EN ISO 5801:2017

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, abbreviated terms and subscripts
5 General
6 Test configurations
7 Carrying out the test
8 Airways for duct simulations
9 Standardized test chambers
10 Various component parts for a laboratory setup
11 Standard test configurations
12 Measurements
13 Reference conditions
14 General rules for conversion of test results
15 Calculations
16 Fan characteristic curves
17 Uncertainty analysis
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, p[v]
Annex I (informative) - Clearances
Annex J (normative) - Polytropic approach for the
        calculation of p[fC] from p[fTe]
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
Bibliography

ISO 5801:2017 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. Testing of jet fans is described in ISO 13350.ISO 5801:2017 provides estimates of uncertainty of measurement and rules for the conversion, within specified limits, of test results for changes in speed, gas handled and, in the case of model tests, size are given.