Radiative Heat Transfer Modeling and in Situ Diagnostics of Soot in an 80 kWth Propane Flame with Varying Feed-Gas Oxygen Concentration
Artikel i vetenskaplig tidskrift, 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.

Författare

Adrian Gunnarsson

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik

Johan Simonsson

Lunds universitet

Daniel Bäckström

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik

Manu Naduvil Mannazhi

Lunds universitet

P. E. Bengtsson

Lunds universitet

Klas Andersson

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik

Industrial & Engineering Chemistry Research

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

Vol. 57 36 12288-12295

Ämneskategorier

Kemiska processer

Atom- och molekylfysik och optik

Metallurgi och metalliska material

DOI

10.1021/acs.iecr.8b02699

Mer information

Senast uppdaterat

2018-10-08