SIST EN ISO 5801:2009
(Main)Industrial fans - Performance testing using standardized airways (ISO 5801:2007)
Industrial fans - Performance testing using standardized airways (ISO 5801:2007)
This European Standard deals with the determination of the performance of industrial fans of all types except those designed
solely for air circulation e.g. ceiling fans and table fans.
Estimates of uncertainty of measurement are provided 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.
Einführendes Element - Haupt-Element -rrrrr Ergänzendes Element (ISO 5801:2007)
Diese Internationale Norm behandelt die Leistungsmessung von Ventilatoren aller Art, mit Ausnahme von Ventilatoren, die nur zur Luftumwälzung eingesetzt werden, wie z. B. Wand- oder Tischventilatoren.
Vorgesehen sind Abschätzungen zur Messunsicherheit, und es werden innerhalb festgelegter Grenzen Umrechnungsregeln für die Prüfergebnisse bei Drehzahländerungen, Veränderungen des geförderten Gases und, bei Modellversuchen, der Maße gegeben.
Ventilateurs industriels - Essais aérauliques sur circuits normalisés (ISO 5801:2007)
L'ISO 5801:2007 traite de la détermination des performances des ventilateurs industriels de tous types à l'exception de ceux uniquement conçus pour la circulation de l'air, par exemple les ventilateurs de plafond ou de table.
Des estimations de l'incertitude de mesure sont fournies et des règles pour la conversion, dans des limites spécifiées, des résultats d'essai liés aux variations de vitesse, au gaz transporté, et dans le cas d'essais sur maquette à la taille, sont spécifiées.
Industrijski ventilatorji - Preskušanje lastnosti s standardiziranimi zračnimi cevkami (ISO 5801:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 5801:2009
01-april-2009
,QGXVWULMVNLYHQWLODWRUML3UHVNXãDQMHODVWQRVWLVVWDQGDUGL]LUDQLPL]UDþQLPL
FHYNDPL ,62
Industrial fans - Performance testing using standardized airways (ISO 5801:2007)
Einführendes Element - Haupt-Element -rrrrr Ergänzendes Element (ISO 5801:2007)
Ventilateurs industriels - Essais aérauliques sur circuits normalisés (ISO 5801:2007)
Ta slovenski standard je istoveten z: EN ISO 5801:2008
ICS:
23.120 =UDþQLNL9HWUQLNL.OLPDWVNH Ventilators. Fans. Air-
QDSUDYH conditioners
SIST EN ISO 5801:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 5801:2009
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SIST EN ISO 5801:2009
EUROPEAN STANDARD
EN ISO 5801
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2008
ICS 23.120
English Version
Industrial fans - Performance testing using standardized airways
(ISO 5801:2007 including Cor 1:2008)
Ventilateurs industriels - Essais aérauliques sur circuits
normalisés (ISO 5801:2007, Cor 1:2008 inclus)
This European Standard was approved by CEN on 2 October 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5801:2008: E
worldwide for CEN national Members.
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SIST EN ISO 5801:2009
EN ISO 5801:2008 (E)
Contents Page
Foreword.3
2
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SIST EN ISO 5801:2009
EN ISO 5801:2008 (E)
Foreword
The text of ISO 5801:2007 including Cor 1:2008 has been prepared by Technical Committee ISO/TC 117
“Industrial fans” of the International Organization for Standardization (ISO) and has been taken over as EN
ISO 5801:2008 by Technical Committee CEN/TC 156 “Ventilation for buildings” the secretariat of which is held
by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2009, and conflicting national standards shall be withdrawn at the
latest by April 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 5801:2007 including Cor 1:2008 has been approved by CEN as a EN ISO 5801:2008 without
any modification.
3
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SIST EN ISO 5801:2009
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SIST EN ISO 5801:2009
INTERNATIONAL ISO
STANDARD 5801
Second edition
2007-12-15
Industrial fans — Performance testing
using standardized airways
Ventilateurs industriels — Essais aérauliques sur circuits normalisés
Reference number
ISO 5801:2007(E)
©
ISO 2007
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SIST EN ISO 5801:2009
ISO 5801:2007(E)
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ii © ISO 2007 – All rights reserved
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SIST EN ISO 5801:2009
ISO 5801:2007(E)
Contents Page
Foreword. vii
Introduction . viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols and units. 16
4.1 Symbols . 16
4.2 Subscripts . 19
5 General. 19
6 Instruments for pressure measurement. 20
6.1 Barometers . 20
6.2 Manometers. 21
6.3 Damping of manometers. 21
6.4 Checking of manometers. 21
6.5 Position of manometers. 22
7 Determination of average pressure in an airway. 22
7.1 Methods of measurement . 22
7.2 Use of wall tappings . 22
7.3 Construction of tappings . 22
7.4 Position and connections . 23
7.5 Checks for compliance. 23
7.6 Use of Pitot-static tube. 23
8 Measurement of temperature . 24
8.1 Thermometers . 24
8.2 Thermometer location . 24
8.3 Humidity. 24
