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Combined cycle power plant

A combined cycle power generation and equipment technology, applied in mechanical equipment, combined combustion mitigation, engine components, etc., can solve problems such as limitations

Inactive Publication Date: 2010-06-09
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known to utilize flow fins to assist the rate of heat transfer from the hot turbine exhaust to the feedwater in the tube bundle, however, the overall heat transfer is limited by the cold side surface area as well as the surface area conditions within the tubes

Method used

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  • Combined cycle power plant
  • Combined cycle power plant
  • Combined cycle power plant

Examples

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Embodiment Construction

[0032] Referring now to the drawings, wherein like numerals indicate like elements throughout the views, figure 1 and figure 2 A combined cycle power plant 10 is shown. Power plant 10 includes a gas turbine system 12 with a combustion system 14 and a turbine 16 . Power plant 10 also includes a steam turbine system 18 . The steam turbine system 18 drives a generator 20 that produces electrical power. Gas turbine system 12 , steam turbine system 18 , and generator 20 may be arranged on a single shaft 22 . Other configurations such as multiple shafts may be used.

[0033] The gas turbine system 12 and the steam turbine system 18 are associated with a heat recovery steam generator (“HRSG”) 24 . HRSG 24 is a heat exchanger having an exhaust gas flow duct 28 defined by walls 26 . A heating system 34 is associated with the HRSG and is the mechanism through which feedwater 36 flows for heating into steam, as described in further detail below. A series of heat pipes 30 have a f...

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PUM

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Abstract

A combined cycle power plant includes a gas turbine, a steam turbine and a heat recovery generator, for thermally connecting the gas turbine and the steam turbine. The heat recovery steam generator has a duct for receiving hot exhaust gas from the gas turbine. The heat recovery steam generator is also associated with a heating system for receiving feed water for heating to steam. A heat pipe having a first end disposed within the duct operates to remove heat there from. A second end of the heat pipe disposed within the heating system operates to transfer heat to the feed water.

Description

technical field [0001] The subject matter disclosed herein relates to a combined cycle power plant, and more particularly, to a heat recovery system for increased output and efficiency. Background technique [0002] Combined cycle power plants utilize gas turbines and steam turbines in a combined manner to generate electricity. The power plant is arranged such that the gas turbine is thermally connected to the steam turbine through a heat recovery system, such as a heat recovery steam generator ("HRSG"). The HRSG is a heat exchanger that allows the feedwater for the steam generation process to be heated by the hot gas turbine exhaust. HRSGs are essentially large pipes with water-filled tube bundles disposed within them. Feedwater is circulated through the tube bundle so that as the exhaust gas passes through the tubes and over the tube bundle, the water is heated to steam. The primary efficiency of the combined cycle arrangement is the utilization of "wasted" gas turbine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K23/10F02C6/18
CPCF01K23/16Y02E20/16F05B2220/702F01K23/10F05D2260/208F02C6/18F05D2220/72F05B2260/208
Inventor 张华J·拉纳辛赫
Owner GENERAL ELECTRIC CO