EN ISO 29464:2024

SLOVENSKI STANDARD
oSIST prEN ISO 29464:2023
01-julij-2023
Čiščenje zraka in drugih plinov - Terminologija (ISO/DIS 29464:2023)
Cleaning of air and other gases - Terminology (ISO/DIS 29464:2023)
Reinigung von Luft und anderen Gasen - Terminologie (ISO/DIS 29464:2023)
Épuration de l'air et autres gaz - Terminologie (ISO/DIS 29464:2023)
Ta slovenski standard je istoveten z: prEN ISO 29464
ICS:
01.040.13 Okolje. Varovanje zdravja. Environment. Health
Varnost (Slovarji) protection. Safety
(Vocabularies)
13.040.99 Drugi standardi v zvezi s Other standards related to air
kakovostjo zraka quality
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
oSIST prEN ISO 29464:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 29464:2023
oSIST prEN ISO 29464:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 29464
ISO/TC 142 Secretariat: UNI
Voting begins on: Voting terminates on:
2023-04-27 2023-07-20
Cleaning of air and other gases — Terminology
Épuration de l'air et autres ga — Terminologie
ICS: 91.140.30; 01.040.91
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
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NATIONAL REGULATIONS.
ISO/DIS 29464:2023(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 2023

oSIST prEN ISO 29464:2023
ISO/DIS 29464:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 29464
ISO/TC 142 Secretariat: UNI
Voting begins on: Voting terminates on:

Cleaning of air and other gases — Terminology
Épuration de l'air et autres ga — Terminologie
ICS: 91.140.30; 01.040.91
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
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Reference number
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 29464:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 29464:2023
ISO/DIS 29464:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General, applicable to both particle and gas-phase air cleaners . 1
3.2 Particulate matter filters (including general ventilation, EPA, HEPA and ULPA
filters) . 6
3.3 Air intake particle filters for rotary machines . 22
3.4 Cleanable particle filter degradation . 23
3.5 Gas phase air cleaners (GPAC) . 25
3.6 UVC devices . 33
3.7 Stand-alone electrically-powered air cleaners . 37
Bibliography .39
Index .41
iii
oSIST prEN ISO 29464:2023
ISO/DIS 29464:2023(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.
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.
This third edition of ISO 29464 cancels and replaces the second edition (ISO 29464:2017), which has
been technically revised.
iv
oSIST prEN ISO 29464:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 29464:2023(E)
Cleaning of air and other gases — Terminology
1 Scope
This document establishes a terminology for the air filtration industry and comprises terms and
definitions only.
This document is applicable to particulate matter and gas phase air filters and air cleaners used for
the general ventilation of inhabited enclosed spaces. It is also applicable to air inlet filters for static or
seaborne rotary machines and UV-C germicidal devices.
It is not applicable to cabin filters for road vehicles or air inlet filters for mobile internal combustion
engines for which separate arrangements exist. Dust separators for the purpose of air pollution control
are also excluded.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1 General, applicable to both particle and gas-phase air cleaners
3.1.1
air cleaner
device for removing contaminants (3.1.12) from air in a ventilation system, building or other enclosed
space
3.1.2
robotic air cleaner
air cleaner that operates and changes its physical location autonomously without user intervention
Note 1 to entry: The robotic air cleaner can consist of a part that houses the air cleaning function and can have
a docking station and/or other accessories to assist its operation.
[SOURCE: IEC 63086-1:2020]
3.1.3
fresh-air air cleaner
air cleaner connected to the external environment, which provides pollutant-reduced outdoor air into
an indoor space
Note 1 to entry: The fresh-air air cleaner can also include other auxiliary functions, such as heat exchange.
[SOURCE: IEC 63086-1:2020]
oSIST prEN ISO 29464:2023
ISO/DIS 29464:2023(E)
3.1.4
air velocity
rate of air movement
Note 1 to entry: It is expressed in m/s (fpm).
3.1.5
bypass
air cleaner bypass
sneakage
proportion of the challenge air stream (3.5.13) that passes around or through an air cleaner (3.1.1)
without interacting with the air cleaner
3.1.6
calibrate
to compare readings from the instrument to be calibrated with those from a reference device
3.1.7
capture
removal of contaminants from an air stream
3.1.8
classification
allocation of air cleaners into groups and classes according to relevant aspects of their air cleaning
performance
3.1.9
clean side
downstream side of an air cleaner element
[SOURCE: ISO 22031:2021]
3.1.10
combination product
air cleaner that includes a secondary function besides air cleaning within the same housing, such as
humidifying, dehumidifying, heating, or air conditioning
[SOURCE: IEC 63086-1:2020]
3.1.11
concentration
quantity of one substance dispersed in a defined amount of another
3.1.12
contaminant
pollutant
substance (solid, liquid or gas) that negatively affects the intended use of a gas
3.1.13
contamination
pollution
presence of a substance that negatively affects the intended use of a gas
3.1.14
decontamination factor
ratio of the contaminant (3.1.12) concentration or particle number upstream of an air cleaner to the
contaminant concentration (3.1.11) or particle number downstream of the air cleaner
Note 1 to entry: The decontamination factor can also be expressed as 1/(1 – overall efficiency) or as 1/penetration.
oSIST prEN ISO 29464:2023
ISO/DIS 29464:2023(E)
3.1.15
dirty side
upstream side of an air cleaner element
[SOURCE: ISO 22031:2021]
3.1.16
downstream
area or region into which air flows on leaving an air cleaner
3.1.17
removal efficiency
air cleaner removal efficiency
filter removal efficiency
fraction or percentage of a challenge contaminant (3.1.12) that is removed by an air cleaner
3.1.18
average removal efficiency
value of removal efficiency which results from averaging the removal efficiencies determined over a
number of discrete intervals up to the end of an efficiency test
3.1.19
effluent
gas or liquid discharged from a given source into the external environment
Note 1 to entry: This is a general term describing any gas or liquid discharged from a given source; in this context,
the discharged liquid or gas may contain associated gaseous, liquid and/or particulate contaminants (3.1.12).
3.1.20
face velocity
filter face velocity
air cleaner face velocity
volumetric air flow rate divided by the nominal air cleaner face area (3.1.23)
Note 1 to entry: air cleaner face velocity is expressed in m/s (fpm).
3.1.21
filter
air filter
device for separating solid or liquid particles or gaseous contaminant (3.1.12) from an air stream
passing through the device
Note 1 to entry: The device is generally formed of a layer or layers of porous, fibrous or granular material.
Note 2 to entry: Air being cleaned by a filter must pass through the filter, whereas an air cleaner (3.1.1) can
reduce air contamination (3.1.13) by any method.
3.1.22
filter face area
air cleaner face area
cross-sectional face area of the air cleaner through which air flows into the device calculated using
exact dimensions
3.1.23
nominal filter face area
nominal air cleaner face area
cross-sectional face area of the air cleaner through which air flows into the device calculated using
dimensions rounded up to the nearest integer
oSIST prEN ISO 29464:20
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