9 Measurement of rotational speed . 25
9.1 Fan shaft speed. 25
9.2 Acceptable instruments . 25
10 Determination of power input. 25
10.1 Measurement accuracy . 25
10.2 Fan shaft power . 25
10.3 Determination of fan shaft power by electrical measurement . 25
10.4 Impeller power. 26
10.5 Transmission systems . 26
11 Measurement of dimensions and determination of areas. 26
11.1 Flow-measurement devices. 26
11.2 Tolerance on dimensions . 26
11.3 Determination of cross-sectional area . 27
12 Determination of air density, humid gas constant and viscosity . 27
12.1 Density of air in the test enclosure at section x . 27
12.2 Determination of vapour pressure . 28
12.3 Determination of air viscosity . 30
13 Determination of flow rate . 31
13.1 General. 31
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SIST EN ISO 5801:2009
ISO 5801:2007(E)
13.2 In-line flowmeters (standard primary devices). 31
13.3 Traverse methods . 32
14 Calculation of test results . 34
14.1 General . 34
14.2 Units . 34
14.3 Temperature. 34
14.4 Mach number and reference conditions. 36
14.5 Fan pressure. 40
14.6 Calculation of stagnation pressure at a reference section of the fan from gauge pressure,
p , measured at a section x of the test duct . 43
ex
14.7 Inlet volume flow rate . 44
14.8 Fan air power and efficiency. 44
15 Rules for conversion of test results. 52
15.1 Laws on fan similarity. 52
15.2 Conversion rules. 54
16 Fan characteristic curves. 57
16.1 General . 57
16.2 Methods of plotting. 58
16.3 Characteristic curves at constant speed. 58
16.4 Characteristic curves at inherent speed. 58
16.5 Characteristic curves for adjustable-duty fan. 59
16.6 Complete fan characteristic curve . 60
16.7 Test for a specified duty. 61
17 Uncertainty analysis . 62
17.1 Principle . 62
17.2 Pre-test and post-test analysis. 62
17.3 Analysis procedure. 62
17.4 Propagation of uncertainties . 62
17.5 Reporting uncertainties. 63
17.6 Maximum allowable uncertainties measurement . 63
17.7 Maximum allowable uncertainty of results. 64
18 Selection of test method . 65
18.1 Classification. 65
18.2 Installation categories . 65
18.3 Test report. 65
18.4 User installations . 66
18.5 Alternative methods. 66
18.6 Duct simulation . 66
19 Installation of fan and test airways . 66
19.1 Inlets and outlets. 66
19.2 Airways. 66
19.3 Test enclosure. 67
19.4 Matching fan and airway . 67
19.5 Outlet area. 67
20 Carrying out the test . 67
20.1 Working fluid . 67
20.2 Rotational speed . 67
20.3 Steady operation . 67
20.4 Ambient conditions. 68
20.5 Pressure readings. 68
20.6 Tests for a specified duty. 68
20.7 Tests for a fan characteristic curve . 68
20.8 Operating range . 68
21 Determination of flow rate. 68
21.1 Multiple nozzle. 68
21.2 Conical or bellmouth inlet. 68
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SIST EN ISO 5801:2009
ISO 5801:2007(E)
21.3 Orifice plate . 68
21.4 Pilot-static tube traverse (see ISO 3966 and ISO 5221). 69
22 Determination of flow rate using multiple nozzles. 69
22.1 Installation . 69
22.2 Geometric form . 69
22.3 Inlet zone . 70
22.4 Multiple-nozzle characteristics. 70
22.5 Uncertainty . 72
23 Determination of flow rate using a conical or bellmouth inlet. 73
23.1 Geometric form . 73
23.2 Screen loading . 74
23.3 Inlet zone . 75
23.4 Conical inlet performance. 75
23.5 Bellmouth inlet performance . 75
23.6 Uncertainties . 77
24 Determination of flow rate using an orifice plate . 77
24.1 Installation . 77
24.2 Orifice plate . 77
24.3 Ducts . 81
24.4 Pressure tappings. 81
24.5 Calculation of mass flow rate . 81
24.6 Reynolds number. 82
24.7 In-duct orifice with D and D/2 taps [see Figure 20 a) and ISO 5167-1]. 82
24.8 Outlet orifice with wall tappings [see Figure 20 c) and e)] . 86
25 Determination of flow rate using a Pitot-static tube traverse . 88
25.1 General. 88
25.2 Pitot-static tube. 88
25.3 Limits of air velocity . 93
25.4 Location of measurement points . 93
25.5 Determination of flow rate . 94
25.6 Flow rate coefficient . 94
25.7 Uncertainty of measurement . 95
26 Installation and setup categories. 95
26.1 Category A: free inlet and free outlet. 95
26.2 Category B: free inlet and ducted outlet . 95
26.3 Category C: ducted inlet and free outlet . 96
26.4 Category D: ducted inlet and ducted outlet . 96
26.5 Test installation type . 96
27 Flow straighteners. 96
27.1 Types of straightener . 97
27.2 Rules for use of a straightener. 98
28 Common-segment airways for ducted fan installations. 99
28.1 Common segments. 99
28.2 Common segment at fan outlet. 99
28.3 Common segment at fan inlet . 101
28.4 Outlet duct simulation. 103
28.5 Inlet duct simulation. 103
28.6 Loss allowances for standardized airways. 104
29 Standardized test chambers. 107
29.1 Test chamber. 107
29.2 Variable supply and exhaust systems. 112
29.3 Standardized inlet test chambers . 112
29.4 Standardized outlet test chambers . 115
30 Standard methods with test chambers — Category A installations . 118
30.1 Types of fan setup . 118
© ISO 2007 – All rights reserved v
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