prEN ISO 29461-1
(Main)Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements (ISO/DIS 29461-1:2020)
Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements (ISO/DIS 29461-1:2020)
Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 1: Statische Filterelemente (ISO/DIS 29461-1:2020)
ISO 29461 legt Prüfverfahren für die Ermittlung der Leistung von Partikelluftfiltern für den Einsatz in Ansaugfiltersystemen für Rotationsmaschinen, z. B. stationäre Gasturbinen, Kompressoren und andere stationäre Verbrennungskraftmaschinen, fest. Dies gilt für Luftfilter mit einem Wirkungsgrad von 85 % oder mehr für die MPPS (EPA- und HEPA-Filter), die nach ISO 29463 Teil 1 bis 5 geprüft werden, und Filter mit einem geringeren Wirkungsgrad, deren Prüfung nach ISO 16890 Teil 1 bis 4 erfolgt. Die in der Normenreihe ISO 16890 und der Normenreihe ISO 29463 beschriebenen Verfahren werden durch diesen Teil von ISO 29461 angewendet und auf Luftfilter erweitert, die mit Durchflussraten im Bereich von 0,24 m3/s (850 m3/h, 500 ft3/min) bis 2,36 m3/s (8 500 m3/h, 5 000 ft3/min) betrieben werden.
Dieser Teil von ISO 29461 bezieht sich auf statische (Barriere-) Filtersysteme, kann aber auch unter geeigneten Umständen auf andere Filtertypen und Systeme angewendet werden, z. B. um den Ausgangswirkungsgrad von reinigbaren und Oberflächenfiltern zu bewerten.
Die nach diesem Teil der ISO 29461 Norm für die Leistung ermittelten Ergebnisse können nicht unmittelbar zur quantitativen Vorhersage der Leistung bezogen auf Wirkungsgrad und Lebensdauer für den jeweiligen Anwendungsfall des Filters verwendet werden. Andere Faktoren, die sich auf die Leistung auswirken und berücksichtigt werden müssen, werden in den Anhängen beschrieben.
Systèmes de filtration d'air d'admission pour machines tournantes - Méthodes d'essai - Partie 1: Éléments filtrants pour filtres statiques (ISO/DIS 29461-1:2020)
Zračni filtrski sistemi rotacijskih strojev - Preskusne metode - 1. del: Statični filtrski elementi (ISO/DIS 29461-1:2020)
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN ISO 29461-1:2021
01-januar-2021
Zračni filtrski sistemi rotacijskih strojev - Preskusne metode - 1. del: Statični
filtrski elementi (ISO/DIS 29461-1:2020)Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter
elements (ISO/DIS 29461-1:2020)Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 1: Statische
Filterelemente (ISO/DIS 29461-1:2020)
Systèmes de filtration d'air d'admission pour machines tournantes - Méthodes d'essai -
Partie 1: Éléments filtrants pour filtres statiques (ISO/DIS 29461-1:2020)Ta slovenski standard je istoveten z: prEN ISO 29461-1
ICS:
29.160.99 Drugi standardi v zvezi z Other standards related to
rotacijskimi stroji rotating machinery
oSIST prEN ISO 29461-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 29461-1:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 29461-1
ISO/TC 142 Secretariat: UNI
Voting begins on: Voting terminates on:
2020-10-26 2021-01-18
Air intake filter systems for rotary machinery — Test
methods —
Part 1:
Static filter elements
Systèmes de filtration d'air d'admission pour machines tournantes — Méthodes d'essai —
Partie 1: Éléments filtrants pour filtres statiquesICS: 29.160.99
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
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BEING ACCEPTABLE FOR INDUSTRIAL,
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BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 29461-1:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
Introduction ..................................................................................................................................................................................................................................v
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Terms and definitions ..................................................................................................................................................................................... 2
4 Symbols and abbreviated terms ........................................................................................................................................................... 2
5 General requirements ..................................................................................................................................................................................... 3
6 Testing and classification of filter efficiencies ...................................................................................................................... 3
7 Determination of the air flow resistance versus the mass of test dust captured ..............................5
8 Conditioning method to determine the minimum fractional test efficiency .........................................5
9 Reporting ...................................................................................................................................................................................................................... 6
Annex A (normative) Net area calculation ..................................................................................................................................................... 8
Bibliography .............................................................................................................................................................................................................................16
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(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 142, Cleaning equipment for air and
other gases.This second edition cancels and replaces the first edition (ISO 29461-1:2013), which has been technically
revised.The main changes compared to the previous edition are as follows:
— New test method, referring to ISO 16890 and ISO 29463
— A classification table
— Deletion of Annex A, B, C and D
A list of all parts in the ISO 29461 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 2020 – All rights reserved
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(E)
Introduction
In rotating machinery applications, the filtering systems, typically a set of filter elements arranged in
a suitable manner, are an important part of the whole turbine/compressor system. The development
of turbine machinery used for energy production or others has led to more sophisticated equipment
and therefore the importance of good protection of these systems has become more important in the
recent years. It is known that particulate contamination can deteriorate a turbine power system quite
substantially if not taken care of.This event is often described as “erosion”, “fouling” and “hot corrosion” where salt and other corrosive
particles are known as potential problems. Other particulate matters may also cause significant
reduction of efficiency of the systems. It is important to understand that air filter devices in such systems
are located in various environmental conditions. The range of climate and particulate contamination is
very wide, ranging from deserts to humid rain forests to arctic environments. The requirements on
these filter systems are obviously different depending on where they will be operating.
