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.

Describes alternative test procedures for determining the performance characteristics of fans that are primarily intended for industrial applications. The selection of the most suitable procedure depends on the type of fan, the intended method of use, and the degree of accuracy required. It deals only with laboratory or bench testing. Field testing after installation is not covered.

This Standard describes procedures for determining the performance characteristics of axial flow, radial flow, mixed flow, or tangential flow fans that are primarily intended forindustrial applications. Alternative procedures that are dependent on fan types are provided. The Standard deals only with testing in a laboratory or on a test bench; it does not deal with the testing of a fan after it has been installed.

Under Revision see DR 02472