US6178735B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined cycle power plant
Assignee: Alstom SA
•
Filing: 1998-12-10
•
Granted: 2001-01-30
•
Expires: 2018-12-10
Abstract
Abstract In a method for operating a gas turbo-generator set (GT), the caloric potential of the exhaust gases ( 14 ) from the gas turbo-generator set (GT) is utilized by guiding them through a heat exchanger ( 5 ) which is operatively connected to a hot-air turbo-generator set (LT). A compressor ( 7 ) associated with this hot-air turbo-generator set (LT) is operated isothermally by means of point-focused or continuous water injection ( 24 ), and, after expansion ( 6 ) has taken place, the injected water is collected by condensation ( 19 ) in a separator ( 10 ). A circuit is thus provided, in which the adaptation of assemblies in order to achieve maximized efficiency is avoided.
Inventors
- 👤 Hans Ulrich Frutschi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
F; F02; F02C; F02C1/00; F02C1/04; F02C1/10; F01; F01K; F01K21/00; F01K21/04; F02C1/007; F02C6/00; F02C6/18; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143; F02C7/1435; Y; Y02; Y02E; Y02E20/00; Y02E20/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A method for operating a gas turbo-generator set with single stage or multistage combustion, comprising the steps of providing a heat exchanger for further utilization of the caloric potential of exhaust gases from a turbine associated with the gas turbo-generator set, wherein a hot-air turbo-generator set is operatively connected to the heat exchanger; approximately simulating isothermal compression by water injection which is carried out in a compressor associated with the hot-air turbo-generator set; and after expansion has taken place by an expander, collecting the injected water by condensation in a separator.
Claim 2
Independent Claim
91 words
A method for operating a gas turbo-generator set with single stage or multistage combustion, comprising the steps of providing a heat exchanger for further utilization of the caloric potential of exhaust gases from a turbine associated with the gas turbo-generator set, wherein a hot-air turbo-generator set is operatively connected to the heat exchanger; approximately simulating isothermal compression by water injection which is carried out in a compressor associated with the hot-air turbo-generator set; and after expansion has taken place by an expander, collecting the injected water by condensation in a separator.
Claim 3
Independent Claim
23 words
The method as claimed in claim l, wherein the water is collected in the separator is recirculated for water injection into the compressor.
Claim 4
Dependent Claim
46 words
The method as claim in claim 1 , wherein part of the air occurring from the separator is introduced into the intake air of a compressor associated with the gas turbo-generator set or into the process air of a turbomachine associated with the gas turbo-generator set.
Claim 5
Dependent Claim
25 words
The method as claimed in claim 1 , wherein the air occurring in the separator is introduced into the compressor of the hot-air turbo-generator set.
References Cited (Backward Citations)
FR1007140A
Cited
DE2925091A1
Cited
DE2931178A1
Cited
EP0050687A1
Cited
US4660376A
Cited
US5203160A
Cited
US5386685A
Cited
EP0620362A1
Cited
WO1997004228A1
Cited
EP0770771A1
Cited
US5906095A
Cited
US5884470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |