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Gas turbine air intake systems require effective filtration to help limit the ingress of airborne particles, moisture and other contaminants into the turbine environment.
Filter media selection should balance filtration efficiency, pressure drop, dust-holding capacity and resistance to the actual operating conditions. Depending on the application, cellulose, synthetic media, PTFE membrane and water-repellent treatment options may be considered.
Fine airborne particles can contribute to fouling and reduced intake-air cleanliness. Suitable media should support effective capture at an acceptable pressure drop.
High resistance can affect intake performance. Media selection should consider airflow, required efficiency and pressure-drop development over time.
Humidity, rain, salt-laden air or other site conditions can influence filter-media selection and required treatments.
Dust loading, cleaning strategy and operating environment all affect filter replacement intervals and should be evaluated together.
Cellulose and synthetic media options may be considered for general gas turbine air intake applications, depending on required efficiency and site conditions.
PTFE membrane media may be considered where fine-particle capture and surface dust release are important requirements.
Water-repellent treatment options may be considered for applications exposed to humidity, rain or other moisture-related conditions.
