Based on three patented innovations (air-assist atomizer, wetness sensor, closed loop PLC), a new low-pressure power GT augmentation system was developed. Two modifications of air-assist atomizer were tested in the Jet Engine Laboratory of the Technion. The tests were performed to investigate influence of thermodynamic parameters on spray characteristics, as droplet size and velocity distribution of the spray. The system as a whole has passed field test in a gas turbine of a power station. Droplet characteristics, conceptual design aspects and tests results are the subject of this paper.

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