Publications

A1

Experimental investigation of pyrolysis and char burnout kinetics in a Well-Stirred-Reactor under flames and burn-out conditions

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A2

Experimental Investigation of Pyrolysis and Char Burnout Kinetics in a Plug Flow Reactor with Focus on the Ignition and Early Char Burnout Phase

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A3

Experimental determination of reaction kinetics for the release of chlorine and sulfur species and for the conversion of these species in the gas phase

  • Frigge, L., Elserafi, G., Ströhle, J. and Epple, B.Sulfur and Chlorine Gas Species Formation during Coal Pyrolysis in Nitrogen and Carbon Dioxide Atmosphere, Energy & Fuels, 30 (9): 7713-7720, 2016.

  • von Bohnstein, M., Langen, J., Frigge, L., Stroh, A., Ströhle, J. and Epple, B.Comparison of CFD Simulations with Measurements of Gaseous Sulfur Species Concentrations in a Pulverized Coal Fired 1 MWth Furnace, Energy & Fuels, 30 (11): 9836-9849, 2016.

  • Frigge, L., Ströhle, J. and Epple, B.Release of sulfur and chlorine gas species during coal combustion and pyrolysis in an entrained flow reactor, Fuel, 201: 105-110, 2017.

  • Frigge, L., Ströhle, J. and Epple, B.Sulfur and Chlorine Gas Species Formation during Temperature-Programmed Coal Air- and Oxy-fuel Combustion, 13th International Conference on Energy for a Clean Environment, 2017.

  • Frigge, L., Ströhle, J. and Epple, B.Modification of a model for sulfur release during coal pyrolysis to account for oxy-fuel conditions, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Debiagi, P. E. A., Coskun, Y., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C.Validation of a comprehensive kinetic mechanism for sulfur release during pyrolysis of solid fuels, 9th International Symposium on Coal Combustion, 2019.

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A5

Kinetic investigations on catalytic properties of mineral matter in oxy-fuel combustion

  • Düdder, H., Wütscher, A., Stoll, R. and Muhler, M.Synthesis and characterization of lignite-like fuels obtained by hydrothermal carbonization of cellulose, Fuel (171): 54-58, 2016.

  • Düdder, H., Wütscher, A. and Muhler, M.Catalytic influence of minerals on the combustion behavior of a cellulose-derived solid fuel, [48th Jahrestreffen Deutscher Katalytiker, 11/03/2015 – 13/03/2015, Weimar, Germany], 2015.

  • Wütscher, A., Düdder, H. and Muhler, M.Synthetic Lignite-like Fuel for Oxy-fuel Combustion, [48th Jahrestreffen Deutscher Katalytiker, 11/03/2015 – 13/03/2015, Weimar, Germany], 2015.

  • Düdder, H., Wütscher, A. and Muhler, M.Experiments and kinetic modelling of char combustion, [European Symposium on Chemical Reaction Engineering, 27/10/2015 – 30/10/2015, Fürstenfeldbruck, Germany], 2015.

  • Düdder, H., Wütscher, A., Vorobiev, N., Schiemann, M., Scherer, V. and Muhler, M.Oxidation characteristics of a cellulose-derived hydrochar in thermogravimetric and laminar flow burner experiments, Fuel Processing Technology, 148: 85-90, 2016. doi 

  • Heuer, S., Senneca, O., Wütscher, A., Düdder, H., Schiemann, M., Muhler, M. and Scherer, V.Effects of oxy-fuel conditions on the products of pyrolysis in a drop tube reactor, Fuel Processing Technology, 150: 41-49, 2016. doi 

  • Düdder, H., Lotz, K., Wütscher, A. and Muhler, M.The influence of iron oxide on the oxidation kinetics of synthetic char derived from thermogravimetric analysis and fixed-bed experiments under isothermal and temperature-programmed conditions, Fuel, 2016.

  • Wütscher, A., Wedler, C., Seibel, C., Hiltrop, D., Fieback, T.M., Muhler, M. and Span, R.On the alternating physicochemical characteristics of Colombian coal during pyrolysis, Journal of Analytical and Applied Pyrolysis, 123: 12-19, 2017. doi 

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Richter, M., Span, R., Schiemann, M., Muhler, M. and Scherer, V.Assessment of combustion rates of coal chars for oxy-combustion applications, 2nd International Workshop on Oxy-Fuel Combustion, Bochum, 2018.

  • Wütscher, A, Apicella, B, Russo, C, Stanzione, F, Ciajolo, A, Heuer, S, Scherer, V, Muhler, M and Senneca, OCharacterization of tar produced from walnut shells pyrolysis, 40th Meeting of the Italian Section of the Combustion Institute, Rome, 2017.

  • Graeser, P., Wütscher, A., Cerciello, F., Muhler, M. and Schiemann, M.Emissivity Comparison between Chars and Demineralized Coal Chars under Oxycombustion Conditions, Chemical Engineering & Technology, 2018. doi 

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V.Assessment of combustion rates of coal chars for oxy-combustion applications, Fuel, 238: 173-185, 2019.

