Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/138640
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Type: | Journal article |
Title: | Hydrogen turbulent nonpremixed flames blended with spray or prevapourised biofuels |
Author: | Yin, Y. Medwell, P.R. Dally, B.B. |
Citation: | International Journal of Hydrogen Energy, 2023; 48(65):25563-25580 |
Publisher: | Elsevier |
Issue Date: | 2023 |
ISSN: | 0360-3199 1879-3487 |
Statement of Responsibility: | Yilong Yin, Paul R. Medwell, Bassam B. Dally |
Abstract: | The low radiant intensity of hydrogen flames may be enhanced by adding biofuels with a high sooting propensity. This paper reports the effect of biofuel concentration and phase on the combustion characteristics of turbulent nonpremixed hydrogen-based flames. The 0.2 and 1 mol% vapourised/spray biofuel surrogates blended flames exhibit limited soot loading, except for 1 mol% spray toluene and anisole blends where soot starts to form. Spray additives benefit the formation of soot by creating localised fuel-rich conditions. Blending 3.5 and 4 mol% vapourised toluene attains a sooting flame and significantly enhances the luminosity and radiant fraction. The global NOx emissions increase with prevapourised/spray biofuel surrogates due to the enhanced NO formation via thermal and prompt routes. Reducing the hydrogen concentration from 9:1 to 7:3 in H2/N2 (by mole) leads to large increases in luminosity and radiant fraction by 34 times and 135%, respectively, and a reduction in NOx emissions by 68%. |
Keywords: | Hydrogen; Biofuel; Spray flame; Radiant heat flux; NOx emissions |
Description: | Available online 6 April 2023 |
Rights: | © 2023 The Author(s). Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
DOI: | 10.1016/j.ijhydene.2023.03.232 |
Published version: | http://dx.doi.org/10.1016/j.ijhydene.2023.03.232 |
Appears in Collections: | Mechanical Engineering publications |
Files in This Item:
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hdl_138640.pdf | Published version | 3.83 MB | Adobe PDF | View/Open |
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