AS/NZS 5801:2024
Fans – Performance testing using standardized airways
Standard adopts and modifies ISO 5801:2017, which specifies procedures for the determination of the performance of fans of all types except those designed solely for air circulation, e.g. ceiling fans and table fans.
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AS/NZS 5801:2024 Performance testing using standardized airways (ISO 5801:2017, MOD)
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, abbreviated terms and subscripts
4.1 Symbols and abbreviated terms
4.2 Subscripts
5 General
6 Test configurations
6.1 General
6.2 Category A configuration
6.3 Category B configuration
6.4 Category C configuration
6.5 Category D configuration
6.6 Inlets and outlets
6.7 Fans with significant swirl
6.8 Airways
6.9 Test space
6.10 Leakage
6.11 Test report
7 Carrying out the test
7.1 Working fluid
7.2 Rotational speed
7.3 Steady operation
7.4 Ambient conditions
7.5 Pressure readings
7.6 Test for a specified duty
7.7 Test for a fan characteristic curve
7.8 Operating range
8 Airways for duct simulations
8.1 General
8.2 Common segments at fan inlet (iCS)
8.3 Inlet duct simulation (iDS)
8.4 Common segment at fan outlet (oCS)
8.5 Outlet duct simulation (oDS)
8.6 Long duct (LD)
8.7 Loss allowances for standardized airways
8.7.1 Loss allowances for an inlet common segment (iCS)
8.7.2 Loss allowances for inlet duct simulation (iDS)
8.7.3 Loss allowances for outlet common segments (oCS)
8.7.4 Loss allowances for duct simulation at outlet (oDS)
8.7.5 Loss allowances for long duct (LD)
9 Standardized test chambers
9.1 General
9.2 Pressure tappings
9.3 Flow-settling means
9.3.1 General
9.3.2 Piezometer ring check
9.3.3 Blow through verification test
9.3.4 Outlet chamber reverse flow verification test
9.4 Standardized inlet test chambers (iTC)
9.4.1 Test chambers
9.4.2 Fan under test
9.5 Standardized outlet test chambers (oTC)
9.5.1 Test chambers
9.5.2 Fan under test
10 Various component parts for a laboratory setup
10.1 General
10.2 Variable supply system
10.2.1 General
10.2.2 Throttling device
10.2.3 Auxiliary fan
10.3 Straightener
10.3.1 General
10.3.2 Cell straightener
10.3.3 Star straightener
10.4 Transition parts
10.4.1 General
10.4.2 Rectangular/circular transition
10.4.3 Circular/circular transition
10.4.4 Connection for double-inlet fans
11 Standard test configurations
11.1 Units
11.2 Measuring flow rate
11.3 Standard test configurations A
11.4 Standard test configurations B
11.5 Standard test configurations C
11.6 Standard test configurations D
12 Measurements
12.1 Calibration
12.2 Dimensions and cross-sectional areas
12.2.1 Tolerance on dimensions
12.2.2 Cross-sectional area
12.3 Rotational speed
12.4 Power input
12.4.1 General
12.4.2 Motor input power
12.4.3 Fan shaft power
12.4.4 Impeller power
12.4.5 Transmission systems
12.5 Mass flow rate
12.6 Temperature
12.6.1 General
12.6.2 Accuracy of temperature measurement
12.6.3 Correction for high velocities
12.7 Humidity
12.8 Pressure
12.8.1 Barometers
12.8.2 Manometers
12.8.3 Damping of manometers
12.8.4 Checking of manometers
12.8.5 Position of manometers
12.8.6 Average pressure in an airway
12.8.7 Construction of tappings
12.8.8 Position and connections
12.8.9 Methods of measurement
12.8.10 Checks for compliance
12.8.11 Use of Pitot-static tube
12.9 Air properties
12.9.1 General
12.9.2 Density of air at section x
12.9.3 Air viscosity
12.9.4 Standard air
13 Reference conditions
14 General rules for conversion of test results
14.1 General
14.2 Laws on fan similarity
14.2.1 General
14.2.2 Geometrical similarity
14.2.3 Reynolds number similarity
14.2.4 Mach number and similarity of the velocity triangles