  • Lotz, K., Wütscher, A., Eckhard, T. and Muhler, M.The impact of mineral matter on the evolved pyrolysis gases, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Düdder, H., Wütscher, A. and Muhler, M.Kinetic analysis of temperature-programmed and isothermal hydrochar oxidation experiments, 48. Jahrestreffen Deutscher Katalytiker, 2015.

  • Wütscher, A., Eckhard, T., Hiltrop, D., Lotz, K., Schuhmann, W., Andronescu, C. and Muhler, M.Nitrogen-Doped Metal-Free Carbon Materials Derived from Cellulose as Electrocatalysts for the Oxygen Reduction Reaction, ChemElectroChem, 1: 16064, 2018.

  • Wütscher, A., Düdder, H. and Muhler, M.Detailed Investigations on Particle Related Effects in Oxy-Fuel Coal Combustion: Pyrolysis, Char Burnout and Release of Sulphur and Chlorine Components, 1st International Workshop on Oxy-Fuel Combustion, 2016.

  • Senneca, O., Apicella, B., Russo, C., Cerciello, F., Salatino, P., Heuer, S., Wütscher, A., Schiemann, M., Muhler, M. and Scherer, V.Pyrolysis and Thermal Annealing of Coal and Biomass in CO2-Rich Atmospheres, Energy & Fuels, 32 (10): 10701-10708, 2018.

  • Lotz, K., Berger, C. M. and Muhler, M.Catalytic effect of iron phases on the oxidation of cellulose-derived synthetic char, Innovative Solutions for Energy Transitions: Proceedings of the 10th International Conference on Applied Energy (ICAE2018), 694-699, Elsevier, Amsterdam, 2019.

  • Lotz, K., Wütscher, A., Düdder, H., Berger, C. M., Russo, C., Mukherjee, K., Schwaab, G., Havenith, M. and Muhler, M.Tuning the Properties of Iron-Doped Porous Graphitic Carbon Synthesized by Hydrothermal Carbonization of Cellulose and Subsequent Pyrolysis, ACS Omega, 4 (2): 4448-4460, 2019.

  • Eckhard, T., Lotz, K., Pflieger, C., Vorobiev, N., Valentiner, S., Scherer, V. and Muhler, M.Hydrothermal carbonisierte mikrokristalline Cellulose als aschefreier Modellbrennstoff für Flachflammenbrenner, 29. Deutscher Flammentag, 2019.

  • Eckhard, T.Pyrolysis-GC/MS-GC/TCD: Analysis of broad product distributions evolving during coal pyrolysis, Pyrolysis GC-MS User Meeting, 2019.

  • Kreitzberg, T., Gövert, B., Pielsticker, S. and Kneer, R.CO2 and H2O Gasification under Chemically and Diffusion Controlled Conditions, Kapstadt, Südafrika, 2016.

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A6

Determination of excess-sorptive kinetics, equilibrium loadings and heats of adsorption of gaseous oxy-fuel-components on the used solid fuels

  • Fieback, T. and Span, R.High Temperature Sorption Measurements for Determining Surface Effects of Solid Fuels, Energy Procedia, 61: 1501–1504, 2014.

  • Fieback, T. and Span, R.High Temperature Sorption Measurements for Determining Surface Effects of Solid Fuels, [The 6th International Conference on Applied Energy, 30/05/2014 – 02/06/2014, Taipei City, Taiwan], 2014.

  • Seibel, C. and Fieback, T. M.New sample carrier systems for thermogravimetric analysis under forced flow conditions and their influence on microkinetic results, Review of Scientific Instruments, 86 (9): 095104, 2015.

  • Seibel, C., Wedler, C., Vorobiev, N., Schiemann, M., Scherer, V., Span, R. and Fieback, T. M.Sorption measurements for determining surface effects and structure of solid fuels, Fuel Processing Technology, 153: 81-86, 2016.

  • Wedler, C., Fieback, T. M. and Span, R.Sorptionskinetische Untersuchungen von Oxyfuel-Gaskomponenten an Festbrennstoffen, ProcessNET/VDI. Thermodynamik-Kolloquium, Kaiserslautern, 2016.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Richter, M., Span, R., Schiemann, M., Muhler, M. and Scherer, V.Assessment of combustion rates of coal chars for oxy-combustion applications, 2nd International Workshop on Oxy-Fuel Combustion, Bochum, 2018.

  • Schiemann, M., Wedler, C., Vorobiev, N., Richter, M., Span, R. and Scherer, V.Effektive Diffusionskoeffizienten in Kokspartikeln aus Oxyfuel-Feuerungen, 28th Deutscher Flammentag, Darmstadt, 2017.

