@article{MTMT:35777315, title = {Numerical analysis on the thermal load and NO emission of a novel 1 MW pyrolysis gas/natural gas-fired industrial burner}, url = {https://m2.mtmt.hu/api/publication/35777315}, author = {Csemány, Dávid and Füzesi, Dániel and Józsa, Viktor}, doi = {10.1016/j.rineng.2025.104388}, journal-iso = {RESULT ENGIN}, journal = {RESULTS IN ENGINEERING}, volume = {25}, unique-id = {35777315}, issn = {2590-1230}, abstract = {Climate neutrality mandates efficient waste management and the energy use of non-reusable and non-recyclable waste types. Even though the potential in this field is in the range of 1 % of the energy needs, it is a critical step towards a sustainable economy. Pyrolysis is an emerging solution that provides coke, oil, and gas in various shares, depending on the feedstock. The first two products can be processed and utilized by various industries, while local gas use is the most rational solution. For this purpose, a novel burner was designed to run on natural and unfiltered pyrolysis gas to allow startup and dynamic, flexible operation since the currently installed burner failed to meet the emission limitations for long-term use. The complete combustion chamber and its inlets were provided, and the heat release pattern and pollutant emissions at partial and full load were numerically analyzed at a 1:5 turndown ratio, a typical requirement for boilers. It was concluded that there is no need for the tertiary air inlet if a fully premixed burner is used. The secondary air is sufficient to keep the NOx emission and the flame temperature at sufficiently low values, meeting the 250 mg/Nm3 emission standard at 3 % flue gas O2 level and the 1400 °C refractory wall requirements, respectively. The heat release pattern and flow characteristics of pyrolysis gas were similar to that of natural gas at all loads, both properly occupying the combustion chamber, implying that the novel dual-fuel burner concept was adequately designed for this application.}, year = {2025}, eissn = {2590-1230}, orcid-numbers = {Csemány, Dávid/0000-0002-5103-5540; Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748} } @article{MTMT:34193673, title = {Numerical investigation on the effect of hydrogen share in NH3/H2 blends in a turbulent lean-premixed swirl burner}, url = {https://m2.mtmt.hu/api/publication/34193673}, author = {Füzesi, Dániel and Józsa, Viktor and Csemány, Dávid}, doi = {10.1016/j.ijhydene.2023.09.091}, journal-iso = {INT J HYDROGEN ENERG}, journal = {INTERNATIONAL JOURNAL OF HYDROGEN ENERGY}, volume = {49}, unique-id = {34193673}, issn = {0360-3199}, year = {2024}, eissn = {1879-3487}, pages = {816-827}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748; Csemány, Dávid/0000-0002-5103-5540} } @article{MTMT:34433494, title = {The importance of unsteady phenomena of ammonia/methane combustion in an experimental swirl burner: Comparison of steady-state and transient simulation results}, url = {https://m2.mtmt.hu/api/publication/34433494}, author = {Füzesi, Dániel and Józsa, Viktor}, doi = {10.1016/j.combustflame.2023.113207}, journal-iso = {COMBUST FLAME}, journal = {COMBUSTION AND FLAME}, volume = {260}, unique-id = {34433494}, issn = {0010-2180}, year = {2024}, eissn = {1556-2921}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748} } @article{MTMT:33661861, title = {Ammonia-methane combustion in a swirl burner: Experimental analysis and numerical modeling with Flamelet Generated Manifold model}, url = {https://m2.mtmt.hu/api/publication/33661861}, author = {Füzesi, Dániel and Wang, Siqi and Józsa, Viktor and Chong, Cheng Tung}, doi = {10.1016/j.fuel.2023.127403}, journal-iso = {FUEL}, journal = {FUEL}, volume = {341}, unique-id = {33661861}, issn = {0016-2361}, year = {2023}, eissn = {1873-7153}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748} } @article{MTMT:33702233, title = {Schlieren analysis of non-MILD distributed combustion in a mixture temperature-controlled burner}, url = {https://m2.mtmt.hu/api/publication/33702233}, author = {Józsa, Viktor and Malý, Milan and Füzesi, Dániel and Rácz, Erika and Kardos, Réka and Jedelský, Jan}, doi = {10.1016/j.energy.2023.127230}, journal-iso = {ENERGY}, journal = {ENERGY}, volume = {273}, unique-id = {33702233}, issn = {0360-5442}, year = {2023}, eissn = {1873-6785}, orcid-numbers = {Józsa, Viktor/0000-0003-1220-3748; Füzesi, Dániel/0000-0002-0822-9972; Jedelský, Jan/0000-0002-1268-8434} } @CONFERENCE{MTMT:34029567, title = {Numerical simulation of NH3/H2 blends in an experimental swirl burner}, url = {https://m2.mtmt.hu/api/publication/34029567}, author = {Füzesi, Dániel and Trindade, Marcelo and Csemány, Dávid and Nagy, Attila and Guba, Attila and Józsa, Viktor}, booktitle = {Proceedings of the 11th European Combustion Meeting 2023}, unique-id = {34029567}, year = {2023}, pages = {2431-2436}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Csemány, Dávid/0000-0002-5103-5540; Józsa, Viktor/0000-0003-1220-3748} } @article{MTMT:32776588, title = {Numerical modeling of distributed combustion without air dilution in a novel ultra-low emission turbulent swirl burner}, url = {https://m2.mtmt.hu/api/publication/32776588}, author = {Füzesi, Dániel and Malý, Milan and Jedelský, Jan and Józsa, Viktor}, doi = {10.1063/5.0085058}, journal-iso = {PHYS FLUIDS}, journal = {PHYSICS OF FLUIDS}, volume = {34}, unique-id = {32776588}, issn = {1070-6631}, abstract = {Distributed combustion, often associated with the low-oxygen condition, offers ultra-low NOx emission. However, it was recently achieved without combustion air dilution or internal flue gas recirculation, using a distinct approach called mixture temperature-controlled combustion. Here, the fuel-air stream is cooled at the inlet to delay ignition and, hence, foster homogeneous mixture formation. This numerical study aims to understand its operation better and present a robust framework for distributed combustion modeling in a parameter range where such operation was not predicted before by any existing theory. Further, liquid fuel combustion was evaluated, which brings additional complexity. Four operating conditions were presented at which distributed combustion was observed. The reacting flow was modeled by flamelet-generated manifold, based on a detailed n-dodecane mechanism. The Zimont turbulent flame speed model was used with significantly reduced coefficients to achieve distributed combustion. The droplets of airblast atomization were tracked in a Lagrangian frame. The numerical results were validated by Schlieren images and acoustic spectra. It was concluded that the reactant dilution ratio remained below 0.25 through the combustion chamber, revealing that the homogeneous fuel-air mixture is the principal reason for excellent flame stability and ultra-low NOx emission without significant internal recirculation. The potential applications of these results are boilers, furnaces, and gas turbines.}, year = {2022}, eissn = {1089-7666}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Malý, Milan/0000-0002-1193-519X; Jedelský, Jan/0000-0002-1268-8434; Józsa, Viktor/0000-0003-1220-3748} } @CONFERENCE{MTMT:33290644, title = {Numerical investigation of RMS properties of turbulent CH4/NH3 co-combustion}, url = {https://m2.mtmt.hu/api/publication/33290644}, author = {Füzesi, Dániel and Józsa, Viktor and Siqi, Wang and Chong, Cheng Tung}, booktitle = {Proceedings of the 1st Symposium on Ammonia Energy}, unique-id = {33290644}, year = {2022}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748} } @CONFERENCE{MTMT:31983569, title = {Numerical modeling of waste cooking oil biodiesel combustion in a turbulent swirl burner}, url = {https://m2.mtmt.hu/api/publication/31983569}, author = {Füzesi, Dániel and Csemány, Dávid and Chong, Cheng Tung and Józsa, Viktor}, booktitle = {10th European Combustion Meeting Proceedings Volume}, unique-id = {31983569}, year = {2021}, pages = {397-402}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Csemány, Dávid/0000-0002-5103-5540; Józsa, Viktor/0000-0003-1220-3748} } @CONFERENCE{MTMT:30656159, title = {Perdületszám égésre gyakorolt hatásának elemzése}, url = {https://m2.mtmt.hu/api/publication/30656159}, author = {Füzesi, Dániel and Józsa, Viktor}, booktitle = {OGÉT 2019 : XXVII. Nemzetközi Gépészeti Konferencia}, unique-id = {30656159}, year = {2019}, pages = {133-136}, orcid-numbers = {Füzesi, Dániel/0000-0002-0822-9972; Józsa, Viktor/0000-0003-1220-3748} }