Abstract
ΟγΈΫΑωΊΟ²ΚΏͺ½±/TS 21220:2009 presents test methods and specifies a test rig for measuring the filter performance of particulate air filters used for general ventilation. The test rig is designed for an air flow rate of between 0,25 m3/s [900 m3/h (530 ft3/min)] and 1,5 m3/s [5 400 m3/h (3 178 ft3/min)].
ΟγΈΫΑωΊΟ²ΚΏͺ½±/TS 21220:2009 is applicable to air filters having an initial efficiency of less than 99 % with respect to 0,4 Β΅m particles. Filters in the higher end and those with an above 99 % initial efficiency are tested and classified according to other standards.
It combines two test methods: a βfineβ method for air filters in the higher efficiency range and a βcoarseβ method for filters of lower efficiency. In either case, a flatβsheet media sample or media pack sample from an identical filter is conditioned (discharged) to provide information about the intensity of the electrostatic removal mechanism. After determination of its initial efficiency, the untreated filter is loaded with synthetic dust in a single step until its final test pressure drop is reached. Information on the loaded performance of the filter is then obtained.
The performance results thus obtained cannot alone be quantitatively applied to predict inβservice performance with regard to efficiency and lifetime, so other factors influencing performance are also presented.
General information
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Status: WithdrawnPublication date: 2009-10Stage: Withdrawal of International Standard [95.99]
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Edition: 1Number of pages: 54
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Technical Committee :ΟγΈΫΑωΊΟ²ΚΏͺ½±/TC 142ICS :13.040.20
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PublishedΟγΈΫΑωΊΟ²ΚΏͺ½± 16890-1:2016
WithdrawnΟγΈΫΑωΊΟ²ΚΏͺ½± 16890-2:2016
WithdrawnΟγΈΫΑωΊΟ²ΚΏͺ½± 16890-3:2016
WithdrawnΟγΈΫΑωΊΟ²ΚΏͺ½± 16890-4:2016
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