  • Wütscher, A., Wedler, C., Seibel, C., Hiltrop, D., Fieback, T.M., Muhler, M. and Span, R.On the alternating physicochemical characteristics of Colombian coal during pyrolysis, Journal of Analytical and Applied Pyrolysis, 123: 12-19, 2017. doi 

  • Wedler, C., Richter, M. and Span, R.Integration of sorption kinetics in carbon conversion modeling for the description of oxyfuel combustion processes, Energy Procedia, 142: 1361-1366, 2017. doi 

  • Wedler, C., Arami-Niya, A., Xiao, G., Span, R., May, E. F. and Richter, M.Gas Diffusion and Sorption in Carbon Conversion.

  • Senneca, O., Heuer, S., Bareschino, P., Urciuolo, M., Pepe, F., Schiemann, M., Chirone, R. and Scherer, V.Fragmentation of pulverized coal in a laminar drop tube reactor: Experiments and model, Proceedings of the Combustion Institute, 2018.

  • Senneca, O., Vorobiev, N., Wütscher, A., Cerciello, F., Heuer, S., Wedler, C., Span, R., Schiemann, M., Muhler, M. and Scherer, V.Assessment of combustion rates of coal chars for oxy-combustion applications, Fuel, 238: 173-185, 2019.

  • Senneca, O., Apicella, B., Russo, C., Cerciello, F., Salatino, P., Heuer, S., Wütscher, A., Schiemann, M., Muhler, M. and Scherer, V.Pyrolysis and Thermal Annealing of Coal and Biomass in CO2-Rich Atmospheres, Energy & Fuels, 32 (10): 10701-10708, 2018.

  • Fieback, T. M.Hochtemperatur-Sorptionsmessungen für die Bestimmung von Oberflächeneffekten an Festbrennstoffen, Thermodynamik-Kolloquium 2014, 2014.

  • Seibel, C. and Fieback, T. M.Hochtemperatur-Adsorptionsprozesse zur Kohleverbrennung in einer Oxyfuel-Atmosphäre, Thermodynamik-Kolloquium 2015, 2015.

  • Wedler, C., Arami-Niya, A., Xiao, G., Span, R., May, E. F. and Richter, M.Sorption Kinetics of CO2, CH4 and O2 on Cellulose-based Hydrochars for Carbon Conversion Modelling, Thermodynamik-Kolloquium 2018, 2018.

  • Wedler, C., Richter, M. and Span, R.Sorptive determination of effective diffusion coefficients for integration in carbon conversion models, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Wedler, C., Seibel, C., Richter, M., Fieback, T. M. and Span, R.Oxyfuel Combustion -- Experimental Investigation of Sorption Effects on Coal Char, Energy Procedia, 105: 1847-1851, 2017.

  • Wedler, C., Seibel, C., Span, R. and Fieback, T. M.Prediction of real surface concentrations of oxyfuel gases on different coal chars using IAST, 1st International Workshop on Oxy-Fuel Combustion, 2016.

  • Wedler, C., Span, R. and Richter, M.Adsorption und Diffusion bei der Oxyfuel-Verbrennung: Graphit als Türöffner zur Verknüpfung von Experiment und MD-Simulation, Jahrestreffen der ProcessNet-Fachgruppen Adsorption und Hochdruckverfahrenstechnik, 2019.

  • Heuer, S., Wedler, C., Ontyd, C., Schiemann, M., Span, R., Richter, M. and Scherer, V.Evolution of coal char porosity from CO2-pyrolysis experiments, Fuel, 253: 1457-1464, 2019.

  • Wedler, C., Angenent, V., Yönder, O., Hättig, C., Schmid, R., Span, R. and Richter, M.Adsorption and diffusion in oxyfuel combustion -- Linking experiment and MD simulation through graphite structures as a first example, Diffusion Fundamentals 8, 2019.

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A7

Atomistic multiscale simulation of char combustion

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A8

Kinetic Modelling of Solid Fuels Conversion

  • Debiagi, P., Ranzi, E., Faravelli, T. and Hasse, C.Coal Combustion: Integrating Nitrogen and Sulfur Fraction in a Single Kinetic Mechanism, 1st International Conference on Smart Energy Carriers, 2019.

  • Debiagi, P. E. A., Ontyd, C., Heuer, S., Pielsticker, S., Schiemann, M., Faravelli, T., Kneer, R., Scherer, V. and Hasse, C.Solid Fuel Kinetics for Oxy-Fuel conditions, 29. Deutscher Flammentag, 2019.

  • Debiagi, P. E. A., Heuer, S., Ontyd, C., Schiemann, M., Faravelli, T., Hasse, C. and Scherer, V.Differences in Formation and Oxidation Of Colombian Coal Chars in Air and Oxy-Fuel Atmospheres, Chemical Engineering Transactions, 74: 151-156, 2019.

  • Debiagi, P. E. A., Coskun, Y., Ströhle, J., Epple, B., Faravelli, T. and Hasse, C.Validation of a comprehensive kinetic mechanism for sulfur release during pyrolysis of solid fuels, 9th International Symposium on Coal Combustion, 2019.

  • Wen, Xu, Stein, O. T., Tufano, G. L., Kronenburg, A., Scholtissek, A. and Hasse, C.Multi-dimensional and transient effects on flamelet modeling for turbulent pulverized coal combustion, Fuel, 255: 115772, 2019.

