kSIST FprEN ISO 29461-4:2025
(Main)Air intake filter systems for rotary machinery - Part 4: Test methods for static filter systems in coastal and offshore environments (ISO/FDIS 29461-4:2025)
Air intake filter systems for rotary machinery - Part 4: Test methods for static filter systems in coastal and offshore environments (ISO/FDIS 29461-4:2025)
This document defines test methods for performance testing of individual filter elements and of the complete filtration system.1)
This procedure is intended for filter elements and filter systems which operate at flow rated up to 8 000 m3/h per filter element.
1) The filters will be loaded with ultra-fine salt particles of a size mostly sub micron during variable humidity to simulate real offshore and coastal conditions hence filters with an initial conditioned efficiency lower than 50 % for the ePM1 particles (filter class T7) are likely to underperform and would not be suited as a single stage filter.
Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 4: Prüfverfahren für statische Filtersysteme in Meeres- und Offshore-Umgebungen (ISO/FDIS 29461-4:2025)
Dieses Dokument legt Prüfverfahren für die Leistungsprüfung einzelner Filterelemente und kompletter Filtersysteme fest.
Dieses Verfahren ist für Filterelemente und Filtersysteme vorgesehen, die bei einem bis zu 8 000 m3/h je Filterelement bemessenem Strom arbeiten.
Systèmes de filtration d'air d'admission pour machines tournantes - Partie 4: Méthodes d'essai des systèmes de filtration statique en milieu côtier et offshore (ISO/FDIS 29461-4:2025)
Le présent document définit les méthodes d'essai pour les essais de performance des éléments filtrants individuels et du système de filtration complet.1)
Ce mode opératoire est destiné aux éléments filtrants et aux systèmes de filtration qui fonctionnent à un débit allant jusqu'à 8 000 m3/h par élément filtrant.
1) Les filtres seront chargés avec des particules de sel ultrafines d'une taille principalement du sous-micron avec une humidité variable pour simuler des conditions offshore et côtières réelles, par conséquent les filtres avec une efficacité conditionnée initiale inférieure à 50 % pour les particules ePM1 (classe de filtre T7) sont susceptibles de sous‑performer et ne conviendraient pas comme filtre à étage unique.
Zračni filtrski sistemi rotacijskih strojev - 4. del: Preskusne metode za statične filtrirne sisteme v obalnih in priobalnih okoljih (ISO/FDIS 29461-4:2025)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 29461-4:2024
01-april-2024
Zračni filtrski sistemi rotacijskih strojev - 4. del: Preskusne metode za statične
filtrirne sisteme v obalnih in priobalnih okoljih (ISO/DIS 29461-4:2024)
Air intake filter systems for rotary machinery - Part 4: Test methods for static filter
systems in coastal and offshore environments (ISO/DIS 29461-4:2024)
Ansaugfiltersysteme von Rotationsmaschinen - Prüfverfahren - Teil 4: Prüfverfahren für
statische Filtersysteme in Meeres- und Offshore-Umgebungen (ISO/DIS 29461-4:2024)
Systèmes de filtration d'air d'admission pour machines tournantes - Partie 4: Méthodes
d'essai des systèmes de filtration statique en milieu côtier et offshore (ISO/DIS 29461-
4:2024)
Ta slovenski standard je istoveten z: prEN ISO 29461-4
ICS:
29.160.99 Drugi standardi v zvezi z Other standards related to
rotacijskimi stroji rotating machinery
oSIST prEN ISO 29461-4:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN ISO 29461-4:2024
oSIST prEN ISO 29461-4:2024
DRAFT
International
Standard
ISO/DIS 29461-4
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery —
Voting begins on:
Part 4: 2024-02-07
Test methods for static filter
Voting terminates on:
2024-05-01
systems in coastal and offshore
environments
Systèmes de filtration d'air d'admission pour machines
tournantes —
Partie 4: Méthodes d'essai des systèmes de filtration statique en
milieu côtier et offshore
ICS: 29.160.99
THIS DOCUMENT IS A DRAFT CIRCULATED
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Reference number
ISO/DIS 29461-4:2024(en)
oSIST prEN ISO 29461-4:2024
DRAFT
ISO/DIS 29461-4:2024(en)
International
Standard
ISO/DIS 29461-4
ISO/TC 142
Air intake filter systems for rotary
Secretariat: UNI
machinery —
Voting begins on:
Part 4:
Test methods for static filter
Voting terminates on:
systems in coastal and offshore
environments
Systèmes de filtration d'air d'admission pour machines
tournantes —
Partie 4: Méthodes d'essai des systèmes de filtration statique en
milieu côtier et offshore
ICS: 29.160.99
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland Reference number
ISO/DIS 29461-4:2023(en)
ii
oSIST prEN ISO 29461-4:2024
ISO/DIS 29461-4:2023(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Air flows .2
3.2 Efficiencies .2
4 Symbols and abbreviated terms. 2
5 Description of test method . . 3
6 Test rig and equipment . 3
6.1 General .3
6.1.1 Test rig .3
6.2 Test duct .4
6.2.1 Test rig layout .4
6.2.2 Test air conditioning .4
6.2.3 Measurement of the air flow rate .5
6.2.4 Measurement of pressure drop .5
6.2.5 Aerosol mixing section.5
6.2.6 Measurement of temperature and relative humidity .5
6.3 Measurement equipment.5
6.3.1 Test rig instrumentation .5
6.3.2 Sodium Flame Photometer .5
6.4 Aerosol sampling .6
6.4.1 Sample probes.6
6.4.2 Sampling air flow .7
6.5 Aerosol generation .7
6.5.1 Salt generation.7
6.5.2 Aerosol injection .7
6.6 Water spray device .7
6.7 Water collection device .7
7 Qualification of test rig and apparatus . 7
7.1 Pressure system testing .7
7.1.1 Pressure system test protocol .7
7.1.2 Pressure system test results .7
7.2 Aerosol uniformity .8
7.2.1 Aerosol uniformity parameters .8
7.2.2 Aerosol uniformity protocol .8
7.2.3 Aerosol uniformity results .8
7.2.4 Water droplet size distributions .9
7.2.5 Water fog sedimentation check .9
8 Test conditions . 9
8.1 Test air .9
8.2 Test water . .9
9 Test method . 9
9.1 Stop criteria .9
9.2 Adjustment of the test air flow rate .10
9.3 Preparatory checks .10
9.3.1 Operational readiness of the measuring instruments .10
9.3.2 Zero level check measurement of the sodium flame photometer .10
9.3.3 Absolute pressure, temperature and relative humidity of the test air .10
9.3.4 Starting up the aerosol generator .10
iii
oSIST prEN ISO 29461-4:2024
ISO/DIS 29461-4:2023
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