Method and apparatus for operating an intercooler for a gas turbine engine

• US 7,284,377 B2
• Filed: 05/28/2004
• Issued: 10/23/2007
• Est. Priority Date: 05/28/2004
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Held, Timothy James, Joshi, Narendra Digamber, Reale, Michael Joseph, Wolf, David Paul
• Primary Examiner(s): KIM, TAE JUN
• Application Number:
  US10/856,640
• Publication Number:
  US 20050262848A1
• Time in Patent Office: 1,243 Days
• Field of Search: 607/75, 60/395.5, 607/28, 607/36
• US Class Current: 60/775
• CPC Class Codes: F02C 3/305 Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids F01K21/04 takes precedence
• CPC Class Codes: F02C 7/143 before or between the compressor stages
• CPC Class Codes: F02C 7/224 Heating fuel before feeding to the burner
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft

Abstract

A method for operating a gas turbine engine includes channeling compressed airflow discharged from a first compressor through an intercooler having a cooling medium flowing therethrough, channeling a working fluid through the intercooler to facilitate increasing an operating temperature of the working fluid, and channeling the discharged working fluid to a combustor to facilitate increasing an operating efficiency of the gas turbine engine.

Claims

1. A method for operating a gas turbine engine, said method comprising:

channeling compressed airflow discharged from a first compressor through an intercooler having a cooling medium flowing therethrough, wherein the first compressor is coupled to a first turbine via a first shaft;

channeling the compressed airflow discharged from the intercooler into a second compressor, wherein the second compressor is coupled to a second turbine via a second shaft;

channeling water through the intercooler to facilitate increasing an operating temperature of the water; and

channeling the discharged water directly from the intercooler in its entirety into a combustor to facilitate increasing a thermal efficiency of the gas turbine engine and to facilitate reducing nitrogen oxide emissions and channeling fuel through the intercooler to facilitate increasing an operating temperature of the fuel.

2. A method in accordance with claim 1 wherein channeling the discharged water to the combustor further comprises channeling water through the intercooler to the combustor to facilitate increasing an operating efficiency of the gas turbine engine.

3. A method in accordance with claim 2 further comprising channeling the water from a storage tank, through a pump, to the intercooler to facilitate increasing an operating efficiency of the gas turbine engine.

4. A method in accordance with claim 1 wherein the combustor is at least one of an annular combustor and a can-annular combustor, and channeling fuel through the intercooler further comprises channeling heated fuel to at least one of the annular combustor and the can-annular combustor to facilitate increasing a thermal efficiency of the gas turbine engine.

5. A method in accordance with claim 1 wherein channeling a water through the intercooler to facilitate increasing an operating temperature of the working fluid further comprises:

heating the water using the first compressor discharge air; and

channeling the heated water into the combustor to facilitate increasing a thermal efficiency of the gas turbine engine.

6. An intercooler system for a gas turbine engine that includes at least a first compressor, a second compressor, a combustor, and a turbine, said intercooler system comprising:

an intercooler coupled downstream from the first compressor such that compressed air discharged from the first compressor is routed therethrough, wherein the first compressor is coupled to a first turbine via a first shaft, said intercooler coupled upstream from the second compressor and wherein the second compressor is coupled to a second turbine via a second shaft; and

a heating system in flow communication with said intercooler, said heating system configured to;

channeling water through said intercooler to facilitate increasing an operating temperature of the water;

channel the discharged water directly from the intercooler in its entirety into said combustor to facilitate increasing a thermal efficiency of said gas turbine engine and to facilitate reducing nitrogen oxide emissions; and

said heating system is further configured to channel fuel through said intercooler to facilitate increasing an operating temperature of the fuel.

7. An intercooler system in accordance with claim 6 wherein said heating system is further configured to channel water through said intercooler to said combustor to facilitate increasing an operating efficiency of said gas turbine engine.

8. An intercooler system in accordance with claim 6 further comprising a pump configured to channel the water from a storage tank, through said pump, to said intercooler to facilitate increasing an operating efficiency of said gas turbine engine.

9. An intercooler system in accordance with claim 6 wherein said engine further comprises an annular combustor, said intercooler is further configured to channel heated fuel to said annular combustor to facilitate increasing a thermal efficiency of said gas turbine engine.

10. An intercooler system in accordance with claim 6 wherein said intercooler is further configured to:

heat the water using the first compressor discharge air; and

channel the heated water into said combustor to facilitate increasing a thermal efficiency of said gas turbine engine.

11. A gas turbine engine comprising:

a first compressor;

a first turbine;

a first shaft coupled between said first compressor and said first turbine;

a second compressor downstream from said first compressor;

a second turbine;

a second shaft coupled between said second compressor and said second turbine;

a combustor downstream from said second compressor;

said second turbine coupled in flow communication with said combustor; and

an intercooler system comprising;

an intercooler coupled downstream from the first compressor such that compressed air discharged from the first compressor is routed therethrough; and

a heating system in flow communication with said intercooler, said heating system configured to;

channel water through said intercooler to facilitate increasing an operating temperature of the water;

channel the discharged water directly from the intercooler in its entirety into said combustor to facilitate increasing a thermal efficiency of said gas turbine engine and to facilitate reducing nitrogen oxide emission; and

said heating system is further configured to channel fuel through said intercooler to facilitate increasing an operating temperature of the fuel.

12. A gas turbine engine in accordance with claim 11 wherein said heating system is further configured to channel water through said intercooler to said combustor to facilitate increasing an operating efficiency of said gas turbine engine.

13. A gas turbine engine in accordance with claim 11 further comprising a pump configured to channel the water from a storage tank, through said pump, to said intercooler to facilitate increasing an operating efficiency of said gas turbine engine.

14. A gas turbine engine in accordance with claim 11 wherein said engine further comprises at least one of an annular combustor and a can-annular combustor, said intercooler system is further configured to channel heated fuel to at least one of said annular combustor and can-annular combustor to facilitate increasing a thermal efficiency of said gas turbine engine.