NF EN ISO 29462
Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resistance to airflow
ISO 29462:2013 describes a procedure for measuring the performance of general ventilation air cleaning devices in their end use installed configuration. The performance measurements include removal efficiency by particle size and the resistance to airflow. The procedures for test include the definition and reporting of the system airflow. The procedure describes a method of counting ambient air particles of 0,3 μm to 5,0 μm upstream and downstream of the in-place air cleaner(s) in a functioning air handling system. The procedure describes the reduction of particle counter data to calculate removal efficiency by particle size. Since filter installations vary dramatically in design and shape, a protocol for evaluating the suitability of a site for filter evaluation and for system evaluation is included. When the evaluated site conditions meet the minimum criteria established for system evaluation, the performance evaluation of the system can also be performed according to this procedure. ISO 29462:2013 also describes performance specifications for the testing equipment and defines procedures for calculating and reporting the results. This International Standard is not intended for measuring performance of portable or movable room air cleaners or for evaluation of filter installations with and expected filtration efficiency at or above 99 % or at or below 30 % when measured at 0,4 μm.
ISO 29462:2013 describes a procedure for measuring the performance of general ventilation air cleaning devices in their end use installed configuration. The performance measurements include removal efficiency by particle size and the resistance to airflow. The procedures for test include the definition and reporting of the system airflow.
The procedure describes a method of counting ambient air particles of 0,3 μm to 5,0 μm upstream and downstream of the in-place air cleaner(s) in a functioning air handling system. The procedure describes the reduction of particle counter data to calculate removal efficiency by particle size.
Since filter installations vary dramatically in design and shape, a protocol for evaluating the suitability of a site for filter evaluation and for system evaluation is included. When the evaluated site conditions meet the minimum criteria established for system evaluation, the performance evaluation of the system can also be performed according to this procedure.
ISO 29462:2013 also describes performance specifications for the testing equipment and defines procedures for calculating and reporting the results. This International Standard is not intended for measuring performance of portable or movable room air cleaners or for evaluation of filter installations with and expected filtration efficiency at or above 99 % or at or below 30 % when measured at 0,4 μm.
<p>This document describes a procedure for measuring the performance of general ventilation air cleaning devices in their end use installed configuration. The performance measurements include removal efficiency by particle size and the resistance to airflow. The test procedures include the definition and reporting of the system airflow.</p> <p>The procedure describes a method of counting ambient air particles of 0,3 μm to 5,0 μm upstream and downstream of the in-place air cleaner(s) in a functioning air handling system. The procedure describes the reduction of particle counter data to calculate removal efficiency by particle size.</p> <p>Since filter installations vary dramatically in design and shape, a protocol for evaluating the suitability of a site for filter evaluation and for system evaluation is included. When the evaluated site conditions meet the minimum criteria established for system evaluation, the performance evaluation of the system can also be performed according to this procedure.</p> <p>This document also describes performance specifications for the testing equipment and defines procedures for calculating and reporting the results. This document is not intended for measuring performance of portable or movable room air cleaners or for evaluation of filter installations with an expected filtration efficiency at or above 99 % or at or below 30 % when measured at 0,4 μm.</p>
- Avant-proposv
- Introductionvi
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1 Domaine d'application1
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2 Références normatives1
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3 Termes, définitions et abréviations1
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3.1 Termes et définitions1
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3.2 Abréviations3
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4 Matériel d'essai et réglages3
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4.1 Compteur de particules3
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4.2 Diluteur3
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4.3 Pompe4
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4.4 Système d'échantillonnage4
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4.5 Instrument de mesure de la vitesse de l'air6
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4.6 Instrument de mesure de l'humidité relative6
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4.7 Instrument de mesure de la température6
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4.8 Instrument de mesure de la perte de charge7
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4.9 Maintenance et étalonnage des matériels d'essai7
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5 Évaluation du site7
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5.1 Généralités7
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5.2 Inspection de l'installation de filtration préalable à l'essai7
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5.3 Approbation de l'essai8
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6 Mode opératoire des essais8
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6.1 Vitesse de l'air8
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6.2 Humidité relative8
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6.3 Température9
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6.4 Perte de charge9
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6.5 Efficacité d'élimination9
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6.6 Sondes d'échantillonnage13
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7 Expression des résultats14
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7.1 Informations générales14
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7.2 Recueil de données16
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8 Analyses des données et des erreurs17
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8.1 Généralités17
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8.2 Humidité relative17
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8.3 Température de l'air17
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8.4 Composition de l'aérosol17
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8.5 Uniformité de la concentration de l'aérosol17
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8.6 Erreurs de coïncidence - Compteur de particules17
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8.7 Pertes en particules18
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9 Calcul des résultats18
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9.1 Calcul de l'efficacité d'élimination18
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9.2 Calcul de l'incertitude20
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9.3 Coefficient de variance, CV21
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10 Système d'essai renforcé facultatif22
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10.1 Application du système d'essai renforcé22
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10.2 Principe du système d'essai renforcé22
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10.3 Détermination de la taille de particule corrigée23
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10.4 Présentation des résultats24
- Annexe A (informative) Formulaire d'inspection de l'installation de filtration préalable à l'essai25
- Annexe B (informative) Formulaire d'approbation d'essai28
- Annexe C (informative) Exemple de réalisation d'un essai30
- Bibliographie46
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