On the applicability of scaling criteria to hydrogen micromix burners
This study investigates the scaling up of a pure hydrogen micromix-type burner from laboratory to industrial scale, considering the stability and characteristics of the micromix combustion principle for a baseline case of 20 kW using two different simulation approaches. Low NOx emissions and anchori...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad del País Vasco |
| Repositorio: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/77036 |
| Acceso en línea: | http://hdl.handle.net/10810/77036 |
| Access Level: | acceso embargado |
| Palabra clave: | hydrogen burners micromix combustion principle (MCP) scaling constant velocity constant residence time |
| Sumario: | This study investigates the scaling up of a pure hydrogen micromix-type burner from laboratory to industrial scale, considering the stability and characteristics of the micromix combustion principle for a baseline case of 20 kW using two different simulation approaches. Low NOx emissions and anchoring flame without flashback risk are reported, and the technical aspects of burning pure hydrogen are described. Four different scaling criteria’s impact on flame properties is then addressed using a set of Reynolds average Navier Stokes simulations. A novel scaling criterion for the micromix-type burner to ensure flame anchoring, flame stabilisation and low NOx emissions is proposed. This criterion and the constant residence time criterion perform better than constant velocity and constant momentum criteria in scaling up the MCP’s main characteristics. Finally, a novel methodology for scaling the burner is proposed. The valuable insights from this study can aid in sizing laboratory-scale burners according to the necessary industrial requirements. |
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