  • Wen, Xu, Debiagi, P. E. A., Stein, O. T., Kronenburg, A., Kempf, A. M. and Hasse, C.Flamelet tabulation methods for solid fuel combustion with fuel-bound nitrogen, Combustion and Flame, 209: 155-166, 2019.

  • Debiagi, P. E. A., Nicolai, H., Han, W., Janicka, J. and Hasse, C.Towards predictive CFD simulations of coal combustion -- using Machine Learning for efficient representation of solid fuel kinetics, 9th International Symposium on Coal Combustion, 2019.

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B1

Experimental investigation of coal combustion under oxy-fuel conditions in a counterflow reactor

  • Cai, L., Baroncelli, M., Kruse, S., Felsmann, D., Thies, C. and Pitsch, H.Extinction Characteristics of Methane Counterflow Flames under Oxy-Fuel and Air Conditions, Proceedings of the China National Symposium on Combustion 2016, 2016.

  • Baroncelli, M., Felsmann, D., Kruse, S., Beeckmann, J. and Pitsch, H.Extinction strain rates for coal light volatiles under oxy-fuel conditions, Proceedings of the China National Symposium on Combustion, 2016.

  • Xu, K., Zhang, H., Wu, Y., Baroncelli, M. and Pitsch, H.Transient model for soot formation during the combustion of single coal particles, Proceedings of the Combustion Institute, 2016.

  • Baroncelli, M., Kruse, S. and Pitsch, H.Experimental and numerical investigation of extinction strain rates of coal devolatilization products under oxy-fuel conditions, Budapest, Ungarn, 2015.

  • Felsmann, D., Baroncelli, M., Beeckmann, J. and Pitsch, H.Molecular-beam mass spectrometry study of oxy-combustion in a novel coal-plate experiment, Proceedings of the Combustion Institute, 2018.

  • Emmert, J., Baroncelli, M., van der Kley, S., Pitsch, H. and Wagner, S.Axisymmetric Linear Hyperspectral Absorption Spectroscopy and Residuum-Based Parameter Selection on a Counter Flow Burner, Energies, 12 (14): 2786, 2019.

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B2

Development of model terms for fluid-particle interaction in turbulent flows via highly resolved numerical simulations

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B3

Direct Numerical Simulation and Modeling of the oxy-fuel Combustion

  • Farazi, S., Sayadi, T. and Pitsch, H.Numerical analysis of the drag force acting on the reactive single char particle under oxy-fuel condition, 2016.

  • Farazi, S., Sadr, M., Kang, S., Schiemann, M., Vorobiev, N., Scherer, V. and Pitsch, H.Resolved simulations of single char particle combustion in a laminar flow field, Fuel, 201: 15-28, 2017.

  • Farazi, S., Schiemann, M., Vorobiev, N., Scherer, V., Kang, S. and Pitsch, H.A new variable transport coefficient single-film model for char combustion, April 18th-21st, Dubrovnik, Croatia. 2017.

  • Sayadi, T., Farazi, S., Kang, S. and Pitsch, H.Transient multiple particle simulations of char particle combustion, Fuel, 199: 289-298, 2017.

  • Farazi, S. and Pitsch, H.Fully resolved simulation of single and group particle combustion in an oxy-fuel atmosphere, February 10th-11th 2016, Montabaur, Germany.

  • Farazi, S., Attili, A., Heuer, S., Schiemann, M., Scherer, V. and Pitsch, H.Modeling and Simulation of Coal Ignition and Combustion under Oxy-Fuel Condition, 2nd International Workshop on Oxy-Fuel Combustion, Bochum, 2018.

  • Farazi, S., Attili, A., Kang, S. and Pitsch, H.Numerical study of coal particle ignition in air and oxy-atmosphere, Proceedings of the Combustion Institute, 2018.

  • Farazi, S., Sayadi, T. and Pitsch, H.Numerical analysis of the drag force acting on the reactive single char particle under oxy-fuel conditions, Proceedings of the China National Symposium on Combustion 2016, 2016.

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B4

Detailed experimental investigation and characterization of oxy-coal-burners via laser-optical methods

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B5

Robust diagnostic methods based on absorption spectroscopy for coal combustion processes: measurement of gas species, temperatures and particle load

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B6

Modeling of Particle-Turbulence-Chemistry Interaction in oxy-fuel-Processes

  • Knappstein, R., Kuenne, G., Ketelheun, A., Köser, J., Becker, L., Heuer, S., Schiemann, M., Scherer, V., Dreizler, A., Sadiki, A. and Janicka, J.Devolatilization and volatiles reaction of individual coal particles in the context of FGM tabulated chemistry, Combustion and Flame, 169: 72-84, 2016. doi 

  • Knappstein, R., Ketelheun, A., Künne, G., Köser, J., Dreizler, A., Sadiki, A. and Janicka, J.A consistent approach for coupling the devolatilization of coal particles with tabulated chemistry, 15th International Conference on Numerical Combustion, Avignon, Frankreich, 2015.

