![NEW Patent CD for Nozzles for water injection in a turbine engine]()
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- CD of information on Nozzles for water injection in a turbine engine
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Following is a sample of the information contained on this CD: BACKGROUND OF THE INVENTION This invention relates generally to gas turbine engines and more particularly, to prebooster and precompressor water injection in a gas turbine engine. Gas turbine engines typically include a compressor for compressing a working fluid, such as air. The compressed air is injected into a combustor which heats the fluid causing it to expand, and the expanded fluid is forced through a turbine. The compressor typically includes a low pressure compressor and a high pressure compressor. The output of known gas turbine engines may be limited by the temperature of the working fluid at the output of the high pressure compressor, sometimes referred to as temperature T3 , and by the temperature of the working fluid in the combustor outlet, sometimes referred to as temperature T41 . To reduce both the T3 and T41 temperatures, it is known to use an intercooler positioned in the fluid flow path between the low pressure compressor and the high pressure compressor. In steady state operation, the intercooler extracts heat from the air compressed in the low pressure compressor, which reduces both the temperature and volume of air entering the high pressure compressor. Such reduction in temperature reduces both the T3 and T41 temperatures. Increased power output therefore can be achieved by increasing flow through the compressor. Typically, cool water or air circulates through the intercooler, and heat is transferred from the air flow to the cool water or air. The water or air absorbs the heat, and the heated water or air is then removed. Removing the heated water or air results in losses in total cycle thermal efficiency. Therefore, although an intercooler facilitates increased power output, the intercooler reduces thermal efficiency of the engine. The intercooler also introduces pressure losses associated with the removal of air, the actual cooling of that air, and
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