# US 10,119,472 B2 · Gas turbine energy supplementing systems and heating systems, and methods of making and using the same

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- Number: US 10,119,472 B2
- Document ID: US10119472B2
- Status: Granted
- Kind: B2
- Application number: 14/351,245
- Filed: 2013-10-21
- Published: 2015-08-20
- Granted: 2018-11-06
- Earliest claimed: 2012-10-26
- Assignees: Powerphase LLC
- Applicants: Powerphase LLC
- Inventors: Robert J. Kraft
- Web page: https://patentgrep.com/patent/US10119472B2

## CPC

- F02C 7/22: Fuel supply systems
- F02C 9/50: with control of working fluid flow
- F02C 9/52: by bleeding or by-passing the working fluid
- F05D 2270/06: to match engine to driven device
- F05D 2270/071: in particular at idling speed
- F05D 2270/082: with as little NOx as possible
- F05D 2270/331: Mechanical loads
- Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E 60/16: Mechanical energy storage, e.g. flywheels or pressurised fluids
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Electrical power systems, including generating capacity of a gas turbine, where additional electrical power is generated utilizing a separately fueled system during periods of peak electrical power demand.

## Claims

### Claim 1

A method of operating a gas turbine energy system comprising:
(a) operating a gas turbine system comprising a compressor, a combustor case, a combustor, and a turbine, fluidly connected to each other;
(b) pressurizing ambient air using a supplemental compressor driven by a fueled engine;
(c) injecting said pressurized air into a rotor cooling air circuit upstream of a rotor air cooler; and
(d) adding exhaust of the fueled engine to exhaust of the turbine, the fueled engine exhaust bypassing the combustor.

### Claim 2 (depends on 1)

The method of claim 1, wherein said pressurized air is not heated by said fueled engine.

### Claim 3 (depends on 1)

The method of claim 1, wherein injecting said pressurized air from said supplemental compressor into said rotor cooling air circuit increases mass flow through said combustor.

### Claim 4 (depends on 1)

The method of claim 1, wherein injecting said pressurized air upstream of said rotor cooling air circuit, minimizes heat rejected from said rotor cooling air circuit.

### Claim 5 (depends on 1)

The method of claim 1, wherein said pressurized air has a lower temperature than a compressed air in said rotor cooling air circuit.

### Claim 6

A method of operating a gas turbine energy system comprising:
(a) operating a gas turbine system comprising a compressor, a combustor case, a combustor, and a turbine, fluidly connected to each other;
(b) pressurizing ambient air using a supplemental compressor driven by a fueled engine;
(c) injecting said pressurized air into a rotor cooling air circuit; and
(d) adding exhaust of the fueled engine to exhaust of the turbine, the fueled engine exhaust bypassing the combustor.

### Claim 7 (depends on 6)

The method of claim 6, wherein the pressurized air is injected upstream of a rotor air cooler.

### Claim 8 (depends on 7)

The method of claim 7, wherein injecting said pressurized air minimizes heat rejected from said rotor cooling air circuit.

### Claim 9 (depends on 6)

The method of claim 6, wherein said pressurized air is not heated by said fueled engine.

### Claim 10 (depends on 6)

The method of claim 6, wherein injecting said pressurized air from said supplemental compressor into said rotor cooling air circuit increases mass flow through said combustor.

### Claim 11 (depends on 6)

The method of claim 6, wherein said pressurized air has a lower temperature than a compressed air in said rotor cooling air circuit.