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Title: Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines

Abstract

Laboratory experiments have been conducted to investigate the fuel effects on the turbulent premixed flames produced by a gas turbine low-swirl injector (LSI). The lean-blow off limits and flame emissions for seven diluted and undiluted hydrocarbon and hydrogen fuels show that the LSI is capable of supporting stable flames that emit < 5 ppm NO{sub x} ({at} 15% O{sub 2}). Analysis of the velocity statistics shows that the non-reacting and reacting flowfields of the LSI exhibit similarity features. The turbulent flame speeds, S{sub T}, for the hydrocarbon fuels are consistent with those of methane/air flames and correlate linearly with turbulence intensity. The similarity feature and linear S{sub T} correlation provide further support of an analytical model that explains why the LSI flame position does not change with flow velocity. The results also show that the LSI does not need to undergo significant alteration to operate with the hydrocarbon fuels but needs further studies for adaptation to burn diluted H{sub 2} fuels.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Environmental Energy Technologies Division
OSTI Identifier:
929721
Report Number(s):
LBNL-377E
TRN: US200812%%780
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: 31st International Symposium on Combustion, Heidelberg, Germany, August 6-11, 2006
Country of Publication:
United States
Language:
English
Subject:
20; COMBUSTION; FLAMES; GAS TURBINES; HYDROCARBONS; HYDROGEN FUELS; STATISTICS; TURBULENCE; VELOCITY

Citation Formats

Littlejohn, David, Littlejohn, David, and Cheng, R K. Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines. United States: N. p., 2007. Web.
Littlejohn, David, Littlejohn, David, & Cheng, R K. Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines. United States.
Littlejohn, David, Littlejohn, David, and Cheng, R K. 2007. "Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines". United States. https://www.osti.gov/servlets/purl/929721.
@article{osti_929721,
title = {Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines},
author = {Littlejohn, David and Littlejohn, David and Cheng, R K},
abstractNote = {Laboratory experiments have been conducted to investigate the fuel effects on the turbulent premixed flames produced by a gas turbine low-swirl injector (LSI). The lean-blow off limits and flame emissions for seven diluted and undiluted hydrocarbon and hydrogen fuels show that the LSI is capable of supporting stable flames that emit < 5 ppm NO{sub x} ({at} 15% O{sub 2}). Analysis of the velocity statistics shows that the non-reacting and reacting flowfields of the LSI exhibit similarity features. The turbulent flame speeds, S{sub T}, for the hydrocarbon fuels are consistent with those of methane/air flames and correlate linearly with turbulence intensity. The similarity feature and linear S{sub T} correlation provide further support of an analytical model that explains why the LSI flame position does not change with flow velocity. The results also show that the LSI does not need to undergo significant alteration to operate with the hydrocarbon fuels but needs further studies for adaptation to burn diluted H{sub 2} fuels.},
doi = {},
url = {https://www.osti.gov/biblio/929721}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Dec 03 00:00:00 EST 2007},
month = {Mon Dec 03 00:00:00 EST 2007}
}

Conference:
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