Abstract: A wet compression system for a gas turbine compressor having a bellmouth that includes a plurality of nozzles for spraying a fine spray of liquid disposed within an aft section of the bellmouth. The aft section of the bellmouth may include a downstream half of the bellmouth, and the nozzles may be connected to a plurality of struts, each of the struts comprising a structural member that connects an inner diameter casing of the bellmouth to an outer diameter casing of the bellmouth. In some embodiments, the nozzles may be positioned on a leading edge of at least one of the struts and a minimum clearance of at least approximately 0.2 m may be maintained between the nozzles and the inner diameter casing of the bellmouth. In other embodiments, the nozzles may be positioned on a trailing edge of at least one of the struts and a minimum clearance of at least approximately 0.05 m may be maintained between the nozzles and the inner diameter casing of the bellmouth.

Abstract: An on-line water wash system for a compressor having a bellmouth casing with a region of known high velocity inlet airflow and a number of rotating blades. The water wash system may include a number of water nozzles positioned within the bellmouth casing about the region of known high velocity inlet airflow and a stream of water droplets. The stream of water droplets is targeted by the water nozzles so as to avoid the bellmouth casing and the rotating blades.