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New possibilities for combined cycles through advanced steam technology
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2002 (English)In: American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, Amsterdam, 2002, Vol. 2 B, 647-654 p.Conference paper, Published paper (Refereed)
Abstract [en]

In order to improve the performance of the combined cycle, much effort has been spent over the past decade on increasing gas turbine performance. As a contrast to this, the present work focuses on possibilities for combined cycle performance enhancement through present and expected future steam cycle and boiler technology. The use of various heat recovery steam generators, (single and dual pressure) with or without supplementary firing are studied, in combination with steam turbine admission temperatures of up till 973 K. Supplementary firing is applied either in the entire gas turbine exhaust duct or in part of it, in a so-called split-stream boiler (SSB). Furthermore, the flashing of pressurized water from an overdimensional economiser in the SSB, to produce steam for gas turbine vane cooling is studied. Many of the supplementary fired cycles studied are found to have a thermal efficiency superior of the unfired cycles, based on the same gas turbines. Hence, available steam technology and expected future development mean that most of the cycles studied are realistic concepts that merit further attention in the quest for more efficient power production.

Place, publisher, year, edition, pages
Amsterdam, 2002. Vol. 2 B, 647-654 p.
Series
ASME TURBO EXPO 2002: Controls, Diagnostics and Instrumentation, Cycle Innovations, Marine, Oil and Gas Applications
Keyword [en]
Ducts, Economizers, Gas fired boilers, Gas turbines, High temperature operations, Intake systems, Steam generators, Thermodynamic properties, Turbomachine blades, Waste heat utilization, Advanced steam technology, Combined cycles, Heat recovery steam generators, Split-stream boiler, Steam turbines
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-53555OAI: oai:DiVA.org:kth-53555DiVA: diva2:470347
Note
Sponsors: The International Gas Turbine Institute NR 20140805Available from: 2011-12-28 Created: 2011-12-28 Last updated: 2011-12-28Bibliographically approved

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Energy Engineering

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf