AS 2936-1987

1 - AS 2936-1987 SAA FAN TEST CODE
4 - PREFACE
5 - CONTENTS
7 - FOREWORD
9 - SECTION 1. SCOPE AND GENERAL
9 - 1.1 SCOPE.
9 - 1.2 APPLICATION.
9 - 1.3 REFERENCED DOCUMENTS.
9 - 1.4 DEFINITIONS.
9 - 1.4.1 Air power
9 - 1.4.2 Fan
9 - 1.4.3 Fan characteristic curve
9 - 1.4.4 Fan duty
9 - 1.4.5 Fan efficiency
9 - 1.4.6 Fan inlet total pressure
10 - 1.4.7 Fan overall efficiency
10 - 1.4.8 Fan stall
10 - 1.4.9 Fan total pressure
10 - 1.4.10 Fan velocity pressure
10 - 1.4.11 Fan volume flow rate
10 - 1.4.12 Fan / transmission efficiency
10 - 1.4.13 Geometrically similar test
10 - 1.4.14 Impeller shaft power
10 - 1.4.15 Motor input power
10 - 1.4.16 Motor output power
10 - 1.4.17 Specific test
10 - 1.4.18 Standard air (fans
10 - 1.4.19 Static pressure
10 - 1.4.20 Total pressure
10 - 1.4.21 Type test
10 - 1.4.22 Velocity pressure
10 - 1.5 QUANTITIES, SYMBOLS, AND UNITS.
14 - SECTION 2. MEASURING EQUIPMENT AND METHODS
14 - 2.1 ATMOSPHERIC PRESSURE.
14 - 2.2 TEMPERATURE.
14 - 2.3 HUMIDITY.
14 - 2.4 AIR DENSITY.
14 - 2.5 AIR PRESSURE.
14 - 2.6 PITOT-STATIC TUBES.
14 - 2.7 STATIC PRESSURE TAPPINGS.
14 - 2.8 NOZZLES.
14 - 2.9 ORIFICE PLATES.
15 - 2.10 CONICAL INLETS.
15 - 2.11 YAWMETERS.
15 - 2.12 STATIC PRESSURE TUBES.
15 - 2.13 DYNAMOMETERS.
15 - 2.14 ELECTRICAL INSTRUMENTS.
15 - 2.15 POWER CORRECTION FOR TEST DRIVE SYSTEM
16 - 2.16 SPEED MEASUREMENT.
16 - 2.17 TEST CHAMBERS.
16 - 2.18 MEASUREMENT DUCTS.
16 - 2.19 TRANSFORMATION PIECES.
16 - 2.20 MEASUREMENT DUCT ARRANGEMENTS.
30 - SECTION 3. PREPARATION FOR TEST
30 - 3.1 SCOPE OF SECTION.
30 - 3.2 ASSESS VALIDITY OF TEST.
30 - 3.3 CLASSIFY FAN APPLICATION.
30 - 3.4 ASSEMBLE AND CHECK EQUIPMENT.
30 - 3.4.1 Selection of equipment.
30 - 3.4.2 Additions, alterations, omissions.
30 - 3.4.3 Fairings, casing extensions.
30 - 3.4.4 Assembly joints.
30 - 3.4.5 Driving motor.
30 - 3.4.6 Dynamometer.
30 - 3.4.7 Instruments.
30 - 3.4.8 Attachment of instruments.
30 - 3.4.9 Static pressure tappings.
30 - 3.5 PRELIMINARY AERODYNAMIC CHECKS.
30 - 3.5.1 Reynolds number.
31 - 3.5.2 Pressure.
31 - 3.5.3 Inlet flow.
32 - SECTION 4. TEST PROCEDURES
32 - 4.1 SCOPE OF SECTION.
32 - 4.2 PREPARATION.
32 - 4.3 SELECTION OF DUTY POINTS.
32 - 4.4 TEST PROCEDURE.
33 - SECTION 5. REDUCTION OF TEST DATA
33 - 5.1 AMBIENT AIR DENSITY.
33 - 5.2 VOLUME FLOWRATE AND FAN PRESSURE.
33 - 5.3 MEAN SWIRL PROPERTIES.
33 - 5.4 MOTOR INPUT POWER.
33 - 5.5 MOTOR OUTPUT POWER.
33 - 5.6 IMPELLER SHAFT POWER.
33 - 5.7 AIR POWER.
33 - 5.8 FAN OVERALL EFFICIENCY.
33 - 5.9 FAN/TRANSMISSION EFFICIENCY.
33 - 5.10 FAN EFFICIENCY.
33 - 5.11 FLOW COMPRESSIBILITY.
38 - SECTION 6. CORRECTIONS, DATA CONVERSION, AND PRESENTATION OF RESULTS
38 - 6.1 CORRECTIONS TO SPECIFIED OR STANDARD CONDITIONS.
38 - 6.1.1 Fan laws.
38 - 6.1.2 Specific tests.
38 - 6.1.3 Type tests.
38 - 6.1.4 Geometrically similar fan tests.
38 - 6.2 NON-DIMENSIONAL COEFFICIENTS.
38 - 6.3 PRESENTATION OF RESULTS.
38 - 6.4 CONVENTIONS FOR THE APPROXIMATE CONVERSION OF FAN PRESSURE DATA.
38 - 6.4.1 Fans with measured mean swirl less than 10 degrees
39 - 6.4.2 Fans with measured mean swirl in excess of 10 degrees
39 - 6.4.3 Converting fan total pressure to fan static
45 - APPENDIX A - FLOW QUALITY FACTORS
45 - A1 SCOPE.
45 - A2 INLET FLOW QUALITY.
45 - A3 OUTLET FLOW QUALITY.
47 - APPENDIX B - CORRECTIONS FOR COMPRESSIBILITY
47 - B1 INTRODUCTION.
47 - B2 DETERMINATION OF CORRECTIONS.
50 - APPENDIX C - REYNOLDS NUMBER CONSIDERATIONS
51 - APPENDIX D - LOG-LINEAR MEASUREMENT TECHNIQUE
52 - APPENDIX E - ERROR ESTIMATION AND TOLERANCES
52 - E1 INTRODUCTION.
52 - E2 ERROR ESTIMATION.
52 - E3 TOLERANCES.