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BSI 23/30442856 DC 2023

BSI 23/30442856 DC 2023

$13.70

Draft BS ISO 12759-6. Fans — Efficiency classification for fans – Part 6: Calculation of the fan energy index

Published By Publication Date Number of Pages
BSI 2023 45
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PDF Catalog

PDF Pages PDF Title
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
10 3.1.1 General terms
12 3.1.2 Impeller types
13 3.1.3 Fan types
14 3.2 Symbols
15 4 General
4.1 Minimum testable configuration
4.2 FEI pressure basis
4.3 Appurtenances
16 4.4 Fans embedded in other equipment
17 5 Fan energy index
5.1 General
5.2 Reference electrical input power
5.2.1 Reference shaft power
19 5.2.2 Reference transmission efficiency
5.2.3 Reference motor efficiency
5.2.4 Reference motor controller efficiency
5.3 Actual fan electrical input power
21 5.3.1 Measurement of fan electrical input power
5.3.2 Fan electrical input power calculation using ISO 12759-2
5.3.3 Combined fan shaft power with tested motor or motor and controller
23 5.3.4 Fan electrical input power calculation for fans with motors of unknown efficiency
24 6 Use of FEI
6.1 Requirements for use of FEI
6.2 Published FEI values
25 Annex€A (normative) Fan types, test configurations and FEI pressure basis
29 Annex€B (informative) Usage of FEI
33 Annex€C (informative) Fan arrays
35 Annex€D (informative) Practical issues with embedded fans
36 Annex€E (informative) Electrical power measurement — Calculation to other speeds and densities
41 Annex€F (informative) Basis for the reference electrical input power calculations
45 Bibliography

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BSI 23/30442856 DC 2023
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