EN 13771-1-2016 en Compressors and condensing units for refrigeration - Performance testing and test methods - Part 1 Refrigerant compressors《制冷用压缩机和冷凝装置-性能检验和试验方法-第1部分 制冷压缩机》.pdf

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1、BS EN 13771-1:2016Compressors and condensing units for refrigeration Performance testing and test methodsPart 1: Refrigerant compressorsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 13771-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK

2、 implementation of EN 13771-1:2016. It supersedes BS EN 13771-1:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/4, Testing of refrigerant compressors.A list of organizations represented on this committee can be obtained on request to its secre

3、tary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 88067 4 ICS 23.140; 27.200 Compliance with a British Standard

4、cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 13771-1:2016EUROPEAN STANDARD NORME EUROPENNE EUROP

5、ISCHE NORM EN 13771-1 November 2016 ICS 23.140; 27.200 Supersedes EN 13771-1:2003English Version Compressors and condensing units for refrigeration - Performance testing and test methods - Part 1: Refrigerant compressors Compresseurs pour fluides frigorignes et units de condensation pour la rfrigrat

6、ion - Essais de performances et mthodes dessai - Partie 1: Compresseurs pour fluides frigognes Kltemittel-Verdichter und Verflssigungsstze fr die Klteanwendung - Leistungsprfung und Prfverfahren - Teil 1: Kltemittel-Verdichter This European Standard was approved by CEN on 13 August 2016. CEN members

7、 are bound to comply with the CEN/CENELEC Internal 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

8、to the CEN-CENELEC Management Centre 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 responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

9、 Centre has the same status as the official versions. 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, Lit

10、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B

11、-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13771-1:2016 EBS EN 13771-1:2016EN 13771-1:2016 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms, definitions and symbols . 5 3

12、.1 Terms and definitions . 5 3.2 Symbols . 7 3.3 Refrigerant circuit state points 9 4 Uncertainty of measurement and test conditions 10 4.1 Uncertainty of performance data . 10 4.2 Uncertainty of measurement . 10 4.3 Test conditions 11 5 General requirements 13 5.1 Calculation methods 13 5.1.1 Princ

13、iple 13 5.1.2 Specific enthalpy 13 5.1.3 Refrigerant mass flow. 13 5.1.4 Power absorbed 13 5.1.5 Basic formulas . 13 5.2 Requirements for the selection of test method . 15 5.2.1 General . 15 5.2.2 Second concurrent test 15 5.3 Test period 15 5.3.1 General . 15 5.3.2 Steady-state conditions 15 5.3.3

14、Recording of measured data 16 5.4 Pressure and temperature measuring points 16 5.5 Oil circulation 16 5.6 Fractionation . 16 5.7 Calibration of calorimeters for methods A, B and C. 16 5.7.1 Heat leakage . 16 5.7.2 Reference temperature 17 5.7.3 Calibration procedure 17 5.8 Source of refrigerant data

15、 . 17 6 Test methods . 17 6.1 General . 17 6.2 List of test methods . 17 6.2.1 Calorimetric methods . 17 6.2.2 Flow meter methods . 18 6.3 Method A: Secondary fluid calorimeter on the suction side . 18 6.3.1 Description . 18 6.3.2 Calibration 21 6.3.3 Test procedure 21 6.3.4 Requirements 21 6.3.5 Ad

16、ditional information 21 6.4 Determination of refrigerant mass flow 21 BS EN 13771-1:2016EN 13771-1:2016 (E) 3 6.5 Method B: Dry system refrigerant calorimeter on the suction side . 21 6.5.1 Description 21 6.5.2 Calibration . 25 6.5.3 Test procedure 25 6.5.4 Requirements . 25 6.5.5 Additional informa

17、tion . 25 6.5.6 Determination of refrigerant mass flow 25 6.6 Method C: Water-cooled condenser/gas cooler on the discharge side . 26 6.6.1 Description 26 6.6.2 Calibration . 28 6.6.3 Test procedure 28 6.6.4 Requirements . 28 6.6.5 Additional information . 28 6.6.6 Determination of refrigerant mass f

