EN ISO 5802:2008

SLOVENSKI STANDARD
01-april-2009
Industrijski ventilatorji - Preskušanje lastnosti na mestu (ISO 5802:2001)
Industrial fans - Performance testing in situ (ISO 5802:2001)
Ventilateurs industriels - Essai de performance in situ (ISO 5802:2001)
Ta slovenski standard je istoveten z: EN ISO 5802:2008
ICS:
23.120 =UDþQLNL9HWUQLNL.OLPDWVNH Ventilators. Fans. Air-
QDSUDYH conditioners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 5802
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2008
ICS 23.120
English Version
Industrial fans - Performance testing in situ (ISO 5802:2001)
Ventilateurs industriels - Essai de performance in situ (ISO
5802:2001)
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 5802:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3

Foreword
The text of ISO 5802:2001 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 5802:2008 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 5802:2001 has been approved by CEN as a EN ISO 5802:2008 without any modification.

INTERNATIONAL ISO
STANDARD 5802
First edition
2001-07-15
Industrial fans — Performance testing
in situ
Ventilateurs industriels — Essai de fonctionnement in situ
Reference number
ISO 5802:2001(E)
©
ISO 2001
ISO 5802:2001(E)
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ii © ISO 2001 – All rights reserved

ISO 5802:2001(E)
Contents Page
Foreword.v
Introduction.vi
1 Scope .1
2 Normative references .1
3 Terms, definitions and symbols.1
3.1 Terms and definitions .1
3.2 Symbols .14
4 Quantities to be measured.18
5 General conditions and procedures concerning in situ tests .18
5.1 General recommendations .18
5.2 Selection of test point when only the system resistance can be varied.18
5.3 Fans fitted with adjustment devices.19
5.4 System throttling devices allowing the system resistance to be altered .19
5.5 Selection of the test point when the system resistance cannot be varied.19
5.6 When correction of the coefficient deduced from the test is not necessary .20
6 Instrumentation.20
6.1 Instrumentation for measurement of pressure.20
6.2 Measurement of air velocity .21
6.3 Measurement of temperature .23
6.4 Determination of density.24
6.5 Measurement of rotational speed .25
7 Determination of fan pressure.25
7.1 Location of pressure measurement plane .25
7.2 Measurement of fan pressure.27
8 Determination of flow rate .36
8.1 Choice of measuring method .36
8.2 Choice of measuring section.36
8.3 Determination of flowrate using differential pressure devices.38
8.4 Determination of flowrate by velocity area methods .38
9 Determination of power.54
9.1 Definition of performance characteristics relating to the power of a fan.54
9.2 Losses during transmission of power from the motor to the impeller .56
9.3 Methods for determination of power .56
9.4 Measuring instruments .59
9.5 Precautions to be taken during in situ tests.59
10 Uncertainty associated with the determination of fan performance.59
10.1 General.59
10.2 Performance errors .60
10.3 Uncertainty of measurement .60
10.4 Specified uncertainties .60
10.5 Analysis of uncertainty .60
Annex A (normative) Position of exploration lines for a marginal wall profile compatible with a general
power law.67
Annex B (normative) Determination of the position of the marginal exploration lines in cases not
covered by annex A.71
ISO 5802:2001(E)
Annex C (normative) Minimum straight lengths required upstream and downstream of the differential
pressure devices (DP device) used for flow measurement.74
Annex D (normative) Loss allowance for straight, smooth ducts and standardized airways .82
Annex E (normative) Rotating vane anemometer calibration.84
Bibliography .86
iv © ISO 2001 – All rights reserved

ISO 5802:2001(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 5802 was prepared by Technical Committee ISO/TC 117, Industrial fans.
Annexes A to E form a normative part of this International Standard.
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