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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Imprimir: 2150-3621
ISSN En Línea: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v4.i4.10
18 pages

EFFECTS OF JET DILUTION AND CO-FLOW ON SOOTING AND EMISSION CHARACTERISTICS OF HYDROCARBON FUELS

S. F. Goh
Combustion and Flame Dynamics Laboratory, School of Aerospace and Mechanical Engineering, University of Oklahoma, 865 Asp Ave., Room 212, University of Oklahoma, Norman, OK 73019
S. Kusadome
Combustion and Flame Dynamics Laboratory, School of Aerospace and Mechanical Engineering, University of Oklahoma, 865 Asp Ave., Room 212, University of Oklahoma, Norman, OK 73019
Subramanyam R. Gollahalli
Combustion and Flame Dynamics Laboratory, School of Aerospace and Mechanical Engineering, 865 Asp Ave, Room 212, The University of Oklahoma, Norman, OK 73019, USA

SINOPSIS

A study was conducted to understand the effects of dilution and co-flow on the sooting and pollutant emission characteristics of hydrocarbon fuels in the vicinity of their smoke point. Measurements of the critical mass flow rate of a fuel at the threshold of smoking and the mass flow rate of the dilution gas (nitrogen) required to suppress smoking at several fractions of the critical fuel mass flow rate were obtained. The curve of the variation of nitrogen flow rate that was required for smoke suppression with fuel flow rate exhibited a skewed bell shape. Two regions, a chemically controlled region and a fluid dynamics-controlled region were identified on this curve. Just prior to the condition at which the flame turned nonsmoking, at the critical (fluid dynamics-controlled region) and at the 30% of the critical fuel mass flow rate (chemically controlled region), flame characteristics including radiation emission, temperature profiles, radial concentration profiles, emission indices of NO, NOx, CO, and flame heights were also measured. Also recorded were the axial profiles of radiation power and soot volume fraction at those conditions. Propylene (C3H6) was used as the fuel in the study. A 3.2 mm ID burner was employed.


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