstage receiver (tank) Refrigerant Suction gas temperature (C) or superheat (K) at the compressor inlet Liquid temperature (C) Saturated intermediate (dew) temperature (C) or pressure (bar) Ambient t
48、emperature around the compressor Compressor application Halocarbons and hydrocarbons including refrigerant blends 20 C or 10 K bubble point temperature corresponding to the pressure at the intermediate port of the compressor to be specified with reference to suction and discharge pressures 35 C Any
49、application with open flash receiver R 744 (CO2) 10 KaR 717 (NH3) 5 K Other refrigerants As appropriate, to be clearly specified in performance data NOTE For subcritical operation liquid entering the interstage receiver is at saturated (bubble) temperature equivalent to the refrigerant pressure at the compressor outlet. For transcritical operation fluid entering the expansion device to the interstage receiver is at gas cooler outlet
