Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model
The standard Eddy Dissipation Concept model with a modified San Diego mechanism was applied to account for nitrogen chemistry to predict ammonia flame quenching during lean non-premixed combustion in a swirl burner. This study examined the combustion of ammonia-air and ammonia-hydrogen-air flames wi...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24017015 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841555672849711104 |
|---|---|
| author | Adam Klimanek Wojciech Adamczyk Sławomir Sładek Yong Fan Mirko R. Bothien Andrea Gruber Andrzej Szlęk |
| author_facet | Adam Klimanek Wojciech Adamczyk Sławomir Sładek Yong Fan Mirko R. Bothien Andrea Gruber Andrzej Szlęk |
| author_sort | Adam Klimanek |
| collection | DOAJ |
| description | The standard Eddy Dissipation Concept model with a modified San Diego mechanism was applied to account for nitrogen chemistry to predict ammonia flame quenching during lean non-premixed combustion in a swirl burner. This study examined the combustion of ammonia-air and ammonia-hydrogen-air flames within a two-stage swirl burner that can be used in a micro gas turbine rated at 50 kW. Various fuel energy inputs at different equivalence ratios were examined regarding flame quenching. The objective of this work was to present a series of experimental results to validate computational fluid dynamics model based on experimental data and determination of best operating conditions from the point of view of emission of pollutants. The results show that the applied San Diego mechanism, which predicts well the flame speeds in lean and stoichiometric conditions, along with the eddy decipation model can accurately predict the flame quenching at various fuel loads and is suitable for CFD simulations due to relatively small number of reactions. The results indicate that the inclusion of the radiation model and heat losses to the surroundings is necessary even for a small size combustor. Excluding the heat loss and radiation was the reason for predicting the quenching limit in much leaner conditions, especially for small fuel loads. This phenomenon was ascribed to the significantly greater impact of heat transfer (reduction in temperature) on the combustion process at lower flow rates. |
| format | Article |
| id | doaj-art-4fc770d0b3244e5ab3aef648578abeac |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-4fc770d0b3244e5ab3aef648578abeac2025-01-08T04:52:50ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-0165105670Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC modelAdam Klimanek0Wojciech Adamczyk1Sławomir Sładek2Yong Fan3Mirko R. Bothien4Andrea Gruber5Andrzej Szlęk6Department of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, PolandDepartment of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, Poland; Corresponding author.Department of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, PolandNational Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8560, JapanZurich University of Applied Sciences (ZHAW), Institute of Energy Systems and Fluid Engineering, Technikumstrasse 9, Winterthur 8401, SwitzerlandSINTEF Energy Research, Division of Energy Research, Sem Sælands 11, 7034 Trondheim, NorwayDepartment of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44-100 Gliwice, PolandThe standard Eddy Dissipation Concept model with a modified San Diego mechanism was applied to account for nitrogen chemistry to predict ammonia flame quenching during lean non-premixed combustion in a swirl burner. This study examined the combustion of ammonia-air and ammonia-hydrogen-air flames within a two-stage swirl burner that can be used in a micro gas turbine rated at 50 kW. Various fuel energy inputs at different equivalence ratios were examined regarding flame quenching. The objective of this work was to present a series of experimental results to validate computational fluid dynamics model based on experimental data and determination of best operating conditions from the point of view of emission of pollutants. The results show that the applied San Diego mechanism, which predicts well the flame speeds in lean and stoichiometric conditions, along with the eddy decipation model can accurately predict the flame quenching at various fuel loads and is suitable for CFD simulations due to relatively small number of reactions. The results indicate that the inclusion of the radiation model and heat losses to the surroundings is necessary even for a small size combustor. Excluding the heat loss and radiation was the reason for predicting the quenching limit in much leaner conditions, especially for small fuel loads. This phenomenon was ascribed to the significantly greater impact of heat transfer (reduction in temperature) on the combustion process at lower flow rates.http://www.sciencedirect.com/science/article/pii/S2214157X24017015Numerical modelingAmmonia combustionGas turbineCFDFlame quenching |
| spellingShingle | Adam Klimanek Wojciech Adamczyk Sławomir Sładek Yong Fan Mirko R. Bothien Andrea Gruber Andrzej Szlęk Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model Case Studies in Thermal Engineering Numerical modeling Ammonia combustion Gas turbine CFD Flame quenching |
| title | Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model |
| title_full | Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model |
| title_fullStr | Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model |
| title_full_unstemmed | Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model |
| title_short | Prediction of ammonia ignition/quenching and emissions of NOx, NH3 and H2 in a non-premixed swirl combustor using the EDC model |
| title_sort | prediction of ammonia ignition quenching and emissions of nox nh3 and h2 in a non premixed swirl combustor using the edc model |
| topic | Numerical modeling Ammonia combustion Gas turbine CFD Flame quenching |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24017015 |
| work_keys_str_mv | AT adamklimanek predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT wojciechadamczyk predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT sławomirsładek predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT yongfan predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT mirkorbothien predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT andreagruber predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel AT andrzejszlek predictionofammoniaignitionquenchingandemissionsofnoxnh3andh2inanonpremixedswirlcombustorusingtheedcmodel |