Radiative Heat Transfer Modeling and in Situ Diagnostics of Soot in an 80 kWth Propane Flame with Varying Feed-Gas Oxygen Concentration
(2018) In Industrial and Engineering Chemistry Research 57(36). p.12288-12295- Abstract
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... (More)
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.
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- author
- Gunnarsson, Adrian ; Simonsson, Johan LU ; Bäckström, Daniel ; Mannazhi, Manu Naduvil LU ; Bengtsson, Per Erik LU and Andersson, Klas
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Industrial and Engineering Chemistry Research
- volume
- 57
- issue
- 36
- pages
- 8 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85052896837
- ISSN
- 0888-5885
- DOI
- 10.1021/acs.iecr.8b02699
- language
- English
- LU publication?
- yes
- id
- e1e4a910-f986-40ed-a8ca-9d88645d33c5
- date added to LUP
- 2018-10-11 10:50:22
- date last changed
- 2022-04-25 17:59:06
@article{e1e4a910-f986-40ed-a8ca-9d88645d33c5, abstract = {{<p>This work presents experimental measurements of various 80 kW<sub>th</sub> 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.</p>}}, author = {{Gunnarsson, Adrian and Simonsson, Johan and Bäckström, Daniel and Mannazhi, Manu Naduvil and Bengtsson, Per Erik and Andersson, Klas}}, issn = {{0888-5885}}, language = {{eng}}, number = {{36}}, pages = {{12288--12295}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Industrial and Engineering Chemistry Research}}, title = {{Radiative Heat Transfer Modeling and in Situ Diagnostics of Soot in an 80 kW<sub>th</sub> Propane Flame with Varying Feed-Gas Oxygen Concentration}}, url = {{http://dx.doi.org/10.1021/acs.iecr.8b02699}}, doi = {{10.1021/acs.iecr.8b02699}}, volume = {{57}}, year = {{2018}}, }