ISO 29461 has based the performance of the air intake filter systems not only upon heavy dust
collection but also particulate efficiency in a size range that is considered to be the problematic area for
these applications. Both ultra-fine and fine particles, as well as larger particles, should be considered
when evaluating turbine fouling. In typical outdoor air, ultra-fine and fine particles in the size range
from 0,01 μm to 1 μm contribute to > 99 % of the number concentration and to > 90 % of the surface
contamination. The majority of the mass normally comes from larger particles (>1,0 μm).
Turbo-machinery filters comprise a wide range of products from filters for very coarse particles to
filters for very fine, sub-micron particles. The range of products varies from depth to surface loading
systems, which can be regenerated e.g. by pulse cleaning. The filters and the systems have to withstand
a wide temperature and humidity range, very low to very high dust concentration and mechanical
stress. The shape of products existing today can be of many different types and have different functions
such as droplet separators, coalescing products, filter pads, metal filters, inertial filters, filter cells,
bag filters, panel-type, cleanable and depth loading filter cartridges and pleated media surface filter
elements.ISO 29461 series of standards will provide a way to compare these products in a similar way and
define what criteria are important for air filter intake systems for rotary machinery performance
protection. The performance of products in this broad range must be compared in a good manner.
Comparing different filters and filter types must be done with respect to the operating conditions they
finally will be used in. For instance, if a filter or a filter system is meant to operate in an extreme, very
dusty environment, the real particulate efficiency of such a filter cannot be predicted because the dust
loading of the filter plays an important role. A further part of ISO 29461 will address the performance
of cleanable and surface loading filters. Filters in turbo-machinery applications can also face very harsh
operating conditions such as high air flow rates or water and salt ingress. Further parts of ISO 29461
will address the performance of filters under such harsh conditions.© ISO 2020 – All rights reserved v
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oSIST prEN ISO 29461-1:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 29461-1:2020(E)
Air intake filter systems for rotary machinery — Test
methods —
Part 1:
Static filter elements
1 Scope
ISO 29461 specifies methods and procedures for determining the performance of particulate air filters
used in air intake filter systems for rotary machinery such as stationary gas turbines, compressors and
other stationary internal combustion engines. It applies to air filters with an efficiency of 85 % or more
for the MPPS (EPA and HEPA filters) which are tested according to ISO 29463 part 1 to 5 and filters with
a lower efficiency which are tested according to ISO 16890 part 1 to 4. The procedures described in
both, the ISO 16890 series and the ISO 29463 series, are applied and extended by this part of ISO 29461
3 3 3to air filters which operate at flow rates within the range 0,24 m /s (850 m /h, 500 ft /min) up to
3 3 32,36 m /s (8500 m /h, 5000 ft /min).
This part of ISO 29461 refers to static (barrier) filter systems but can also be applied to other filter
types and systems in appropriate circumstances, for example to evaluate the initial efficiency of
cleanable and surface loading filters.The performance results obtained in accordance with this part of ISO 29461 cannot be quantitatively
applied (by themselves) to predict performance in service with regard to efficiency and lifetime. Other
factors influencing performance to be taken into account are described in the annexes.
