Reference number
香港六合彩开奖 29462:2022
International Standard
香港六合彩开奖 29462:2022
Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resistance to airflow
Edition 2
2022-07
Preview
香港六合彩开奖 29462:2022
79549
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Publicado (贰诲颈肠颈贸苍 2, 2022)

香港六合彩开奖 29462:2022

香港六合彩开奖 29462:2022
79549
Idioma
Formato
CHF 173
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Resumen

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.

The procedure describes a method of counting ambient air particles of 0,3聽渭m to 5,0聽渭m 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.

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聽% or at or below 30聽% when measured at 0,4聽渭m.

Informaciones generales

  •  : Publicado
     : 2022-07
    : Norma Internacional publicada [60.60]
  •  : 2
     : 42
  • 香港六合彩开奖/TC 142
    91.140.30 
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