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 Title: |
US4932204:
Efficiency combined cycle power plant
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Pavel, James; Lake Mary, FL
Myers, Gerald A.; Longwood, FL
Baldwin, Theodore S.; Casselberry, FL
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| Assignee: |
Westinghouse Electric Corp., Pittsburgh, PA
other patents from WESTINGHOUSE ELECTRIC CORP. (625115) (approx. 12,106)
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| Published / Filed: |
1990-06-12
/ 1989-04-03
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| Application Number: |
US1989000332195
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| IPC Code: |
Advanced:
F01K 23/10;
F02C 7/224;
Core:
more...
IPC-7:
F02C 6/18;
F02C 7/224;
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| U.S. Class: |
Current:
060/772;
060/039.182;
060/736;
Original:
060/039.02;
060/039.182;
060/736;
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| Field of Search: |
060/39.02,39.182,736,39.511
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| Priority Number: |
| 1989-04-03 |
US1989000332195 |
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| Abstract: |
The efficiency of a combined cycle power plant is improved by preheating fuel supplied to a combustion turbine. The flow rate of feed water through an economizer section of a heat recovery steam generator is increased, and the excess flow, over that required to sustain saturated steam production in an evaporator section, is flowed through a heat exchanger to preheat the fuel.
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| Attorney, Agent or Firm: |
Bach, K. ;
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| Primary / Asst. Examiners: |
Stout, Donald E.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 9 known family members
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First Claim:
Show all 14 claims |
We claim as our invention:
1. Method of operating a combined cycle power plant comprising the steps of:
- (a) flowing exhaust gas from a combustion turbine through a heat recovery steam generator (HRSG);
- (b) flowing feed water through an economizer section of the HRSG at a flow rate and providing heated feed water;
- (c) flowing a first portion of the heated feed water through an evaporator section of the HRSG and producing saturated steam at a production rate, the flow rate of the feed water through the economizer section being greater than required to sustain the production rate of steam in the evaporator section;
- (d) flowing fuel for the turbine through a heat exchanger; and,
- (e) flowing a second portion of the heated feed water provided by the economizer section through the heat exchanger then to an inlet of the economizer section, thereby heating the fuel flowing through the heat exchanger.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 24 U.S. patent(s) that reference this one
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| Foreign References: |
Buy
PDF |
Publication |
Date |
IPC Code |
Assignee |
Title |
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JP55035108
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1980-03 |
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JP55125325
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1980-09 |
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JP60198337
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1985-10 |
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| Other References: |
American Society of Mechanical Engineers, Publication No. 84-GT-201, Entitled "Acceptance Criteria For Heat Recovery Steam Generators Behind Gas Turbines", Pasha, Akber (1986).
American Society of Mechanical Engineers, Publication No. 84-GT-126, entitled, "Design of Gas Turbine Exhaust Heat Recovery Boiler Systems", Deltak Corporation, Minneapolis, MN (1984).
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