Jason L Shaffer

US Patent:

20170167376, Jun 15, 2017

Filed:

Dec 15, 2015

Appl. No.:

14/969067

Inventors:

- Schenectady NY, US
Michael Anthony Cocca - Atlanta GA, US
Alston Ilford Scipio - Mableton GA, US
Sanji Ekanayake - Mableton GA, US
Jason Brian Shaffer - Smyrna GA, US

International Classification:

F02C 6/06
F01D 25/30
H02K 7/18
F02C 6/18
F02C 3/04

Abstract:

A power plant includes a turbine having a plurality of turbine stages and an extraction port in fluid communication with one or more of the turbine stages. The extraction port provides a flow path for a stream of combustion gas to flow out of the turbine. An exhaust duct is disposed downstream from the turbine and receives exhaust gas from the turbine. The exhaust duct is fluid communication with the extraction port. A coolant injection system injects a coolant into the stream of combustion gas to provide cooled combustion gas to the exhaust duct. The cooled combustion gas flows into the exhaust duct at a temperature that is higher than a temperature of the exhaust gas, thereby increasing the temperature of the exhaust gas within the exhaust duct. The increase in thermal energy may be used to produce steam downstream from the exhaust duct.

US Patent:

20170167379, Jun 15, 2017

Filed:

Dec 15, 2015

Appl. No.:

14/969142

Inventors:

- Schenectady NY, US
Sanji Ekanayake - Mableton GA, US
Jason Brian Shaffer - Smyrna GA, US
Joseph Philip Klosinski - Kennesaw GA, US
George Vargese Mathai - Atlanta GA, US

International Classification:

F02C 6/08
F01D 25/30
H02K 7/18
F02C 6/18
F02C 3/04

Abstract:

A power plant includes a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor. The compressor includes a compressor extraction port. The turbine includes a turbine extraction port that is in fluid communication with a hot gas path of the turbine and which provides a flow path for a stream of combustion gas to flow out of the turbine. An exhaust duct is disposed downstream from the turbine and receives exhaust gas from the turbine. A static mixer coupled to the turbine extraction port and to the compressor extraction port cools the stream of combustion gas upstream from the exhaust duct. The cooled combustion gas flows into the exhaust duct at a higher temperature than the exhaust gas and mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger downstream from the exhaust duct.

US Patent:

20150322866, Nov 12, 2015

Filed:

May 12, 2014

Appl. No.:

14/274885

Inventors:

- Schenectady NY, US
Robert Frank Hoskin - Atlanta GA, US
Jason Brian Shaffer - Atlanta GA, US
Sanji Ekanayake - Atlanta GA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 9/18
F02C 7/18

Abstract:

The present application provides a gas turbine engine for low turndown operations. The gas turbine engine may include a compressor with a compressor bleed air flow, a turbine compartment with a turbine compartment air flow, a turbine, and an eductor. The eductor blends the compressor bleed air flow and the turbine compartment air flow into a blended air flow for use in cooling the turbine.