Feedwater temperatures above the ambient air wet-bulb and dry-bulb temperatures can significantly reduce the effectiveness of an evaporative cooler. Using the standard evaporative cooler equation significantly underestimates the temperature of the air leaving the evaporative cooler. This, in turn, causes an over estimate of the available power of the gas turbine. This paper describes a procedure for use in estimating the impact of high temperature feedwater on evaporative cooler effectiveness.
- International Gas Turbine Institute
The Effect of High Temperature Feedwater on the Performance of an Evaporative Cooler Installed in a Gas Turbine Combustion Air Inlet System
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Johnson, RS, Sr. "The Effect of High Temperature Feedwater on the Performance of an Evaporative Cooler Installed in a Gas Turbine Combustion Air Inlet System." Proceedings of the ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations. Birmingham, UK. June 10–13, 1996. V003T08A001. ASME. https://doi.org/10.1115/96-GT-229
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