Wave Engine Aerothermodynamic Design

Weber, H. E.

doi:10.1115/1.2906658

Cited by 4 publications

(1 citation statement)

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“…Again energy exchangers turn out to be a favorable concept. Weber (1992) also predicts high cycle efficiencies for wave engines with low precompression ratios.…”

Section: Introductionmentioning

confidence: 87%

Gas Turbine Topping Stage Based on Energy Exchangers: Process and Performance

Zauner

Chyou

Walraven

et al. 1993

Volume 2: Combustion and Fuels; Oil and Gas Applications; Cycle Innovations; Heat Transfer; Electric Power; Industrial and Coge

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Power generation in gas turbines is facing three main challenges today: • Low pollution prescribed by legal requirements. • High efficiency to obtain low operating cost and low CO2 emissions. • High specific power output to obtain low product and installation cost. Unfortunately, some of these requirements are contradictory: high efficiency and specific power force the development towards higher temperatures and pressures which increase NOx emissions and intensify the cooling and material strength problems. A breakthrough can be achieved by applying an energy exchanger as a topping stage. Inherent advantages are the self-cooled cell-rotor which can be exposed to much higher gas temperature than a steady-flow turbine and a very short residence time at peak temperature which keeps NOx emissions under control. The basic idea has been proposed long time ago. Fundamental research has now led to a new energy exchanger concept. Key issues include symmetric pressure-wave processes, partial suppression of flow separation and fluid mixing, as well as quick afterburning in premixed mode. The concept has been proven in a laboratory-scale engine with very promising results. The application of an energy exchanger as a topping stage onto existing gas turbines would increase the efficiency by 17% (relative) and the power by 25%. Since the temperature level in the turbine remains unchanged, the performance improvement can also be fully utilized in combined cycle applications. This process indicates great potentials for developing advanced gas turbine systems as well as for retrofitting existing ones.

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“…Again energy exchangers turn out to be a favorable concept. Weber (1992) also predicts high cycle efficiencies for wave engines with low precompression ratios.…”

Section: Introductionmentioning

confidence: 87%

Gas Turbine Topping Stage Based on Energy Exchangers: Process and Performance

Zauner

Chyou

Walraven

et al. 1993

Volume 2: Combustion and Fuels; Oil and Gas Applications; Cycle Innovations; Heat Transfer; Electric Power; Industrial and Coge

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Basic design scheme for wave rotors

2008

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Wave engine topping cycle assessment

Welch

1997

35th Aerospace Sciences Meeting and Exhibit

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The performance benefits derived by topping a gas CPR turbine engine with a wave engine are assessed. The c wave engine is a wave rotor that produces shaft power cR by exploiting gas dynamic energy exchange and flow Unclassified NSN 7540-01-280-5500 18. SECURITY CLASSIFICATION OF THIS PAGE Unclassified 19. SECURITY CLASSIFICATION OF ABSTRACT Unclassified 15. NUMBER OF PAGES 16 16. PRICE CODE A03 20. LIMITATION OF ABSTRACT Standard Form 298 (Rev. 2-89) Prescribed by ANSI Std. Z39-18 298-102

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Wave Engine Aerothermodynamic Design

Cited by 4 publications

References 0 publications

Gas Turbine Topping Stage Based on Energy Exchangers: Process and Performance

Gas Turbine Topping Stage Based on Energy Exchangers: Process and Performance

Basic design scheme for wave rotors

Wave engine topping cycle assessment

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