Gas turbine air filtration testing equipment supplier
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Test System for testing air intake filter systems for rotary machinery (ISO 29461). The test system for testing air intake filter systems for rotary machinery is based on the well-established filter test system for general air filters (ISO 16890) and extended to fulfil the specifications of ISO 29461.It was developed with the aim of testing filters with different shapes (filter cartridges, cassette filter, filter with filter bags and plane filter media) using varying test aerosols (salt, oil) under adjustable air conditions (air humidity, temperature) within the test duct. By using the test system the following filter characteristics can be determined: differential pressure curves, dust holding capacity, gravimetric efficiency, fractional efficiency, salt removal efficiency (ISO/AWI 29461-4) and water endurance (ISO 29461-2).
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.
Features
Circulation mode for control of the test parameters temperature and humidity
Injection of different aerosols (NaCl, KCl, DEHS) into an optimal flow profile
Automated feeding of water droplets and supersaturated vapour
High level of automation, mostly automated test runs with complete operator guiding
Gas-Tight Test Ducts: Ensure accurate particle and gas measurements.
Modular Design: Accommodates different filter types and sizes.
High Automation: Software-driven sequences with automatic data acquisition.
Multi-Medium Testing: Supports various aerosols and pollutant gases.
Standardized Reporting: Automatically generates reports including differential pressure, dust loading, fractional efficiency, and salt removal efficiency.
Environmental Control: Built-in temperature and humidity sensors allow testing under controlled conditions.
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 |
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