  • Ketelheun, A., Mehdizadeh, A., Knappstein, R., Sadiki, A. and Janicka, J.Investigation of Unsteady Simulation Methods in an Oxyfuel Configuration, 27. Deutscher Flammentag, 581-590, Clausthal-Zellerfeld, 2015.

  • Knappstein, R., Künne, G., Meier, T., Sadiki, A. and Janicka, J.Evaluation of coal particle volatiles reaction by using detailed kinetics and FGM tabulated chemistry, Fuel, 201: 39-52, 2017.

  • Köser, J., Knappstein, R., Goßmann, A.-K., Becker, L. G., Böhm, B., Janicka, J. and Dreizler, A.An experimental and numerical study of volatile combustion of single coal particles in an oxygen enriched atmosphere, 32nd International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, 2015.

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B7

Investigation of ignition and combustion processes of solid fuel particles under oxyfuel conditions

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B8

Sensitivity analysis and uncertainty quantification of pulverized solid fuel combustion

  • Sayadi, T., Farazi, S., Kang, S. and Pitsch, H.Transient multiple particle simulations of char particle combustion, Fuel, 199: 289-298, 2017.

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C1

Experimental investigation of a pulverized coal burning process to validate numerical models, Short title: Validation experiments

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Gronarz, T., Gövert, B., Höfler, M., Ohliger, A., Habermehl, M., Hatzfeld, O. and Kneer, R.Experimental Investigation and Comparison of Pulverized Coal Combustion in CO2/O2- and N2/O2-Atmospheres, [SPEIC: Towards Sustainable Combustion, 19/11/2014 – 21/11/2014, Lisbon, Portugal], 2014.

  • Zabrodiec, D., Maßmeyer, A., Hees, J., Gronarz, T., Gövert, B., Höfler, M., Ohliger, A., Habermehl, M., Hatzfeld, O. and Kneer, R.Experimental Characterization of the effect of Dry Recirculation on a Swirled Self-Stabilized Oxycoal Flame, [31st Pittsburgh Coal Conference, 06/10/2014 – 09/10/2014, Pittsburgh, PA, USA], 2014.

  • Habermehl, M., Hees, J., Zabrodiec, D. and Kneer, R.Comparison of Flame Stability under Air and Oxy-Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl Flame, [40th International Technical Conference on Clean Coal & Fuel, 31/05/2015 – 04/06/2015, Clearwater, FL, USA], 2015.

  • Hees, J., Zabrodiec, D., Massmeyer, A., Habermehl, M. and Kneer, R.Experimental Investigation and Comparison of Pulverized Coal Combustion in CO2/O2- and N2/O2-Atmospheres, Flow, Turbulence and Combustion, 96 (2): 417-431, 2015.

  • Hees, J., Zabrodiec, D., Massmeyer, A., Pielsticker, S., Gövert, B., Habermehl, M., Hatzfeld, O. and Kneer, R.Detailed analyzes of pulverized coal swirl flames in oxy-fuel atmospheres, Combustion and Flame, 172: 289-301, 2016.

  • Becker, L. G., Kosaka, H., Böhm, B., Doost, S., Knappstein, R., Habermehl, M., Kneer, R., Janicka, J. and Dreizler, A.Experimental investigation of flame stabilization inside the quarl of an oxyfuel swirl burner, Fuel, 2016.

  • Zabrodiec, D., Hees, J., Maßmeyer, A., Lehn, F. v., Hatzfeld, O., Habermehl, M. and Kneer, R.Experimental Investigation of Pulverized Coal Flames in CO2/O2- and N2/O2-Atmospheres: Comparison of solid particle radiative characteristics, Fuel, 2016.

  • Habermehl, M., Hees, J., Zabrodiec, D. and Kneer, R.Charakterisierung ähnlicher, aerodynamisch bestimmter Flammenzustände eines Kohlenstaub-Drallbrenners im Luft- und Oxyfuel-Betrieb, Clausthal-Zellerfeld, 2015.

  • Zabrodiec, D., Becker, L., Hees, J., Maßmeyer, A., Habermehl, M., Hatzfeld, O., Dreizler, A. and Kneer, R.Detailed Analysis of the Velocity Fields from 60 kW Swirl-Stabilized Coal Flames in CO2/O2- and N2/O2-Atmospheres by Means of Laser Doppler Velocimetry and Particle Image Velocimetry, Combustion Science and Technology, 0 (0): 1-25, 0. doi 

  • Bürkle, S., Ebert, V., Rauen, D., Dreizler, A., Möller, G. H., Hees, J., Zabrodiec, D., Maßmeyer, A. and Wagner, S.Laserbasierte Messung von Temperatur und Spezieskonzentrationen bei der Verbrennung von torrefizierter Biomasse in einer 100 kWth-Staubfeuerungsversuchsanlage, 28. Deutscher Flammentag, 2017.

