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Title: Use of exhaust gas recirculation as a control approach for thermoacoustic instabilities

Abstract

Investigation into exhaust gas recirculation (EGR) as a method for reducing costs of postcombustion carbon capture in gas turbine systems reveals that EGR offers potential applications as a control strategy for thermoacoustic instabilities. Introduction of EGR allows semi-independent variation of the operating parameter of flame temperature and characteristic flame length scales, known to play a primary role in the phase of the thermoacoustic coupling mechanism. Measurements were made showing the ability of EGR to reduce the amplitude of thermoacoustic oscillations over a range of operating conditions in a laboratory scale, swirled dump combustor, without affecting the flame temperature. Theoretical analysis was also performed to investigate the limitations on the ability of this approach to influence dynamics.

Authors:
;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1036496
Report Number(s):
NETL-PUB-139
TRN: US201206%%340
Resource Type:
Conference
Resource Relation:
Conference: Eastern States Section of the Combustion Institute Fall Technical Meeting, Storrs, CT, October 9-12, 2011
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY AND ECONOMY; AMPLITUDES; CARBON; COMBUSTION; COMBUSTION PROPERTIES; FLAMES; GAS TURBINES; OSCILLATIONS

Citation Formats

Ranalli, J, and Ferguson, D. Use of exhaust gas recirculation as a control approach for thermoacoustic instabilities. United States: N. p., 2011. Web.
Ranalli, J, & Ferguson, D. Use of exhaust gas recirculation as a control approach for thermoacoustic instabilities. United States.
Ranalli, J, and Ferguson, D. 2011. "Use of exhaust gas recirculation as a control approach for thermoacoustic instabilities". United States.
@article{osti_1036496,
title = {Use of exhaust gas recirculation as a control approach for thermoacoustic instabilities},
author = {Ranalli, J and Ferguson, D},
abstractNote = {Investigation into exhaust gas recirculation (EGR) as a method for reducing costs of postcombustion carbon capture in gas turbine systems reveals that EGR offers potential applications as a control strategy for thermoacoustic instabilities. Introduction of EGR allows semi-independent variation of the operating parameter of flame temperature and characteristic flame length scales, known to play a primary role in the phase of the thermoacoustic coupling mechanism. Measurements were made showing the ability of EGR to reduce the amplitude of thermoacoustic oscillations over a range of operating conditions in a laboratory scale, swirled dump combustor, without affecting the flame temperature. Theoretical analysis was also performed to investigate the limitations on the ability of this approach to influence dynamics.},
doi = {},
url = {https://www.osti.gov/biblio/1036496}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Oct 09 00:00:00 EDT 2011},
month = {Sun Oct 09 00:00:00 EDT 2011}
}

Conference:
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