Griffiths, Jonathan, Riley, Mike, Kirk, Antony, Borman, Alexander, Lawrence, Jonathan and Dowding, Colin (2014) Lean burn limit and time to light characteristics of laser ignition in gas turbines. Optics and Lasers in Engineering, 55. pp. 262-266. ISSN 0143-8166

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Abstract

This work details a study of laser ignition in a low pressure combustion test rig, representative of an industrial gas turbine (SGT-400, Siemens Industrial Turbomachinery Ltd.) and for the first time investigates the effect of air mass flow rate on combustion characteristics at air/fuel ratios at the lean burn limit. Both the lean burn limit and time taken to light are essential in determining the suitability of a specified air/fuel ratio, especially in multi-chamber ignition applications. Through extension of the lean burn limit and reduction of the time taken to light, the operating window for ignition with regards to the air/fuel ratio can be increased, leading to greater reliability and repeatability of ignition. Ignition of a natural gas and air mixture at atmospheric pressure was conducted using both a standard high energy igniter and a laser ignition system utilizing a Q-switched Nd:YAG laser source operating at 1064 nm wavelength. A detailed comparison of the lean burn limit and time taken to light for standard ignition and laser ignition is presented.

Item Type:	Article
Faculty \ School:
Depositing User:	LivePure Connector
Date Deposited:	09 Feb 2022 09:30
Last Modified:	11 May 2022 00:44
URI:	https://ueaeprints.uea.ac.uk/id/eprint/83364
DOI:	10.1016/j.optlaseng.2013.11.016

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