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Title: Gas turbine power plant with supersonic shock compression ramps

Abstract

A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.

Inventors:
 [1];  [2];  [3]
  1. Bellevue, WA
  2. San Diego, CA
  3. Kirkland, WA
Issue Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
985406
Patent Number(s):
7434400
Application Number:
11/102,937
Assignee:
Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC026-00NT40915
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS

Citation Formats

Lawlor, Shawn P, Novaresi, Mark A, and Cornelius, Charles C. Gas turbine power plant with supersonic shock compression ramps. United States: N. p., 2008. Web.
Lawlor, Shawn P, Novaresi, Mark A, & Cornelius, Charles C. Gas turbine power plant with supersonic shock compression ramps. United States.
Lawlor, Shawn P, Novaresi, Mark A, and Cornelius, Charles C. Tue . "Gas turbine power plant with supersonic shock compression ramps". United States. https://www.osti.gov/servlets/purl/985406.
@article{osti_985406,
title = {Gas turbine power plant with supersonic shock compression ramps},
author = {Lawlor, Shawn P and Novaresi, Mark A and Cornelius, Charles C},
abstractNote = {A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {10}
}

Patent:

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