Radiative Heat Transfer Modeling and in Situ Diagnostics of Soot in an 80 kWth Propane Flame with Varying Feed-Gas Oxygen Concentration
Journal article, 2018

This work presents experimental measurements of various 80 kWth propane flames, using a swirl burner, and modeling of the radiative heat transfer. The combustion conditions were altered by varying the oxygen concentration in the oxidant within range of 21-32%, while keeping the thermal input and oxygen-to-fuel ratio constant. Temperature, gas composition, and radiative intensity were measured using probes, while the soot volume fraction was quantified using nonintrusive laser-induced incandescence. The radiative intensity and the soot volume fraction increased with an increased oxygen concentration in the flame. When the oxygen concentration exceeded 27% the soot volume fraction was increased more than 14-fold. The results reveal the potential of promoting radiative heat transfer by increasing the oxygen concentration; the total radiative intensity becomes dominated by the soot particle contribution. In addition, laser-induced incandescence was successfully used for instantaneous and spatially resolved soot measurements in this type of furnace being at a technical scale.


Adrian Gunnarsson

Chalmers, Space, Earth and Environment, Energy Technology

Johan Simonsson

Lund University

Daniel Bäckström

Chalmers, Space, Earth and Environment, Energy Technology

Manu Naduvil Mannazhi

Lund University

P. E. Bengtsson

Lund University

Klas Andersson

Chalmers, Space, Earth and Environment, Energy Technology

Industrial & Engineering Chemistry Research

0888-5885 (ISSN) 1520-5045 (eISSN)

Vol. 57 36 12288-12295

Subject Categories

Chemical Process Engineering

Atom and Molecular Physics and Optics

Metallurgy and Metallic Materials



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