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The cartridge integrates a pleated HEPA media pack within a rigid metal frame designed to withstand the pressure pulses and temperature variations typical of gas turbine inlet air systems. Its
Request a QuoteThe cartridge integrates a pleated HEPA media pack within a rigid metal frame designed to withstand the pressure pulses and temperature variations typical of gas turbine inlet air systems. Its primary function is to remove sub‑micron particulates that could cause fouling, erosion, or corrosion of compressor blades and downstream components.
The frame is constructed from corrosion‑resistant aluminized steel or stainless steel, selected based on the expected inlet temperature and humidity. Spot‑welded seams provide structural integrity while minimizing leak paths around the media seal.
Media pleat height typically ranges from 20 mm to 30 mm, with a pleat density of 8 to 12 pleats per inch, delivering a nominal filtration area of 2.5 m² to 4.0 m² per cartridge. The pleat geometry is optimized to maintain low pressure drop under high flow rates, usually below 150 Pa at 10 m³/s.
An integrated gasket, made of nitrile rubber or EPDM, ensures a tight seal against the housing, preventing bypass leakage that could degrade filtration efficiency below 99.97 % at 0.3 µm.
| Parameter | Typical Value | Notes |
|---|---|---|
| Filtration Efficiency (0.3 µm) | ≥ 99.97 % | Meets HEPA standard EN 1822‑1 |
| Initial Pressure Drop | 80 – 130 Pa | At 10 m³/s flow, clean cartridge |
| Maximum Operating Temperature | 250 °C (aluminized steel) / 400 °C (stainless) | Depends on frame material |
| Media Area | 2.5 – 4.0 m² | Varies with pleat height and count |
| Cartridge Dimensions (L × W × H) | 300 mm × 300 mm × 50 mm (standard) | Custom lengths available |
Inlet air filtration protects the compressor from particulate ingestion that can lead to blade fouling, increased surface roughness, and reduced aerodynamic efficiency. By maintaining a clean airflow, the cartridge helps sustain design‑point pressure ratios and specific fuel consumption.
Operating environments with high dust loads, such as desert sites or coastal plants with salt‑laden aerosols, benefit from the cartridge’s hydrophobic media option, which mitigates moisture‑induced media degradation and prevents clogging.
Additionally, the cartridge’s robust frame design resists vibration-induced fatigue, extending service life in cyclic load conditions typical of peaking units and aeroderivative turbines.
Each cartridge undergoes a dimensional inspection using coordinate‑measuring machines to verify frame tolerances within ±0.2 mm. Media integrity is checked by scanning electron microscopy to confirm fiber diameter and binder distribution.
Pressure‑drop testing is performed at three flow rates (5, 7.5, and 10 m³/s) to ensure the cartridge meets the specified initial Δ P curve. Efficiency validation uses a DOP aerosol challenge downstream of a neutralizer, with particle counting per ISO 14644‑1.
Final visual inspection looks for weld defects, gasket seating, and sealant uniformity. Only units that pass all checkpoints are cleared for shipment, reducing field‑failure risk for OEM integrators.
Yes. Length, width, and height can be adjusted within standard tooling limits; custom flange patterns are available upon receipt of a housing drawing or CAD model.
Required data include inlet air flow rate, temperature range, particulate concentration, preferred frame material, and any space constraints. Providing a sketch or 3D model accelerates the quoting process.
Frame options are aluminized steel (up to 250 °C), 304 stainless steel, and 316 stainless steel. Gasket choices are nitrile rubber, EPDM, silicone, and fluorocarbon, each suited to specific chemical or temperature environments.
Inspection includes dimensional CMM checks, media SEM analysis, pressure‑drop testing at multiple flow rates, DOP efficiency validation, and visual examination of welds and seals.
Cartridges are placed in individual polyethylene sleeves, then stacked in corrugated cartons with corner protectors and shock‑absorbing foam. Export shipments are further sealed in moisture‑barrier bags and palletized for stability.
To discuss application‑specific requirements, request a detailed quotation, or arrange a sample cartridge, please reach out via our technical inquiry form. Our engineering team will review your operating conditions and propose a configuration that meets filtration efficiency, pressure‑drop, and durability targets.
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