TY - CHAP A1 - Correa da Silva, Rodrigo A1 - Krautz, Hans Joachim T1 - Theoretical investigation of pulverized coal combustion in air and in O2/CO2 atmospheres Y1 - 2009 ER - TY - CHAP A1 - Krautz, Hans Joachim T1 - Climate change and the importance of carbon management Y1 - 2009 ER - TY - CHAP A1 - Ifwer, Karin A1 - Wolf, Jens A1 - Anheden, Marie A1 - Sarunac, Nenad A1 - Bullinger, Charlie A1 - Ness, Marc A1 - Höhne, Olaf T1 - Air/Nitrogen lignite dryer as an alternative to a stream dryer in a power plant using oxyfuel technique for CO2 capture Y1 - 2008 ER - TY - GEN A1 - Aha, Ulrich A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim T1 - INSTRA - eine Software für die Instandhaltungsoptimierung Y1 - 2009 ER - TY - CHAP A1 - Tappe, Stephanie A1 - Krautz, Hans Joachim T1 - Gaspotentiometrische Abbranduntersuchungen verschiedener Kohlen in Luft- und O2/CO2-Atmosphären Y1 - 2009 ER - TY - CHAP A1 - Tappe, Stephanie A1 - Krautz, Hans Joachim T1 - Experimental investigations of combustion behaviour in various O2/CO2-atmospheres Y1 - 2009 ER - TY - CHAP A1 - Kaß, Helge A1 - Krautz, Hans Joachim T1 - Verbrennung von Lausitzer Trockenbraunkohle unter Oxyfuel-Prozeßbedingungen in der 0,5 MWth-Tangentialfeuerung Y1 - 2008 ER - TY - CHAP A1 - Findeisen, Alexander T1 - Analysis of corrosion behaviour of materials in oxyfuel fired power plants Y1 - 2008 ER - TY - GEN A1 - Dahash, Abdulrahman A1 - Mieck, Sebastian A1 - Ochs, Fabian A1 - Krautz, Hans Joachim T1 - A comparative study of two simulation tools for the technical feasibility in terms of modeling district heating systems: An optimization case study T2 - Simulation Modelling Practice and Theory N2 - District heating dynamic models arise as an alternative approach to in-situ experimental investigations. The main advantage of dynamic modeling and simulation is the possibility to avoid technical and operational risks that might occur during in-situ experimental investigations (e.g. heat demand is not met, damages in the energy systems etc.). Within this study, the authors present two models for an existing district heating system in Cottbus, Germany. One model is developed using the tool EBSILON Professional, while the other one is developed using the Simscape toolbox for physical modeling in Matlab/Simulink. The models were experimentally validated against measured data from the considered district heating system. The results show that the Simscape model has a better fit and better response than the EBSILON model. Yet, some discrepancies were found between the measured and the simulated data and, therefore, the uncertainties of the models were addressed. A comparative study between both tools is presented. The EBSILON models permit only unidirectional flow, whereas the Simscape toolbox permits reverse flow. Nevertheless, the EBSILON model outperforms the Simscape model in computation time. In addition, this study presents an approach for dynamic thermo-hydraulic modeling of district heating networks. This approach is utilized to examine the role of district heating networks as heat storage as an optimization configuration. The numerical results show less start-ups for additional heat sources. Yet, higher heat losses from the network are observed due to the installation of unburied pipelines. KW - Dynamic thermo-hydraulic modeling and simulation KW - Simscape KW - EBSILON Professional KW - District heating systems KW - Heating network as heat storage Y1 - 2019 U6 - https://doi.org/10.1016/j.simpat.2018.11.008 SN - 1569-190X VL - 91 SP - 48 EP - 68 ER - TY - GEN A1 - Correa da Silva, Rodrigo A1 - Kangwanpongpan, Tanin A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim A1 - Meyer, Marco A1 - Roberg, Benedikt T1 - Oxy-fuel Combustion Studies Applying a Novel Test Facility - First Numerical Results Y1 - 2011 ER - TY - THES A1 - Abang, Roger Atini T1 - Thermodynamic modeling and experimental investigations of high temperature corrosion and oxidation due to increased power plant cycling KW - Cycling KW - Flexible generation KW - High temperature corrosion; Oxidation KW - Oxidation KW - Thermo-chemical modeling Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-40032 ER - TY - THES A1 - Missagia, Bruna T1 - Agricultural and forestry residues for decentralized energy generation in Brazil Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-25180 ER - TY - THES A1 - Asegehegn, Teklay Weldeabzgi T1 - Investigation of bubble hydrodynamics in gas-solid fluidized beds containing immersed horizontal tube banks for lignite drying application Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-23578 UR - http://opus.kobv.de/btu/volltexte/2012/2357/ ER - TY - GEN A1 - Reimann, Ansgar A1 - Kohlenbach, Paul A1 - Röntzsch, Lars T1 - Development of a novel quasi-2D PEM Electrolyzer Model in Modelica T2 - Proceedings of the 15th International Modelica Conference 2023, Aachen, October 9-11 N2 - To increase the efficiency of PEM electrolysis, simulation models are required that accurately describe the system's electrochemical and thermal behavior in a computationally efficient manner and are thus suitable for developing control strategies. Therefore, a pseudo-2D PEM electrolyzer model is presented in this paper, which is a compromise between the previously developed models regarding their model complexity. The electrochemical behavior is described with equations commonly used in the literature and the thermal behavior with correlations for gas-liquid heat transfer. Preliminary validation indicates that the model can describe the electrochemical behavior and thermal dynamics of a PEM electrolysis stack with good accuracy. Y1 - 2023 U6 - https://doi.org/10.3384/ecp20463 SN - 1650-3686 PB - Linköping University Electronic Press ER - TY - CHAP A1 - Sampangi, Shiva Kumar A1 - Röntzsch, Lars ED - Reedijk, Jan T1 - Electrolysis – Proton-exchange membrane electrolyzer | Proton exchange membrane water electrolysis: State-of-the-art technique and systems T2 - Reference Module in Chemistry, Molecular Sciences and Chemical Engineering Y1 - 2024 SN - 978-0-12-409547-2 U6 - https://doi.org/10.1016/B978-0-323-96022-9.00237-1 PB - Elsevier ER -