M00000876
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ISO 29461-1 1st Edition, April 1, 2013 Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements
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Availability date: 07/13/2021
Description / Abstract:
ISO 29461 specifies methods and procedures for determining the
performance of particulate air filters used in air intake filter
systems for rotary machinery such as stationary gas turbines,
compressors and other stationary internal combustion engines. It
applies to air filters having an initial particle efficiency up to
99,9 % with respect to 0,4 μm particles. Filters with higher
initial particle efficiencies are tested and classified according
to other standards (e.g. EN 1822). These procedures are intended
for filters which operating at flow rates within the range 0,25
m3/s (900 m3/h) up to 1,67 m3/s
(6000 m3/h).
This part of ISO 29461 refers to static (barrier) filter systems
but can be applied to other filter types and systems in appropriate
circumstances.
Two methods of determining the efficiency are used in this part
of ISO 29461:
-particulate efficiency (measured with respect to particle
number and size);
-gravimetric efficiency (percentage weighted mass removal
of loading dust).
Also a flat sheet 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 particle efficiency, the
untreated filter is loaded with dust in steps until its final test
pressure drop is reached. Information on the loaded performance of
the filter is then obtained.
The performance results obtained in accordance with this part of
ISO 29461 cannot be quantitatively applied (by themselves) to
predict performance in service with regard to efficiency and
lifetime. Other factors influencing performance to be taken into
account are described in the annexes.