  • Hees, J., Bürkle, S., Becker, L. G., Zabrodiec, D., Wagner, S., Dreizler, A. and Kneer, R.A complementary approach for the experimental investigation of solid oxy-fuel combustion using optical diagnostics, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Habermehl, M. and Kneer, R.Experimental Investigation and Comparison of Pulverized Coal Combustion in CO2/O2$-$ and N2/O2$-$Atmospheres, Flow, Turbulence and Combustion, 96 (2): 417-431, 2016.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Hatzfeld, O., Habermehl, M. and Kneer, R.Kohlenstaubverbrennung in Oxyfuel-Atmosphäre - Einfluss der Oxidatorzusammensetzung auf den Verbrennungsprozess, 28. Deutscher Flammentag, 2017.

  • Hees, J., Zabrodiec, D., Maßmeyer, A., Hatzfeld, O. and Kneer, R.Experimental investigation into the influence of the oxygen concentration on a pulverized coal swirl flame in oxy-fuel atmosphere, Fuel, 240: 64-74, 2019.

  • Möller, G. H., Maßmeyer, A., Hees, J., Zabrodiec, D., Habermehl, M. and Kneer, R.Chemiluminescence measurements in a pulverized fuel furnace of pure torreed biomasses in comparison to solid fossil fuels, 42nd International Technical Conference on Clean Energy, 2017.

  • Zabrodiec, D., Hees, J., Maßmeyer, A., Hatzfeld, O. and Kneer, R.Experimental Investigation and Comparison of radiative characteristics of Pulverized Coal Flames in CO2/O2- and N2/O2-Atmospheres, 1st International Workshop on Oxy-Fuel Combustion, 2016.

  • Zabrodiec, D., Hees, J., Maßmeyer, A. and Kneer, R.Progress and Challenges in Flow Field Studies of 40 - 60 kW Pulverized Coal Flames, Joint Meeting the German and Italian Sections of the Combustion Institute, 2018.

  • Zabrodiec, D., Hees, J., Maßmeyer, A., vom Lehn, F., Habermehl, M., Hatzfeld, O. and Kneer, R.Experimental investigation of pulverized coal flames in CO2/O2 - and N2/O2 -atmospheres: Comparison of solid particle radiative characteristics, Fuel, 201: 136-147, 2017.

  • Zabrodiec, D., Hees, J., Möller, G. H., Hatzfeld, O. and Kneer, R.Pulverized coal swirl flames in oxy-fuel conditions: Effects of oxidizer O 2 concentration on flow field and local gas composition, Proceedings of the Combustion Institute, 2018.

  • Zabrodiec, D., Maßmeyer, A., Hees, J., Hatzfeld, O. and Kneer, R.Flow Pattern and Behavior of 40 kWth Pulverized Torrefied Biomass Flames under Atmospheric and Oxy-fuel Conditions, 14th International Conference on Sustainable Development of Energy, Water and Environment Systems, 2019.

  • Maßmeyer, A., Zabrodiec, D., Hees, J., Kreitzberg, T., Hatzfeld, O. and Kneer, R.Flame Pattern Analysis for 60 kWth Flames under Conventional Air-Fired and Oxy-Fuel Conditions for Two Different Types of Coal, 9th International Symposium on Coal Combustion, 2019.

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C2

Unsteady Modeling and Simulation of oxy-fuel Combustion Chambers

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C3

Spectral modeling of thermal radiation in oxy-fuel pulverized coal flames

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R.Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 2016.

  • Kez, V., Liu, F., Consalvi, J.L., Ströhle, J. and Epple, B.A comprehensive evaluation of different radiation models in a gas turbine combustor under conditions of oxy-fuel combustion with dry recycle, Journal of Quantitative Spectroscopy and Radiative Transfer, 172: 121-133, 2016.

  • Kez, V., Consalvi, J.L., Liu, F., Ströhle, J. and Epple, B.Assessment of several gas radiation models for radiative heat transfer calculations in a three-dimensional oxy-fuel furnace under coal-fired conditions, International Journal of Thermal Sciences, 120: 289-302, 2017. doi 

  • von Bohnstein, M., Ströhle, J. and Epple, B.CFD Simulation of an Oxy-fuel Demonstration Power Plant with Application of a WSGG radiation model, Energy Procedia, 158: 1993-1998, 2019.

  • Kez, V., Consalvi, J-L., Liu, F., Gronarz, T., Ströhle, J., Kneer, R. and Epple, B.Investigation of gas and particle radiation modelling in wet oxy-coal combustion atmospheres, International Journal of Heat and Mass Transfer, 133: 1026-1040, 2019.

  • Kez, V., Consalvi, J-L., Liu, F., Gronarz, T., Ströhle, J., Kneer, R. and Epple, B.Investigation of gas and particle radiation modelling in wet oxy-coal combustion atmospheres, International Journal of Heat and Mass Transfer, 133: 1026-1040, 2019.

