Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/135791
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Type: | Journal article |
Title: | Toluene addition to turbulent H₂/natural gas flames in bluff-body burners |
Other Titles: | Toluene addition to turbulent H2/natural gas flames in bluff-body burners |
Author: | Gee, A.J. Yin, Y. Foo, K.K. Chinnici, A. Smith, N. Medwell, P.R. |
Citation: | International Journal of Hydrogen Energy, 2022; 47(65):27733-27746 |
Publisher: | Elsevier BV |
Issue Date: | 2022 |
ISSN: | 0360-3199 1879-3487 |
Statement of Responsibility: | Adam J. Gee, Yilong Yin, Kae Ken Foo, Alfonso Chinnici, Neil Smith, Paul R. Medwell |
Abstract: | A key challenge in the transition towards using hydrogen as an alternative carbon-free fuel is the reduced thermal radiation due to the absence of soot. A novel solution to this may be doping with highly sooting bio-oils. This study investigates the efficacy of toluene as a prevapourised dopant in turbulent pure hydrogen and blended hydrogen/natural gas flames as a means of improving soot loading and radiant heat transfer. All flames are stabilised on bluff-body burners to emulate the recirculation component of many industrial combustors. Total heat flux and illuminance increase non-linearly with toluene concentration for fuel blends and bluff-body diameters. By reducing the bluff-body diameter from 64 mm to 50 mm, a 20/80 (vol%) H2/natural gas mixture produces a more radiative flame than a 10/90H2/natural gas mixture in the smaller bluff-body. Opposed-flow flame simulations of soot precursors indicate that as strain rate increases, although overall soot precursor concentration decreases, a 20 vol% hydrogen mixture will produce more soot than a 10 vol% mixture. This suggests the addition of hydrogen up to 20 vol% may be beneficial for soot production in high strain environments. |
Keywords: | Hydrogen; Toluene; Radiation; Bluff-body; Doping |
Rights: | © 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.ijhydene.2022.06.154 |
Grant ID: | http://purl.org/au-research/grants/arc/DP190101712 |
Published version: | http://dx.doi.org/10.1016/j.ijhydene.2022.06.154 |
Appears in Collections: | Mechanical Engineering publications |
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File | Description | Size | Format | |
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hdl_135791_embargo_AM.pdf Restricted Access | Embargo ends 10 July 2024 | 1.33 MB | Adobe PDF | View/Open |
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