2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 15957, Test dusts for evaluating air cleaning equipmentISO 16890-1, Air filters for general ventilation — Part 1: Technical specifications, requirements and
classification system based upon particulate matter efficiency (ePM)ISO 16890-2, Air filters for general ventilation — Part 2: Measurement of fractional efficiency and
resistance to air flowISO 16890-3, Air filters for general ventilation — Part 3: Determination of the gravimetric efficiency and
the air flow resistance versus the mass of test dust capturedISO 16890-4, Air filters for general ventilation — Part 4: Conditioning method to determine the minimum
fractional test efficiencyISO 29463-1, High efficiency filters and filter media for removing particles from air — Part 1: Classification,
performance, testing and markingISO 29463-3, High-efficiency filters and filter media for removing particles in air — Part 3: Testing flat
sheet filter mediaISO 29463-4, High-efficiency filters and filter media for removing particles in air — Part 4: Test method for
determining leakage of filter elements-Scan method© ISO 2020 – All rights reserved 1
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(E)
ISO 29463-5, High-efficiency filters and filter media for removing particles in air — Part 5: Test method for
filter elementsISO 29464:2017, Cleaning of air and other gases — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 29464 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp— IEC Electropedia: available at http:// www .electropedia .org/
3.1
coarse filter
filtration device with particle removal efficiency ePM < 50 % in the PM10 particle range
Note 1 to entry: as per ISO 16890-1.[SOURCE: ISO 29464:2017, 3.2.74, modified — Note 1 to entry has been added.]
3.2
efficient particulate air filter
EPA filter
filters with performance complying with requirements of filter class ISO T10 – ISO T12 as per this
documentNote 1 to entry: EPA filters cannot be and shall not be leak tested.
3.3
initial gravimetric arrestance
100
ratio of the mass of a standard test dust retained by the filter to the mass of dust fed after the first 100
g of dust loadNote 1 to entry: This measure is expressed as a weight percentage.
3.4
high efficient particulate air filter
HEPA filter
filters with performance complying with requirements of filter class ISO 35 H – ISO 45 H as per
ISO 29463-1[SOURCE: ISO 29464:2017, 3.2.84]
3.5
particulate matter efficiency
ePMx
efficiency of an air cleaning device to reduce the mass concentration of particles with an optical
diameter between 0,3 µm and x µm[SOURCE: ISO 29464:2017, 3.2.140]
4 Symbols and abbreviated terms
For the application of this document, the following symbols and abbreviated terms apply:
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oSIST prEN ISO 29461-1:2021
ISO/DIS 29461-1:2020(E)
A Initial gravimetric arrestance, %
100
ePM Minimum efficiency value with x = 1 µm, 2,5 µm or 10 µm of the conditioned filter element,
x, min% (see ISO 16890-1)
ePM Efficiency with x = 1 µm, 2,5 µm or 10 µm, % (see ISO 16890-1)
ISO International Organization for Standardization
MPPS Most penetrating particle size
5 General requirements
Static filter systems normally use multiple stages of coarse, fine and optional also EPA or HEPA filter
elements to protect the machinery. The scope of this part of ISO 29461 includes methods for performance
testing of individual filter elements. It does not include methods for the direct measurement of
the performance of entire systems as installed in service except in cases where they can meet the
qualification criteria for the test assembly.6 Testing and classification of filter efficiencies
Filters with an efficiency of 85 % or more for the MPPS (EPA and HEPA filters) are tested according to
ISO 29463 part 1 to 5, while filters with a lower efficiency are tested according to ISO 16890 part 1 to 4.
Filters are classified in Groups and Classes based on their efficiency as defined in Table 1.
Note: For the classification of ISO ePM and ISO ePM filters only the ePM values are used.
1 2,5 x, minHEPA filters (class T13) have to be individually tested and their efficiency determined at MPPS according
to 29463-5. Filters shall be individually leak tested according to ISO 29463-4 where, in addition to the
reference leak scan method, four alternate methods for leak testing are allowed. For HEPA filters with
geometries which do not allow a scan testing, like e.g. cartridges or V-bank filters, the oil thread test
method or one of the other suitable (non-scanning) methods described in ISO 29463-4 can be applied.
Alternate norms used for leak testing should be clearly identified on the filter and certifications.
In order to extent the volume flow rate and the range of filter geometries (e.g. cylindrical filters)
deviations and extensions to the test rig defined by ISO 16890-2 and ISO 29463-5, respectively, are
described below.The test rig consists of several square duct
...
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