20240018907. COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION INTERCOOLING simplified abstract (General Electric Company)
COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION INTERCOOLING
Organization Name
Inventor(s)
Raub Warfield Smith of Ballston Lake NY (US)
COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION INTERCOOLING - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240018907 titled 'COMBINED CYCLE POWER PLANTS WITH EXHAUST GAS RECIRCULATION INTERCOOLING
Simplified Explanation
The abstract describes a combined cycle power plant that includes a gas turbine engine and a heat recovery steam generator. The gas turbine engine has a compressor with an inlet, an outlet, and an interstage inlet in between. The turbine also has an outlet to discharge a first exhaust gas stream. The heat recovery steam generator receives the first exhaust gas stream, extracts heat from it, and discharges a second exhaust gas stream. The second exhaust gas stream can be recirculated towards the compressor interstage inlet using a recirculation compressor, or an admission compressor can pressurize an air stream directed towards the compressor interstage inlet. A first cooler cools the stream directed to the compressor, providing a cooled stream to the interstage inlet of the compressor.
- The patent describes a combined cycle power plant with a gas turbine engine and a heat recovery steam generator.
- The gas turbine engine has a compressor with an inlet, an outlet, and an interstage inlet.
- The turbine has an outlet to discharge a first exhaust gas stream.
- The heat recovery steam generator extracts heat from the first exhaust gas stream and discharges a second exhaust gas stream.
- The second exhaust gas stream can be recirculated towards the compressor interstage inlet using a recirculation compressor.
- Alternatively, an admission compressor can pressurize an air stream directed towards the compressor interstage inlet.
- A first cooler cools the stream directed to the compressor, providing a cooled stream to the interstage inlet of the compressor.
Potential Applications
- Power generation in combined cycle power plants
- Energy efficiency improvement in gas turbine engines
Problems Solved
- Improved heat recovery from exhaust gas streams
- Enhanced efficiency of gas turbine engines
Benefits
- Increased power generation efficiency
- Reduced fuel consumption
- Lower emissions
- Improved overall performance of combined cycle power plants
Original Abstract Submitted
a combined cycle power plant includes a gas turbine engine that includes a compressor having a compressor inlet, a compressor outlet, and an interstage inlet defined therebetween. the turbine also includes a turbine outlet configured to discharge a first exhaust gas stream therefrom. a heat recovery steam generator is configured to receive the first exhaust gas stream, extract heat from the first exhaust gas stream, and discharge a second exhaust gas stream therefrom. either a recirculation compressor pressurizes a first portion of the second exhaust gas stream for recirculation towards the compressor interstage inlet, or an admission compressor pressurizes an air stream directed towards the compressor interstage inlet. a first cooler cools the stream directed to the compressor, thereby defining a cooled stream, wherein the first cooler provides the cooled stream to the interstage inlet of the compressor.