15 Calculations
15.1 Test results
15.1.1 General
15.1.2 Temperature
15.1.3 Pressure
15.1.4 Set of formulae
15.1.5 Simplified sets of formulae, which can be used for v2.ref ≤ 65m/s
15.1.6 Fan pressure
15.1.7 Fan static pressure
15.1.8 Volume flow rate of the fan
15.1.9 Fan air power and efficiency
15.2 Efficiencies
15.2.1 General
15.2.2 Fan static air power and static efficiency
15.3 Conversion rules
15.3.1 General
15.3.2 Shaft power and impeller power
16 Fan characteristic curves
16.1 Methods of plotting
16.2 Characteristic curves at constant speed
16.3 Characteristic curves at inherent speed
16.4 Complete fan characteristic curve
16.5 Test for a specified duty
16.6 Specific fan types
17 Uncertainty analysis
17.1 Principle
17.2 Pre-test and post-test analysis
17.3 Analysis procedure
17.4 Propagation of uncertainties
17.5 Reporting uncertainties
17.6 Maximum allowable uncertainties for measurements
17.7 Maximum allowable uncertainty of results
Annex A (normative) Determination of air flow rate
Annex B (informative) Fan-powered roof exhaust ventilators
Annex C (informative) Chamber leakage test procedure
Annex D (informative) Fan outlet elbow in the case of a non-horizontal discharge axis
Annex E (informative) Input power calculation for driven fans at design point
Annex F (informative) Motor fed from a variable frequency speed device
Annex G (informative) Axial fans without outlet guide vanes
Annex H (informative) Vapour pressure, pv
Annex I (informative) Clearances
Annex J (normative) Polytropic approach for the calculation of pfC from pfTe
Annex K (informative) Examples for test setups
Annex L (informative) Measurement of plenum fans and plug fans
Annex M (informative) Comparison of NEMA methodology for calculation motor efficiency with IEC
Annex N (informative) Report and results of test
Appendix ZZ (normative) Modifications to ISO 5801:2017 for Australia and New Zealand
Bibliography
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AS/NZS 5801:2024 Performance testing using standardized airways (ISO 5801:2017, MOD)
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, abbreviated terms and subscripts
4.1 Symbols and abbreviated terms
4.2 Subscripts
5 General
6 Test configurations
6.1 General
6.2 Category A configuration
6.3 Category B configuration
6.4 Category C configuration
6.5 Category D configuration
6.6 Inlets and outlets
6.7 Fans with significant swirl
6.8 Airways
6.9 Test space
6.10 Leakage
6.11 Test report
7 Carrying out the test
7.1 Working fluid
7.2 Rotational speed
7.3 Steady operation
7.4 Ambient conditions
7.5 Pressure readings
7.6 Test for a specified duty
7.7 Test for a fan characteristic curve
7.8 Operating range
8 Airways for duct simulations
8.1 General
8.2 Common segments at fan inlet (iCS)
8.3 Inlet duct simulation (iDS)
8.4 Common segment at fan outlet (oCS)
8.5 Outlet duct simulation (oDS)
8.6 Long duct (LD)
8.7 Loss allowances for standardized airways
8.7.1 Loss allowances for an inlet common segment (iCS)
8.7.2 Loss allowances for inlet duct simulation (iDS)
8.7.3 Loss allowances for outlet common segments (oCS)
8.7.4 Loss allowances for duct simulation at outlet (oDS)
8.7.5 Loss allowances for long duct (LD)
9 Standardized test chambers
9.1 General
9.2 Pressure tappings
9.3 Flow-settling means
9.3.1 General
9.3.2 Piezometer ring check
9.3.3 Blow through verification test
9.3.4 Outlet chamber reverse flow verification test
9.4 Standardized inlet test chambers (iTC)
9.4.1 Test chambers
9.4.2 Fan under test
9.5 Standardized outlet test chambers (oTC)
9.5.1 Test chambers
9.5.2 Fan under test
10 Various component parts for a laboratory setup
