BS EN 13771-1:2016:2017 Edition
$167.15
Compressors and condensing units for refrigeration. Performance testing and test methods – Refrigerant compressors
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 44 |
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 mass flow, isentropic efficiency and the coefficient of performance.
This European Standard applies only to performance tests where the equipment for testing is available.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 6 | European foreword |
| 7 | 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 9 | 3.2 Symbols Table 1 — Symbols |
| 10 | Table 2 — Indexes |
| 11 | 3.3 Refrigerant circuit state points |
| 12 | Figure 1 — Refrigerant circuit 4 Uncertainty of measurement and test conditions 4.1 Uncertainty of performance data 4.2 Uncertainty of measurement |
| 13 | 4.3 Test conditions |
| 14 | Table 3 — Specified test conditions and the allowable deviations |
| 15 | 5 General requirements 5.1 Calculation methods 5.1.1 Principle 5.1.2 Specific enthalpy 5.1.3 Refrigerant mass flow 5.1.4 Power absorbed 5.1.5 Basic formulas 5.1.5.1 Mass flow |
| 16 | 5.1.5.2 Compressor refrigerating capacity |
| 17 | 5.2 Requirements for the selection of test method 5.2.1 General 5.2.2 Second concurrent test 5.3 Test period 5.3.1 General 5.3.2 Steady-state conditions |
| 18 | 5.3.3 Recording of measured data 5.4 Pressure and temperature measuring points 5.5 Oil circulation 5.6 Fractionation 5.7 Calibration of calorimeters for methods A, B and C 5.7.1 Heat leakage |
| 19 | 5.7.2 Reference temperature 5.7.3 Calibration procedure 5.8 Source of refrigerant data 6 Test methods 6.1 General 6.2 List of test methods 6.2.1 Calorimetric methods |
| 20 | 6.2.2 Flow meter methods 6.3 Method A: Secondary fluid calorimeter on the suction side 6.3.1 Description |
| 21 | Figure 2 — Secondary fluid calorimeter, Method A |
| 22 | Figure 3 — Secondary fluid calorimeters, method A for compressor with intermediate pressure inlet |
| 23 | 6.3.2 Calibration 6.3.3 Test procedure 6.3.4 Requirements 6.3.5 Additional information 6.4 Determination of refrigerant mass flow 6.5 Method B: Dry system refrigerant calorimeter on the suction side 6.5.1 Description |
| 24 | Figure 4 — Dry system refrigerant calorimeter, method B |
| 25 | Figure 5 — Dry system refrigerant calorimeter, compressor with intermediate pressure inlet |
| 26 | Figure 6 — Dry system refrigerant calorimeter, method B for compressor with factory assembled economizer HX |
| 27 | 6.5.2 Calibration 6.5.3 Test procedure 6.5.4 Requirements 6.5.5 Additional information 6.5.6 Determination of refrigerant mass flow |
| 28 | 6.6 Method C: Water-cooled condenser/gas cooler on the discharge side 6.6.1 Description |
| 29 | Figure 7 — Water-cooled condenser/gas cooler, method C |
| 30 | 6.6.2 Calibration 6.6.3 Test procedure 6.6.4 Requirements 6.6.5 Additional information 6.6.6 Determination of refrigerant mass flow 6.7 Method D: Refrigerant gas flow meter 6.7.1 Description |
| 31 | Figure 8 — Refrigerant gas flow meters, method D1 or D2 |
| 32 | Figure 9 — Refrigerant gas flow meter, method D for compressors with intermediate pressure inlet |
| 33 | 6.7.2 Requirements 6.7.3 Additional information 6.7.4 Determination of refrigerant mass flow 6.8 Method E: Refrigerant flow meter in the liquid line 6.8.1 General 6.8.2 Description |
| 34 | Figure 10 — Refrigerant flow meter, method E for single stage subcritical compression 6.8.3 Test procedure 6.8.4 Requirements 6.8.5 Additional information |
| 35 | 6.8.6 Determination of the refrigerant and oil mass flow 6.8.6.1 The refrigerant mass flow, as determined by the test, is given by the following formulas 6.8.6.2 The following applies to the oil mass flow 7 Determination of the power absorbed by the compressor 7.1 Measurement 7.1.1 General 7.1.2 Measurement for externally driven compressors 7.1.3 Measurement for motor compressors 7.2 Calculation 8 Test report 8.1 General |
| 36 | 8.2 Basic data 8.3 Additional data 8.4 Test results |
| 38 | Annex A (normative) Conversion of measured performance data to specified test conditions for compressors with intermediate pressure port Figure A.1 — Dry system refrigerant calorimeter, method B for compressor with factory assembled economizer HX |
| 41 | Bibliography |
