During sand and dust storms common to most hot arid desert areas, particulate concentrations close to the ground (less than 2 m) can reach levels 20,000 times those in typical U.S. cities. Even at an elevation of 8 m above grade, particulate concentrations about 1,000 times U.S. urban averages are frequently observed during sandstorms and dust storms. 

Such dust loads can cripple conventional multi-stage air filtration systems, cause massive maintenance expenditures and allow excessive dust concentrations to be ingested by the gas turbine. 

Self-cleaning reverse flow pulse filter systems combine the effectiveness of the high efficiency barrier filter with the low maintenance of inertial separators. They are capable of providing continuous, uninterrupted operation for prolonged time periods in the desert environment. This combination of characteristics is realized by using a barrier-type filter element which accumulates dust on the surface exposed to ambient air. The collection efficiency is similar to high-efficiency barrier air filters. 

With self-cleaning inlet filtration, elevation of the system is not necessary since air quality downstream of the filters exceeds requirements under even the most difficult ambient conditions, regardless of elevation. Filter element life is practically independent of dust load. Elevating self-cleaning pulse filter systems unnecessarily is discouraged because it makes access for inspection and servicing more difficult and costly. 

During sandstorms and dust storms, the filter system will pulse clean continuously for lengthy periods and it is essential that adequate compressed air be available. The air compressor and receiver should be sized carefully to ensure adequate performance. 

These environments lend themselves to evaporative cooling, fogging, or chilled water cooling coils to enhance engine performance.