SRI International

Laser-Based Imaging of Species and Temperature During Gas-Fired Combustion

SRI assisted Tokyo Gas in developing optical temperature and species measurement and imaging strategies that will monitor the reacting gas flow in burners and flames. These new gas sensing tools will aid the design of new generations of combustors for a variety of applications, particularly the development of materials processing furnaces with homogeneous temperature distribution. Measurements of gas temperature are vital to ensure a uniform temperature distribution and to evaluate and understand the combustion processes in the furnace such as NOx production.

The research was performed in SRI's laboratories in collaboration with a visiting scientist from Tokyo Gas. Rayleigh scattering and Laser-induced-fluorescence (LIF) experiments were performed on the hydroxyl radical (OH) and the nitric oxide molecule (NO) and were accompanied by modeling studies to test field strategies for temperature measurements. We have found that such collaborative investigations provide effective means both for technology development and for transfer of knowledge and experience for practical applications.

Principal Investigator

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