EN ISO 12759-5:2021

Fans - Efficiency classification for fans - Part 5: Jet fans (ISO 12759-5:2021)

This document establishes a classification of fan efficiency for all jet fan types driven by motors with an electrical input power range from 5,5 kW to 155 kW (and this is likely to be in the size range 500 mm to 1600 mm diameter with motors rated between 5,5 kW and 150 kW from IEC 60034-30-1).
This document is not applicable to jet fans for use in enclosed car parks.
This document can be used by legislators or regulatory bodies for defining future energy saving targets.

Ventilatoren - Effizienzklassifizierung für Ventilatoren - Teil 5: Strahlventilatoren (ISO 12759-5:2021)

Dieses Dokument stellt eine Klassifizierung des Ventilatorwirkungsgrades für Strahlventilatoren jeglicher Bauart auf, die von Motoren mit einer elektrischen Eingangsleistung im Bereich von 5,5 kW bis 155 kW angetrieben werden (dies entspricht in etwa dem Größenbereich von 500 mm bis 1 600 mm Durchmesser und Motoren im Nennleistungsbereich zwischen 5,5 kW und 150 kW nach IEC 60034 30 1).
Dieses Dokument ist nicht anwendbar auf Strahlventilatoren für den Einsatz in geschlossenen Parkhäusern.
Dieses Dokument kann durch Gesetzgeber oder Regulierungsbehörden für die Festlegung zukünftiger Ziele zur Energieeinsparung genutzt werden.

Ventilateurs - Classification du rendement des ventilateurs - Partie 5 : Ventilateurs accélérateurs (ISO 12759-5:2021)

Le présent document établit une classification du rendement de tous les types de ventilateurs entraînés par des moteurs dont la puissance électrique absorbée est comprise entre 5,5 kW et 155 kW (susceptibles de se situer dans une fourchette de 500 mm à 1600 mm de diamètre avec des moteurs d’une puissance nominale comprise entre 5,5 kW et 150 kW selon l’IEC 60034‑30‑1).
Le présent document n'est pas applicable aux ventilateurs accélérateurs utilisés dans les parkings clos.
Le présent document peut être utilisé par les législateurs ou les organismes de réglementation pour définir les futurs objectifs de réduction d'énergie.

Ventilatorji - Klasifikacija učinkovitosti ventilatorjev - 5. del: Potisni ventilatorji (ISO 12759-5:2021)

General Information

• Status: Published
• Publication Date: 13-Jul-2021
• Withdrawal Date: 30-Jan-2022
• ICS: 23.120 - Ventilators. Fans. Air-conditioners
• Technical Committee: CEN/TC 156 - Ventilation for buildings
• Drafting Committee: CEN/TC 156 - Ventilation for buildings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 14-Jul-2021
• Completion Date: 14-Jul-2021
• Ref Project: SIST EN ISO 12759-5:2021 - Fans - Efficiency classification for fans - Part 5: Jet fans (ISO 12759-5:2021)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 12759:2015
Ventilatorji - Klasifikacija učinkovitosti ventilatorjev - 5. del: Potisni ventilatorji
(ISO 12759-5:2021)
Fans - Efficiency classification for fans - Part 5: Jet fans (ISO 12759-5:2021)
Ventilatoren - Effizienzklassifizierung für Ventilatoren - Teil 5: Strahlventilatoren (ISO
12759-5:2021)
Ventilateurs - Classification du rendement des ventilateurs - Partie 5 : Ventilateurs
accélérateurs (ISO 12759-5:2021)
Ta slovenski standard je istoveten z: EN ISO 12759-5:2021
ICS:
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 12759-5
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 23.120
English Version
Fans - Efficiency classification for fans - Part 5: Jet fans
(ISO 12759-5:2021)
Ventilateurs - Classification du rendement des Ventilatoren - Effizienzklassifizierung für Ventilatoren
ventilateurs - Partie 5 : Ventilateurs accélérateurs (ISO - Teil 5: Strahlventilatoren (ISO 12759-5:2021)
12759-5:2021)
This European Standard was approved by CEN on 28 June 2021.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12759-5:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 12759-5:2021) has been prepared by Technical Committee ISO/TC 117 "Fans"
in collaboration with 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 January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN websites.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 12759-5:2021 has been approved by CEN as EN ISO 12759-5:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 12759-5
First edition
2021-06
Fans — Efficiency classification for
fans —
Part 5:
Jet fans
Ventilateurs — Classification du rendement des ventilateurs —
Partie 5: Ventilateurs accélérateurs
Reference number
ISO 12759-5:2021(E)
©
ISO 2021
ISO 12759-5:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 12759-5:2021(E)
Contents  Page
Foreword .iv
Introduction .v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
3.1 Fans . 1
3.2 Quantities . 2
3.3 Fan efficiency . 2
3.4 Fan efficiency grades. 3
4  Fan installation, efficiency and tolerance . 3
4.1 General . 3
4.2 Reference configuration of a jet fan . 3
4.3 Use of installation categories . 3
4.3.1 General. 3
4.3.2 Configuration E installations . 3
5  Ratings. 3
5.1 General . 3
5.2 Jet fans . 4
Annex A (informative) Calculation of jet fan efficiency . 7
Annex B (informative) Determination of efficiency grade for a jet fan . 8
Bibliography . 9
ISO 12759-5:2021(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 117, Fans, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 156, Ventilation for
buildings, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
A list of all parts in the ISO 12759 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

ISO 12759-5:2021(E)
Introduction
The last decade has seen both an escalation in the price and an increasing recognition of the finite life
of many of the fossil fuels currently used. There is also a belief by many that climatic change is due to
increasing levels of carbon dioxide in the atmosphere. This has led to many nations reviewing methods
of energy generation and usage.
To maintain economic growth there is therefore a need to promote energy efficiency. This requires
better selection of equipment by users and thus better design of this equipment by its manufacturers.
Fans of all types are used for ventilation and air conditioning, for process engineering (drying,
pneumatic conveying and combustion air supply) and agriculture. Indeed, the energy use of fans has
been calculated as nearly 20 % of total worldwide energy usage.
The fan industry is of a global nature, with a considerable degree of exporting and licensing. To ensure
that the defining fan performance characteristics are common throughout the world, a series of
International Standards has been developed. It is the belief of the industry that there is now a need for
minimum efficiency standards to be recognized. To encourage their implementation, a classification
system is proposed which incorporates a series of efficiency bands. With improvements in technology
and manufacturing processes, the minimum efficiency levels can be reviewed and increased over time.
This document is specific to jet fans whose efficiency ratings are based on thrust.
The ISO 12759 series describes a number of different procedures to classify the efficiency of a fan or to
apply a minimum efficiency limit (MEL). These procedures are described in:
— ISO 12759-3;
— ISO 12759-4;
— this document (ISO 12759-5
...