Soot surface temperature measurements in pure and diluted flames at atmospheric and elevated pressures

T. L Berry Yelverton, William Roberts

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Soot surface temperature was measured in laminar jet diffusion flames at atmospheric as well as elevated pressures conditions. These two dimensional temperature profiles of the soot aid in the analysis and understanding of soot production, leading to possible methods for reducing soot emission. The soot surface temperature was measured in flames at one, two, four, and eight atmospheres with both pure and diluted (using helium, argon, nitrogen, or carbon dioxide individually) ethylene fuels with a calibrated twocolor soot pyrometry technique. Each flame investigated was at its smoke point, i.e., at the fuel flow rate where the overall soot production and oxidation rates are equal. The smoke point was chosen because it was desirable to have similar soot loadings for each flame. A second set of measurements were also taken where the fuel flow rate was held constant to compare with earlier work. These measurements show that overall flame temperature decreases with increasing pressure, with increasing pressure the position of peak temperature shifts to the tip of the flame, and the temperatures measured were approximately 10% lower than those calculated assuming equilibrium and neglecting radiation.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages2552-2562
Number of pages11
ISBN (Electronic)9781604238112
StatePublished - Jan 1 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007
Volume4

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period03/25/0703/28/07

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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