- Author
-
Koylu, U. O.
|
Faeth, G. M.
- Title
- Properties of Carbon Monoxide and Soot Emissions From Buoyant Turbulent Diffusion Flames.
- Coporate
- Michigan Univ., Ann Arbor
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
GDL/GMF-91-02
October 1991
70 p.
- Contract
- NBS-GRANT-60NANB8DO833
- Keywords
-
carbon monoxide
|
soot
|
diffusion flames
|
turbulent flames
|
emissions
- Abstract
- An investigation of the properties of carbon monoxide and soot emissions from buoyant turbulent diffusion flames is described. These emissions are important because they are major contributors to fire hazards: inhalation of carbon monoxide is the main cause of fire fatalities, continuum radiation from soot increases fire growth and burning rates, and soot-laden smoke obscures fire fighting efforts. The study was divided into two phases, considering carbon monoxide and soot emissions, and the structure of overfire soot, respectively. In the first phase of the study, carbon monoxide concentrations, soot concentrations and mixture fractions were measured in the fuel-lean (overfire) region of liquid-fueled buoyant turbulent diffusion flames burning in still air, to extend earlier results for gas-fueled flames. In the second phase of the study, the structure of soot was measured within the fuel-lean (overfire) region of overventilated buoyant turbulent diffusion flames burning in still air. The study was limited to the long residence time regime where charactertistic flame residence times are roughly more than an order of magnitude longer than the laminar smoke point residence time and soot generation factors are relatively independent of flame residence times.