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TECHNICAL PAPERS: Gas Turbines: Industrial and Cogeneration

Inlet Fogging of Gas Turbine Engines—Part I: Fog Droplet Thermodynamics, Heat Transfer, and Practical Considerations

[+] Author and Article Information
Mustapha Chaker

Cyrus B. Meher-Homji, Thomas Mee

Gas Turbine Division, Mee Industries, Inc., 204 West Pomona Avenue, Monrovia, CA 91016

J. Eng. Gas Turbines Power 126(3), 545-558 (Aug 11, 2004) (14 pages) doi:10.1115/1.1712981 History: Received December 01, 2001; Revised March 01, 2002; Online August 11, 2004
Copyright © 2004 by ASME
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References

Figures

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Typical gas turbine inlet fogging skid
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Fog nozzle manifold operating in the inlet duct of a GE-7EA gas turbine
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Fog from an impaction pin-fogging nozzle operating at 2000 psig (138 barg)
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Experimental wind tunnel (10.5 m long, 25 m/sec) used to study droplet kinetics and thermodynamics. This wind tunnel provides dynamic similarity to gas turbine inlet ducts.
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Effect of air velocity, measurement locations, and diameter definition on droplet size
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Computational model for droplet evaporation
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Transient behavior of a two 14-micron droplets, one at 35°C (94°F) and one at 20°C (68°F); starting air conditions are 35°C and 30% RH
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Transient behavior of two 30-micron droplets, one at 35°C and one at 20°C; starting air conditions are 35°C and 30% RH
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Qualitative behavior measured in a duct showing the increase in relative humidity from a starting condition of 35% RH and the corresponding drop in air temperature in the duct
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Interaction of droplet to surrounding air conditions; droplet diameter; 50 microns
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Interaction of droplet to surrounding air conditions; droplet diameter: 20 microns
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Special channel system for water drain
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Duct support structures like those shown here can collect fog and result in excessive pooling of water. Such obstructions must be taken into account when designing the nozzle manifolds.
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Corroded inlet air duct floor

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