Efficiency combined cycle power plant

Patent · Tue Jun 12 04:00:00 EDT 1990

OSTI ID:6889937

Pavel, J; Meyers, G A; Baldwin, T S

This patent describes a method of operating a combined cycle power plant. It comprises: flowing exhaust gas from a combustion turbine through a heat recovery steam generator (HRSG); flowing feed water through an economizer section of the HRSG at a flow rate and providing heated feed water; 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; flowing fuel for the turbine through a heat exchanger; and, 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.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA (USA)
• Patent Number(s): A; US 4932204
• Application Number: PPN: US 7-332195A
• OSTI ID: 6889937
• Country of Publication: United States
• Language: English

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COMBINED-CYCLE POWER PLANTS
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ENERGY EFFICIENCY
ENERGY RECOVERY
EXHAUST GASES
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HYDRAULICS
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