Gas turbine cooling system

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:874020

Bancalari, Eduardo E ^[1]

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1. Orlando, FL

A gas turbine engine (10) having a closed-loop cooling circuit (39) for transferring heat from the hot turbine section (16) to the compressed air (24) produced by the compressor section (12). The closed-loop cooling system (39) includes a heat exchanger (40) disposed in the flow path of the compressed air (24) between the outlet of the compressor section (12) and the inlet of the combustor (14). A cooling fluid (50) may be driven by a pump (52) located outside of the engine casing (53) or a pump (54) mounted on the rotor shaft (17). The cooling circuit (39) may include an orifice (60) for causing the cooling fluid (50) to change from a liquid state to a gaseous state, thereby increasing the heat transfer capacity of the cooling circuit (39).

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: FC21-95MC32267
• Assignee: Siemens Westinghouse Power Corporation (Orlando, FL)
• Patent Number(s): US 6295803
• OSTI ID: 874020
• Country of Publication: United States
• Language: English

Related Subjects

gas
turbine
cooling
engine
10
closed-loop
circuit
39
transferring
heat
hot
section
16
compressed
air
24
produced
compressor
12
exchanger
40
disposed
flow
path
outlet
inlet
combustor
14
fluid
50
driven
pump
52
located
outside
casing
53
54
mounted
rotor
shaft
17
orifice
60
causing
change
liquid
gaseous
increasing
transfer
capacity
turbine section
transferring heat
cooling fluid
compressed air
turbine engine
heat exchange
heat exchanger
heat transfer
gas turbine
flow path
located outside
cooling circuit
rotor shaft
closed-loop cooling
loop cooling
/60/415/