18、low 28 6.7 Method D: Refrigerant gas flow meter 28 6.7.1 Description 28 6.7.2 Requirements . 31 6.7.3 Additional information . 31 6.7.4 Determination of refrigerant mass flow 31 6.8 Method E: Refrigerant flow meter in the liquid line 31 6.8.1 General . 31 6.8.2 Description 31 6.8.3 Test procedure 32

19、 6.8.4 Requirements . 32 6.8.5 Additional information . 32 6.8.6 Determination of the refrigerant and oil mass flow 33 7 Determination of the power absorbed by the compressor . 33 7.1 Measurement . 33 7.1.1 General . 33 7.1.2 Measurement for externally driven compressors 33 7.1.3 Measurement for mot

20、or compressors 33 7.2 Calculation. 33 8 Test report 33 8.1 General . 33 8.2 Basic data . 34 8.3 Additional data 34 8.4 Test results 34 Annex A (normative) Conversion of measured performance data to specified test conditions for compressors with intermediate pressure port 36 Bibliography . 39 BS EN 1

21、3771-1:2016EN 13771-1:2016 (E) 4 European foreword This document (EN 13771-1:2016) has 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 b

22、y publication of an identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. 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 s

23、hall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13771-1:2003. The main changes with respect to the previous edition are listed below: a) addition of the new Clause 4 “Uncertainty of measurement and test conditions”; b) deletion of the list of m

24、easuring devices; c) addition of two-stage and economized compressors; d) addition of transcritical application; e) addition of test requirements for inverter driven compressors; f) addition of cyclic capacity control; g) addition of the part load conditions according to mandate M/488. This document

25、 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulg

26、aria, 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tu

27、rkey and the United Kingdom. BS EN 13771-1:2016EN 13771-1:2016 (E) 5 1 Scope This European Standard specifies performance test methods for refrigerant compressors. These methods provide sufficiently accurate results for the determination of the refrigerating capacity, power absorbed, refrigerant mas

28、s flow, isentropic efficiency and the coefficient of performance. This European Standard applies only to performance tests where the equipment for testing is available. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensa

29、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 378-2, Refrigerating systems and heat pumps Safety and environmental requirements Part 2: Design, construction,

30、testing, marking and documentation 3 Terms, definitions and symbols For the purposes of this document, the following terms and definitions apply. 3.1 Terms and definitions 3.1.1 refrigerating capacity Q product of the mass flow of refrigerant at the compressor inlet port and the difference between t

31、he specific enthalpy of the refrigerant at the compressor inlet port and the specific enthalpy of fluid entering the evaporator expansion device 3.1.2 subcooling difference between the bubble point temperature of the refrigerant corresponding to the compressor discharge pressure and the temperature

32、of the liquid refrigerant below the bubble point 3.1.3 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 compressor inlet 3.1.4 power absorbed P power demand

33、 to drive the compressor Note 1 to entry: The determination of the power absorbed is specified under Clause 7. 3.1.5 coefficient of performance COPRratio of the refrigerating capacity to the power absorbed Note 1 to entry: Both the above are at the specified test condition. BS EN 13771-1:2016EN 1377

34、1-1:2016 (E) 6 3.1.6 subcritical operation operating condition with discharge pressure level below the critical pressure 3.1.7 transcritical operation operating condition with discharge pressure level above the critical pressure 3.1.8 part load operation for compressors with capacity control mechani

35、sm, part load is interpreted as operation with active capacity control at reduced capacity Note 1 to entry: On/off cycling of the compressor motor is not considered as capacity control. 3.1.9 fluid refrigerant liquid, gas or vapour including the state of appearance close to and above the critical pr

36、essure 3.1.10 evaporating temperature dew temperature corresponding to the suction pressure of the compressor 3.1.11 condensing temperature dew temperature corresponding to the discharge pressure of the compressor 3.1.12 refrigerant mass flow (m) refrigerant mass flow at compressor port 3.1.13 volum

