Odeh, A. and Paul, M. C. (2024) Effects of hydrogen enrichment on the heat generation and emission of natural gas turbulent premixed flame. International Journal of Hydrogen Energy, 49(Part B), pp. 1176-1191. (doi: 10.1016/j.ijhydene.2023.10.140)
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Abstract
The demand for clean energy and the decarbonisation targets set globally require researching and developing new solutions. An efficient computational approach was implemented to examine the effect of hydrogen enrichment on flame characteristics, flame temperature, heat generation, NOx and carbon emissions under varying stoichiometry of combustion. Results showed that hydrogen enrichment significantly reduces CO2 emissions but also has undesirable effects which include reducing the heat generation capability of flame and increasing NOx emissions. The level of impact on each of these characteristics was found to be different. Under a boiler-like condition and stoichiometry (Ф = 0.8), a 10 % decrease in CO2 emissions was observed when enriching the fuel with 20 % hydrogen. Concurrently, the heat flux generated from the flame is reduced by 6 % and NOx emission is increased by 2 %. The effect of hydrogen enrichment on these aspects becomes more prominent at a higher enrichment level. The study also finds that making combustion leaner is an effective strategy to combat the effect of hydrogen enrichment with respect to CO2 and NOx emission generation. Despite the leaner combustion producing less emissions for any given hydrogen enrichment level, it significantly decreases the heat transfer capacity of the flame. Alongside these flame characteristics, the significant role of hydrogen enrichment on increasing water vapour (H2O) production was examined.
| Item Type: | Articles |
|---|---|
| Additional Information: | MCP acknowledges support from Engineering and Physical Sciences Research Council (EPSRC) [EP/T022701/1, EP/N020472/1]; Network-H2 Flex Transport grant – EPSRC/Durham (NH2-006); Energy Technology Partnership (ETP) (PR008-HE). |
| Keywords: | Hydrogen enrichment, natural gas, turbulent premixed flame, domestic boiler, combustion modelling. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Paul, Professor Manosh and Odeh, Mr Abdulhadi |
| Authors: | Odeh, A., and Paul, M. C. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | International Journal of Hydrogen Energy |
| Publisher: | Elsevier |
| ISSN: | 0360-3199 |
| ISSN (Online): | 1879-3487 |
| Published Online: | 31 October 2023 |
| Copyright Holders: | Copyright © 2023 The Author(s) |
| First Published: | First published in International Journal of Hydrogen Energy 2023 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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