Feedwater heater control system for improved Rankine cycle power plant efficiency

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9316122
APP PUB NO 20120151926A1
SERIAL NO

12973777

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A steam cycle system comprises a boiler comprising a superheat section, a reheat section, and an economizer section, wherein the boiler is configured to receive a feedwater stream; a steam turbine system comprising a high pressure turbine and a lower pressure turbine, wherein the steam turbine system is configured to receive steam generated by the boiler; a condenser configured to receive at least a portion of the outlet steam from the steam turbine system and output the feedwater stream; a high pressure feedwater heat exchanger configured to receive at least a portion of the feedwater stream, allow for an energy exchange between the portion of the feedwater stream and a steam stream, and output the portion of the feedwater stream to the boiler; a steam extraction line configured to provide a steam flow from an outlet of the high pressure turbine to the high pressure feedwater heater; a feedwater temperature control device configured to control the temperature of the feedwater stream by modulating the energy transfer in the high pressure feedwater heat exchanger between the steam flow provided through the steam extraction line and the portion of the feedwater received by the high pressure feedwater heat exchanger.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INVENSYS SYSTEMS, INC.FOXBORO, MA527

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Labbe, Donald E Woburn, US 7 115

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 2011/0314,819 SYSTEM INCLUDING FEEDWATER HEATER FOR EXTRACTING HEAT FROM LOW PRESSURE STEAM TURBINE 3 2010
 
Power Software Associates, Inc. (1)
* 5836162 Feedwater heater drain recycle system 3 1996
 
Other [Check patent profile for assignment information] (1)
4343682 Plant having feed water heating means for nuclear units during plant start up and method of operating the same 6 1980
 
GENERAL ELECTRIC TECHNOLOGY GMBH (1)
6233939 Method of operating a steam power station 8 2000
 
SIEMENS AKTIENGESELLSCHAFT (1)
2004/0105,518 Method for operating a steam power installation and corresponding steam power installation 3 2003
 
Exergetic Systems LLC (1)
8091361 Method and apparatus for controlling the final feedwater temperature of a regenerative Rankine cycle using an exergetic heater system 13 2008
 
HITACHI, LTD. (1)
* 4651533 Protection-driving method of a feedwater heater and the device thereof 8 1986
* Cited By Examiner

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