Power augmentation of combustion turbines by injection of cold air upstream of compressor
A technology for compressed air and gas turbines, which can be used in gas turbine installations, combustion air/combustion-air treatment, machines/engines, etc., and can solve the problems of high operation and maintenance costs, high investment costs, etc.
Inactive Publication Date: 2008-07-23
DRESSER RAND CO
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However, these coolers involve high investment costs as well as high operating and maintenance costs
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[0011] Referring to FIG. 1 , there is shown a power augmentation gas turbine power generation system according to an embodiment of the present invention, generally indicated by reference numeral 10 . The system 10 includes a conventional gas turbine assembly 11 , generally indicated at 11 , having a main compressor 12 receiving a source of intake air at ambient temperature at an inlet 13 and supplying compressed air to a combustor 16 . Air; main expansion turbine 14 operatively associated with main compressor 12 , with combustion chamber 16 supplying air to main expansion turbine 14 , and generator 15 for generating electricity.
[0012] According to an embodiment, a compressed air reservoir 18 is provided. The storage 18 is preferably an underground storage structure storing air compressed by at least one auxiliary compressor 20 . In this embodiment, the auxiliary compressor 20 is driven by an electric motor 21 , but it could be driven by an expander or any other source. Au...
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A combustion turbine power generation system 10 includes a combustion turbine assembly 11 including a main compressor 12 constructed and arranged to receive ambient inlet air, a main expansion turbine 14 operatively associated with the main compressor, a combustor 16 constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator 15 associated with the main expansion turbine for generating electric power. Pressure reducing structure 28 is constructed and arranged to reduce pressure of compressed air from a source of compressed air to atmospheric pressure and thus to reduce a temperature of the compressed air from the source of compressed air to a temperature below ambient temperature when exhausted from the pressure reducing structure. Structure 32 is associated with the pressure reducing structure to permit mixing of the air exhausted from the pressure reducing structure and the ambient inlet air to reduce a temperature of inlet air to the main compressor and thus increase the combustion turbine assembly power.
Description
technical field [0001] This invention relates to gas turbine power systems, and more particularly to increasing the power of the system by reducing the air temperature at the inlet of the main compressor of the system. Background technique [0002] It is known that the power generation system of the gas turbine will decrease significantly with the increase of the outside temperature or in the case of high altitude. This power loss is mainly related to the degraded quality of the intake airflow to the gas turbine power generation system due to the decrease in the density of the incoming outside air. [0003] Various techniques exist to pre-condition the intake air to recover the power loss of the gas turbine due to the high ambient temperature / altitude. For example: evaporative coolant, inlet atomization, and "wet compression" technologies provide power augmentation by increasing mass flow through the gas turbine through a combination of intake air humidification and cooling...
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IPC IPC(8): F02C3/04F02C6/00F02C7/04
CPCY02E20/16F02C6/16Y02E60/15Y02E60/16
Inventor 米歇尔·纳哈姆京
Owner DRESSER RAND CO