Details
| Original language | English |
|---|---|
| Title of host publication | Combustion, Fuels, and Emissions |
| Publisher | American Society of Mechanical Engineers(ASME) |
| Number of pages | 10 |
| ISBN (electronic) | 9780791884942 |
| Publication status | Published - 16 Sept 2021 |
| Event | ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021 - Virtual, Online Duration: 7 Jun 2021 → 11 Jun 2021 |
Abstract
As the demand for greenhouse gas neutral transportation and power generation solutions is growing, alternative carbonfree fuel such as hydrogen (H2) and ammonia (NH3) are gaining more attention. Mixtures of both fuels allow the adjustment of combustion properties. With future fuels also the vision of very clean combustion can be taken into the focus, being for instance based on lean premixed and for liquid fuels prevaporized combustion for gas turbines. For the utilization of such concepts, however, flame stability is essential. In this study the upper stability limits, i.e. lean blowout of turbulent hydrogen/ammonia/air flames, is experimentally investigated in a generic non-swirl premixed burner at atmospheric conditions. Special focus is laid on a measurement setup with fully automatized measurement procedure, to reach the stability limits, as these limits tend to depend for instance on the approach speed towards the limit. The ammonia content was varied from 0 vol% to 50 vol% in 10 vol% steps with the rest being hydrogen, for a broad range of fuel-air-equivalence ratios. The lean blowout limit is increasing almost linearly with increasing fuel-air-equivalence ratios, whereas with increasing ammonia content the limit is decreasing. Furthermore, a model for the lean blowout limits were derived, which is able to predict the acquired experimental data with high accuracy.
Keywords
- Ammonia, Hydrogen, Lean blowout, Modeling
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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Combustion, Fuels, and Emissions. American Society of Mechanical Engineers(ASME), 2021. V03AT04A020.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Experimental study on lean blowout limits of turbulent premixed hydrogen/ammonia/air mixtures
AU - Goldmann, Andreas
AU - Dinkelacker, Friedrich
N1 - Funding Information: We would like to acknowledge the funding by the Ministry for Science and Culture of Lower Saxony (MWK) as part of the research program “Mobility in Engineering and Science” (MOBILISE) and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy EXC 2163/1 “Sustainable and Energy Efficient Aviation”, Project ID 390881007.
PY - 2021/9/16
Y1 - 2021/9/16
N2 - As the demand for greenhouse gas neutral transportation and power generation solutions is growing, alternative carbonfree fuel such as hydrogen (H2) and ammonia (NH3) are gaining more attention. Mixtures of both fuels allow the adjustment of combustion properties. With future fuels also the vision of very clean combustion can be taken into the focus, being for instance based on lean premixed and for liquid fuels prevaporized combustion for gas turbines. For the utilization of such concepts, however, flame stability is essential. In this study the upper stability limits, i.e. lean blowout of turbulent hydrogen/ammonia/air flames, is experimentally investigated in a generic non-swirl premixed burner at atmospheric conditions. Special focus is laid on a measurement setup with fully automatized measurement procedure, to reach the stability limits, as these limits tend to depend for instance on the approach speed towards the limit. The ammonia content was varied from 0 vol% to 50 vol% in 10 vol% steps with the rest being hydrogen, for a broad range of fuel-air-equivalence ratios. The lean blowout limit is increasing almost linearly with increasing fuel-air-equivalence ratios, whereas with increasing ammonia content the limit is decreasing. Furthermore, a model for the lean blowout limits were derived, which is able to predict the acquired experimental data with high accuracy.
AB - As the demand for greenhouse gas neutral transportation and power generation solutions is growing, alternative carbonfree fuel such as hydrogen (H2) and ammonia (NH3) are gaining more attention. Mixtures of both fuels allow the adjustment of combustion properties. With future fuels also the vision of very clean combustion can be taken into the focus, being for instance based on lean premixed and for liquid fuels prevaporized combustion for gas turbines. For the utilization of such concepts, however, flame stability is essential. In this study the upper stability limits, i.e. lean blowout of turbulent hydrogen/ammonia/air flames, is experimentally investigated in a generic non-swirl premixed burner at atmospheric conditions. Special focus is laid on a measurement setup with fully automatized measurement procedure, to reach the stability limits, as these limits tend to depend for instance on the approach speed towards the limit. The ammonia content was varied from 0 vol% to 50 vol% in 10 vol% steps with the rest being hydrogen, for a broad range of fuel-air-equivalence ratios. The lean blowout limit is increasing almost linearly with increasing fuel-air-equivalence ratios, whereas with increasing ammonia content the limit is decreasing. Furthermore, a model for the lean blowout limits were derived, which is able to predict the acquired experimental data with high accuracy.
KW - Ammonia
KW - Hydrogen
KW - Lean blowout
KW - Modeling
UR - http://www.scopus.com/inward/record.url?scp=85115659207&partnerID=8YFLogxK
U2 - 10.1115/gt2021-58830
DO - 10.1115/gt2021-58830
M3 - Conference contribution
AN - SCOPUS:85115659207
BT - Combustion, Fuels, and Emissions
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME Turbo Expo 2021
Y2 - 7 June 2021 through 11 June 2021
ER -