ISO/DIS 29461 Turbine Filter Test System
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Applications
Testing of gas turbine intake filter systems according to ISO 29461-2 and ISO/AWI 29461-4
Testing of general air filters (ISO 16890. EN 779. ASHRAE 52.2)
Standards
The system complies with:
(1) ISO 29461-1 – Air filter performance, test methods.
(2) ISO 29461-2 – Air filter performance, gas adsorption test.
(3) ISO/AWI 29461-4 – Air filter performance, salt removal efficiency.
(4) ISO 16890-2 – Air filter classification and testing for general air filters.
(5) ISO 16890-3 – Gravimetric efficiency determination.
(6) ISO 16890-4 – Fractional efficiency and dust holding capacity.
(7) ISO/DIS 29461-7 – Gas turbine filter testing guidance.
(8) ISO 12103-1 – Fine test dust (A2) for filter performance.
(9) ASHRAE 52.2 – Air filter testing using airflow and particle size distribution.
(10) EN 779 – Requirements for high-efficiency air filters.
(11) GB/T 12103-1 & GB/T 12103-2 – Test dust and adsorption methods.
(12) GB/T 18801-2015 – Performance testing for air purifiers.
Principle
A defined volume flow rate is sucked through a HEPA intake filter, the attached test duct and the safety filter. The test system is composed of 6 sections: aerosol inlet, upstream measurement, specimen holder, downstream measurement, safety filter and flow rate measurement. The measurement sections are equipped with ports for the aerosol characterization and the determination of the pressure drop.
Technical data
| Parameter | Unit | Value |
|---|---|---|
| Test flow rate | m³/h | 800 … 11.000 |
| Test aerosol | – | DEHS, KCl, Ashrae, ISO 12103-A2 (AC fine), ISO 12103-A4 (AC coarse) |
| Test specimen dimensions | – | 610 × 610 mm (pocket and cassette filters); diameter ≤ 400 mm, length ≤ 1500 mm (filter cartridges) |
| Differential pressure of test specimen | Pa | max. 2000 |
| Compressed air supply (operating gas/air) | bar | min. 5 (17 m³/h) |
| Water supply (operating medium) | bar | min. 3 |
| Power supply | – | 3 × 400 VAC, 125 A, 50 Hz |
| Air circulation | % | 0 … 100 |
| Sensors (others) | – | Temperature, relative humidity, air pressure |
| System dimensions (W × H × D) | m | 4.6 × 1.7 × 14.0 |
Accessories
| Accessory / Consumable | Quantity | Description |
|---|---|---|
| DEHS Aerosol Generator | 1 | For fine aerosol particle testing |
| ASHRAE Dust Generator | 1 | For standardized dust loading tests |
| Optical Particle Counters | 2 | 0.2–10 μm, four channels |
| H14 Air Filter | 1 | For system calibration |
| Temperature & Humidity Sensors | 2 | Monitor test environment |
| Gas Analyzers | 3 | Measure NO₂, H₂SO₄, and other gases |
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