  • Ströhle, J., Kez, V. and von Bohnstein, M.Evaluation of gas radiation models regarding their applicability to 3D simulations of oxyfuel combustion systems, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Kez, V., Consalvi, J-L., Liu, F., Koch, M., von Bohnstein, M., Ströhle, J., Hatzfeld, O. and Kneer, R.Entwicklung eines Weigthed-Sum-of-Gray-Gases Modells zur Berücksichtigung nicht-grauer Strahlungseigenschaften von Partikeln in Feststoffverbrennungen, 29. Deutscher Flammentag, 2019.

  • von Bohnstein, M., Graeser, P., Schiemann, M., Ströhle, J. and Epple, B.3D CFD Simulation of a 250 MWel Oxy-fuel Boiler with Evaluation of Heat Radiation Calculation, 14th International Conference on Sustainable Development of Energy, Water and Environment Systems, 2019.

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C4

Modelling of radiative properties of particles in pulverized coal flames during oxy-fuel-combustion

  • Gronarz, T., Hatzfeld, O., Habermehl, M. and Kneer, R.On the Importance of Particle Radiation Interaction in the Numerical Simulation of Pulverized Coal Combustion, [10th European Conference on Industrial Furnaces and Boilers : INFUB 10 ; 07/04/2015 - 10/04/2015 ; Porto, Portugal], 2015.

  • Johansson, R., Gronarz, T. and Kneer, R.Influence of Index of Refraction and Particle Size Distribution on Radiative Heat Transfer in a PCC Furnace, ASME Journal of Heat Transfer, 16 (144): 1-21, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R.Modeling of particle radiation interaction in solid fuel combustion with artificial neural networks, Journal of Power Technologies SI: ICCHMT, 96 (3): 206-211, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R.Modeling of Particle Radiative Properties in Coal Combustion depending on Burnout, Heat and Mass Transfer, 2017.

  • Gronarz, T., Schnell, M., Siewert, C., Schneiders, L., Schröder, W. and Kneer, R.Comparison of scattering behaviour for spherical and non-spherical particles in pulverized coal combustion, International Journal of Thermal Sciences, 111: 116-128, 2017.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R.Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R.Approximations for particle scattering phase functions in solid fuel combustion, 41st International Technical Conference on Clean Coal and Fuel Systems, Clearwater, Florida, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R.Modellierung der Streuung und Absorption von Wärmestrahlung an Partikeln bei der Verbrennung von Kohlenstaub, ProcessNet, Jahrestreffen der Fachgruppe Wärme- und Stoffübertragung, Kassel, 2016.

  • Gronarz, T., Hatzfeld, O., Habermehl, M. and Kneer, R.Investigation of modelling approaches for scattering and absorption properties of particles in pulverized coal combustion, Industrial Combustion, 2016.

  • Gronarz, T., Habermehl, M. and Kneer, R.Influence of Approximations for Particle Scattering Phase Functions on Heat Transfer, 10th Mediterranean Combustion Symposium, 2017.

  • Gronarz, T., Schiemann, M. and Kneer, R.Sensitivity Analysis for Parameters for Radiative Heat Transfer in a 3-D pulverized Coal Combustion Scenario, Eurotherm Seminar 110 – Computational Thermal Radiation in Participating Media - VI, Cascais, Portugal, 2018.

  • Gronarz, T., Johansson, R. and Kneer, R.Modeling of Anisotropic Scattering of Thermal Radiation in Pulverized Coal Combustion, Journal of Heat Transfer, 140 (6): 062701, 2018.

  • Kez, V., Consalvi, J-L., Liu, F., Gronarz, T., Ströhle, J., Kneer, R. and Epple, B.Investigation of gas and particle radiation modelling in wet oxy-coal combustion atmospheres, International Journal of Heat and Mass Transfer, 133: 1026-1040, 2019.

  • Gronarz, T., Höges, C., Kez, V., Habermehl, M. and Kneer, R.Comparison of scattering behaviour for inhomogeneous particles in pulverized coal combustion, International Journal of Thermal Sciences, 140: 1-7, 2019.

  • Johansson, R., Gronarz, T. and Kneer, R.Influence of Index of Refraction and Particle Size Distribution on Radiative Heat Transfer in a Pulverized Coal Combustion Furnace, Journal of Heat Transfer, 139 (4): 042702, 2017.

  • Kez, V., Consalvi, J-L., Liu, F., Gronarz, T., Ströhle, J., Kneer, R. and Epple, B.Investigation of gas and particle radiation modelling in wet oxy-coal combustion atmospheres, International Journal of Heat and Mass Transfer, 133: 1026-1040, 2019.

  • Gronarz, T., Hatzfeld, O., Habermehl, M. and Kneer, R.On the importance of of particle radiation interaction in the numerical simulation of pulverized coal combustion, 10th European Conference on Industrial Furnaces and Boilers : INFUB 10, 2015.

  • Gronarz, T., Habermehl, M. and Kneer, R.Influence of Approximations for Particle Scattering Phase Functions on Heat Transfer, 10th Mediterranean Combustion Symposium, 2017.

