Measurement of the size distribution, volume fraction and optical properties of soot in an 80kW propane flame
Artikel i vetenskaplig tidskrift, 2017

This work presents measurements of the size distribution, volume fraction, absorption and scattering coefficients of soot in an 80 kW swirling propane-fired flame. Extractive measurements were performed in the flame using an oil-cooled particle extraction probe. The particle size distribution was measured with a Scanning Mobility Particle Sizer (SMPS) and the optical properties were measured using a Photo Acoustic Soot Spectrometer (PASS-3). A detailed radiation model was used to examine the influence of the soot volume fraction on the particle radiation intensity. The properties of the gas were calculated with a statistical narrow-band model and the particle properties were calculated using Rayleigh theory with four different complex indices of refraction for soot particles. The modelled radiation was compared with measured total radiative intensity, the latter which was measured with a narrow angle radiometer. The results show that the measured soot volume fraction yields particle radiation that corresponds well with the determined difference between gas and total radiation. This indicates that the presented methodology is capable of quantifying both the particle and gaseous radiation in a flame of technical size.

Radiative heat transfer

SMPS

PASS-3

Soot

Författare

Daniel Bäckström

Chalmers, Energi och miljö, Energiteknik

Adrian Gunnarsson

Chalmers, Energi och miljö, Energiteknik

Dan Gall

Göteborgs universitet

Xiangyu Pei

Göteborgs universitet

Robert Johansson

Chalmers, Energi och miljö, Energiteknik

Klas Andersson

Chalmers, Energi och miljö, Energiteknik

Ravi Kant Pathak

Göteborgs universitet

Jan B.C. Pettersson

Göteborgs universitet

Combustion and Flame

0010-2180 (ISSN)

Vol. 186 325-334

Ämneskategorier

Energiteknik

DOI

10.1016/j.combustflame.2017.08.023