Cart (Loading....) | Create Account
Close category search window
 

Microwave Plasma Enhancement of Various Flame Geometries at Atmospheric Pressure

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hammack, S. ; Dept. of Mech. Eng., Michigan State Univ., East Lansing, MI, USA ; Tonghun Lee ; Carter, C.

A plasma-coupled methane-air flame is produced at atmospheric pressure by a microwave plasma source utilizing a tunable waveguide. Laser diagnostics are used to examine the direct-coupled, plasma-ignited, and sustained flame, for multiple flame types and nozzle geometries. OH radical number densities are quantified using planar laser-induced fluorescence and temperature measured by Rayleigh scattering thermometry. Premixed and nonpremixed flames are studied using both solid and hollow inner conductors in the plasma-applicating nozzle. The plasma source is powered by a continuous 2.45-GHz magnetron producing 360 W of power. Plasma power is controlled by adjusting the reflected microwave power, measured at a dummy load attached to a circulator. Maximum OH radical number densities were quantified as approximately (3 - 5) × 1016 cm-3 for plasma powers around 100 W, with small variation between configurations. The maximum temperatures occurred in the nonpremixed flame, where the plasma is generated in air, reaching values of 3500 K. Temperatures are lower, peaking at 2000 K, when the plasma is generated at the air-fuel boundary or the air-premixed boundary through use of the hollow inner conductor. Additional parameters are adjusted, including flow rates, power level, and equivalence ratio, and the effects are discussed. Nonpremixed configurations are ill suited for flame enhancement, whereas a premixed flow through the hollow electrode best demonstrates nonthermal plasma-assisted combustion.

Published in:

Plasma Science, IEEE Transactions on  (Volume:40 ,  Issue: 12 )

Date of Publication:

Dec. 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.