10.1 General
10.2 Variable supply system
10.2.1 General
10.2.2 Throttling device
10.2.3 Auxiliary fan
10.3 Straightener
10.3.1 General
10.3.2 Cell straightener
10.3.3 Star straightener
10.4 Transition parts
10.4.1 General
10.4.2 Rectangular/circular transition
10.4.3 Circular/circular transition
10.4.4 Connection for double-inlet fans
11 Standard test configurations
11.1 Units
11.2 Measuring flow rate
11.3 Standard test configurations A
11.4 Standard test configurations B
11.5 Standard test configurations C
11.6 Standard test configurations D
12 Measurements
12.1 Calibration
12.2 Dimensions and cross-sectional areas
12.2.1 Tolerance on dimensions
12.2.2 Cross-sectional area
12.3 Rotational speed
12.4 Power input
12.4.1 General
12.4.2 Motor input power
12.4.3 Fan shaft power
12.4.4 Impeller power
12.4.5 Transmission systems
12.5 Mass flow rate
12.6 Temperature
12.6.1 General
12.6.2 Accuracy of temperature measurement
12.6.3 Correction for high velocities
12.7 Humidity
12.8 Pressure
12.8.1 Barometers
12.8.2 Manometers
12.8.3 Damping of manometers
12.8.4 Checking of manometers
12.8.5 Position of manometers
12.8.6 Average pressure in an airway
12.8.7 Construction of tappings
12.8.8 Position and connections
12.8.9 Methods of measurement
12.8.10 Checks for compliance
12.8.11 Use of Pitot-static tube
12.9 Air properties
12.9.1 General
12.9.2 Density of air at section x
12.9.3 Air viscosity
12.9.4 Standard air
13 Reference conditions
14 General rules for conversion of test results
14.1 General
14.2 Laws on fan similarity
14.2.1 General
14.2.2 Geometrical similarity
14.2.3 Reynolds number similarity
14.2.4 Mach number and similarity of the velocity triangles
15 Calculations
15.1 Test results
15.1.1 General
15.1.2 Temperature
15.1.3 Pressure
15.1.4 Set of formulae
15.1.5 Simplified sets of formulae, which can be used for v2.ref ≤ 65m/s
15.1.6 Fan pressure
15.1.7 Fan static pressure
15.1.8 Volume flow rate of the fan
15.1.9 Fan air power and efficiency
15.2 Efficiencies
15.2.1 General
15.2.2 Fan static air power and static efficiency
15.3 Conversion rules
15.3.1 General
15.3.2 Shaft power and impeller power
16 Fan characteristic curves
16.1 Methods of plotting
16.2 Characteristic curves at constant speed
16.3 Characteristic curves at inherent speed
16.4 Complete fan characteristic curve
16.5 Test for a specified duty
16.6 Specific fan types
17 Uncertainty analysis
17.1 Principle
17.2 Pre-test and post-test analysis
17.3 Analysis procedure
17.4 Propagation of uncertainties
17.5 Reporting uncertainties
17.6 Maximum allowable uncertainties for measurements
17.7 Maximum allowable uncertainty of results
Annex A (normative) Determination of air flow rate
Annex B (informative) Fan-powered roof exhaust ventilators
Annex C (informative) Chamber leakage test procedure
Annex D (informative) Fan outlet elbow in the case of a non-horizontal discharge axis
Annex E (informative) Input power calculation for driven fans at design point
Annex F (informative) Motor fed from a variable frequency speed device
Annex G (informative) Axial fans without outlet guide vanes
Annex H (informative) Vapour pressure, pv
Annex I (informative) Clearances
Annex J (normative) Polytropic approach for the calculation of pfC from pfTe
Annex K (informative) Examples for test setups
Annex L (informative) Measurement of plenum fans and plug fans
Annex M (informative) Comparison of NEMA methodology for calculation motor efficiency with IEC
Annex N (informative) Report and results of test
Appendix ZZ (normative) Modifications to ISO 5801:2017 for Australia and New Zealand
Bibliography
AS/NZS 5801:2024
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.