37、etric efficiency (v) ratio of the actual volume rate of flow under compressor inlet conditions, at the requirements specified in 4.3, to the displacement of the compressor Note 1 to entry: Ports, see Table 2, index 1, 2 and 7. 3.1.14 isentropic efficiency (i) ratio of total isentropic compression po

38、wer to the power absorbed Note 1 to entry: Total isentropic compression power is the sum of individual product of mass flow times the isentropic change in enthalpy across the corresponding compression stage. 3.1.15 oil circulation rate (xoil) ratio of the measured oil mass flow to the mass flow of t

39、he circulating oil/refrigerant mixture at the inlet of the compressor Note 1 to entry: Oil circulation rate may differ at other compressor ports. BS EN 13771-1:2016EN 13771-1:2016 (E) 7 3.2 Symbols For the purposes of this document, the symbols of Table 1 apply. Table 1 Symbols Symbol Designation SI

40、 unit c Specific heat capacity of heating and cooling liquid J/(kg K) f Electrical frequency Hz F Heat leakage factor W/K FmMass flow ratio - h Specific enthalpy J/kg hi12Specific enthalpy of refrigerant gas at the compressor outlet (2) having the same entropy as the refrigerant gas at the compresso

41、r inlet (1) for calculation of the isentropic efficiency (specified test conditions) J/kg hi72Specific enthalpy of refrigerant gas at the compressor outlet (2) having the same entropy as the refrigerant gas at the compressor intermediate pressure port (7) for calculation of the isentropic efficiency

42、 (specified test conditions) J/kg n Compressor speed s-1P Power absorbed W p Absolute pressure Pa maRefrigerant mass flow as determined by the test kg/s m Refrigerant mass flow at the specified test conditions kg/s mfMass flow of heating or cooling liquid kg/s moilOil mass flow kg/s mxMass flow of l

43、iquid refrigerant oil mixture kg/s V Refrigerant volume flow m3/s VxVolume flow of refrigerant oil mixture m3/s T Absolute temperature K TecoDifference between fluid outlet of economizer and bubble temperature corresponding to intermediate pressure K t Temperature C tcalMean surface temperature of t

44、he calorimeter C tbBubble point temperature of the refrigerant C tbsBubble point temperature of the secondary fluid C txReference temperature C BS EN 13771-1:2016EN 13771-1:2016 (E) 8 Symbol Designation SI unit ts1Inlet temperature of heating or cooling liquid C ts2Outlet temperature of heating or c

45、ooling liquid C U Electrical voltage V VswTheoretical compressor displacement at declared speed m3/s xoilOil circulation in the refrigerating system, expressed in mass of oil per mass of mixture kg/kg COPRCoefficient of performance iIsentropic efficiency vVolumetric efficiency v Specific volume m3/k

46、g aDensity of refrigerant corresponding to pressure and temperature at which the flow rate is measured kg/m3QHeat input to the calorimeter W QnElectrical input to the heater W Q Refrigerating capacity of the compressor at the specified test conditions W Table 2 Indexes Index Designation a Actual amb

47、 Ambient 1 Refrigerant at the compressor inlet 2 Refrigerant at the compressor outlet 3 Refrigerant at the inlet of the condenser/gas cooler 4 Refrigerant at the outlet of the condenser/gas cooler 5 Refrigerant at the inlet of the expansion device 6 Refrigerant at the outlet of the evaporator 7 Refr

48、igerant at the intermediate pressure port (connection to the compressor) 8 Refrigerant at the inlet to flow meter 9 Refrigerant at the inlet of expansion device C7 10 Liquid outlet of refrigerant at the economizer HX f2 Liquid refrigerant at bubble point corresponding to the pressure at the compress

49、or outlet according to the specified test conditions, for subcritical application or fluid refrigerant at the compressor outlet pressure and the temperature of the gas cooler outlet at the specified test condition BS EN 13771-1:2016EN 13771-1:2016 (E) 9 Index Designation f7 Liquid refrigerant at bubble point corresponding to the pressure at the compressor intermediate pressure port according to the specified test conditions, for subcritical application f10Liquid refrigerant at bubble point corresponding to the pressure at the compres