Gas Turbines and Dust - The Effectiveness of an Inlet Air Cleaner 700704
Two 60 kw, gas-turbine powered generator sets were operated together in a controlled environment containing 0.005 gm of selected dust per cubic foot of ambient air. One of the sets was equipped with an inertial-type air cleaner, but the other was unprotected.
The unprotected set was unable to carry its rated 60 kw load after 6 hr and 50 min of operation; the unit equipped with the intake air cleaner carried its rated load for nearly 132 hr before automatic shutdown occurred.
Both turbines were disassembled and inspected after shutdown. Most of the damage was confined to the air inlet housings, diffuser vanes, and turbine nozzles. Damage and dust ingestion parameters are discussed.