Patent
Cooling air cooler for a gas turbofan engine
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TLDR
An air-to-air heat exchanger is provided for a gas turbofan engine to significantly reduce the quantity of cooling air that is presently needed to effectively cool the hot turbine parts.Abstract:
An air-to-air heat exchanger is provided for a gas turbofan engine to significantly reduce the quantity of cooling air that is presently needed to effectively cool the hot turbine parts. Typically, the turbine is internally cooled with air bled from the compressor which, though cooler than the turbine, has been heated due to the work done on it by the compressor. In accordance with the present invention, the heat exchanger is located internally of the bypass duct to place in heat exchange relationship a captured portion of the relatively cool bypass flow and this warmer compressor bleed air, thereby cooling the turbine coolant and significantly reducing the amount of such coolant required. This results in a decrease in engine specific fuel consumption.read more
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References
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Gas turbine engine with means for reducing the formation and emission of nitrogen oxides
TL;DR: In this article, the authors proposed a means for reducing the formation and emission of nitrogen oxides in a gas turbine engine provide for bleeding and cooling a portion of the airflow pressurized by the compressor.
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TL;DR: In this paper, a gas turbine by-pass jet engine with combustion equipment provided in the bypass duct, a heat exchanger also being disposed in a by pass duct upstream of the duct burners, there being a means for bleeding hot air from the engine compressor and passing it through the heat exchange so as to cool the bleed air and to pre-heat the by pass air, the cooled bleed air being utilized for turbine cooling.
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