  • Schiemann, M., Gronarz, T., Graeser, P., Gorewoda, J., Scherer, V. and Kneer, R.A correlation between char emissivity and temperature, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • Kez, V., Consalvi, J-L., Liu, F., Koch, M., von Bohnstein, M., Ströhle, J., Hatzfeld, O. and Kneer, R.Entwicklung eines Weigthed-Sum-of-Gray-Gases Modells zur Berücksichtigung nicht-grauer Strahlungseigenschaften von Partikeln in Feststoffverbrennungen, 29. Deutscher Flammentag, 2019.

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C5

Measurement of the Emissivity of Fuel Particles in oxy-fuel Atmospheres

  • Graeser, P. and Schiemann, M.An attempt to measure the emissivity of burning coal particles in Oxy-fuel atmospheres: Test rig calibration and first results, [40th International Technical Conference on Clean Coal & Fuel Systems 31/05/2015 – 04/06/2015, Clearwater, FL, USA], 2015.

  • Schiemann, M. and .Graeser,Char particle emissivity of two coal chars in oxy-fuel atmospheres, Fuel, 183: 405-413, 2016.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R.Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 2016.

  • Graeser, P. and Schiemann, M.Corrigendum to “Emissivity of burning bituminous coal char particles – Burnout effects” [Fuel 196 (2017) 336–343], Fuel, 234: 225-226, 2018. doi 

  • Schiemann, M., Graeser, P., Vorobiev, N., Heuer, S. and Scherer, V.Combustion investigations with Colombian coal: Summary of experiments and numerical interpretation, The 42nd International Technical Conference on Clean Energy, Clearwater, Florida, 2017.

  • Graeser, P., Wütscher, A., Cerciello, F., Muhler, M. and Schiemann, M.Emissivity Comparison between Chars and Demineralized Coal Chars under Oxycombustion Conditions, Chemical Engineering & Technology, 2018. doi 

  • Graeser, P. and Schiemann, M.Einfluss der Partikelgrösse auf den Partikelemissionsgrad eines Steinkohlekokses, 28. Deutscher Flammentag, 2017.

  • Graeser, P. and Schiemann, M.Corrigendum to “Emissivity of burning bituminous coal char particles – Burnout effects” [Fuel 196 (2017) 336–343], Fuel, 234: 225-226, 2018. doi 

  • Schiemann, M., Gronarz, T., Graeser, P., Gorewoda, J., Scherer, V. and Kneer, R.A correlation between char emissivity and temperature, 2nd International Workshop on Oxy-fuel Combustion, 2018.

  • von Bohnstein, M., Graeser, P., Schiemann, M., Ströhle, J. and Epple, B.3D CFD Simulation of a 250 MWel Oxy-fuel Boiler with Evaluation of Heat Radiation Calculation, 14th International Conference on Sustainable Development of Energy, Water and Environment Systems, 2019.

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C6

Measurement of the temperature depending spectral emissivity of ashes and deposits under oxy-fuel conditions

  • Greffrath, F., Gorewoda, J., Schiemann, M. and Scherer, V.Influence of chemical composition and physical structure on normal radiant emittance characteristics of ash deposits, Fuel, 134 (May): 307-314, 2014.

  • Gorewoda, J., Schiemann, M., Scherer, V. and Neuroth, M.An examination on the influence of the oxidation state of iron on the spectral radiative emittance of synthetic ash layers, [40th International Technical Conference on Clean Coal & Fuel Systems 31/05/2015 – 04/06/2015, Clearwater, FL, USA], 2015.

  • Gronarz, T., Schulze, J., Laemmerhold, M., Graeser, P., Gorewoda, J., Kez, V., Habermehl, M., Schiemann, M., Ströhle, J., Epple, B., Scherer, V. and Kneer, R.Quantification of the influence of parameters determining radiative heat transfer in an oxy-fuel operated boiler, Fuel Processing Technology, 2016.

  • Gorewoda, J. and Scherer, V.Influence of Carbonate Decomposition on Normal Spectral Radiative Emittance in the Context of Oxyfuel Combustion, Energy & Fuels, 30 (11): 9752-9760, 2016.

  • Gorewoda, J. and Scherer, V.Comparison of normal spectral emittance of sulfates and carbonates - significant mineral classes of ashes under oxy-fuel conditions, Combura Symposium, Soesterberg, Niederlande, 2016.

  • Gorewoda, J. and Scherer, V.Normal radiative emittance of coal ash sulfates in the context of oxyfuel combustion, Energy & Fuel, 2017.

  • Gorewoda, J. and Scherer, V.Key parameters for the radiative emittance of ashes of solid fuels, 11TH European Conference on Industrial Furnaces and Boilers, Albufeira, Portugal, 18th-21st April, 2017.

  • Draper, T., Gorewoda, J., Kolczynski, L., Fry, A., Scherer, V., Ring, T. and Eddings, E.The Influence of Temperature on the Spectral Emittance of Ash Deposits taken from a 1.5 MW, Pulverized Coal Test Facility, Clearwater Clean Energy Conference, The 42nd International Technical Conference On Clean Energy, Clearwater, Florida, USA, 2017.

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