@inproceedings{CorreadaSilvaKrautz, author = {Correa da Silva, Rodrigo and Krautz, Hans Joachim}, title = {Theoretical investigation of pulverized coal combustion in air and in O2/CO2 atmospheres}, language = {en} } @inproceedings{Krautz, author = {Krautz, Hans Joachim}, title = {Climate change and the importance of carbon management}, language = {en} } @inproceedings{IfwerWolfAnhedenetal., author = {Ifwer, Karin and Wolf, Jens and Anheden, Marie and Sarunac, Nenad and Bullinger, Charlie and Ness, Marc and H{\"o}hne, Olaf}, title = {Air/Nitrogen lignite dryer as an alternative to a stream dryer in a power plant using oxyfuel technique for CO2 capture}, language = {de} } @misc{AhaFindeisenKrautz, author = {Aha, Ulrich and Findeisen, Alexander and Krautz, Hans Joachim}, title = {INSTRA - eine Software f{\"u}r die Instandhaltungsoptimierung}, language = {de} } @inproceedings{TappeKrautz, author = {Tappe, Stephanie and Krautz, Hans Joachim}, title = {Gaspotentiometrische Abbranduntersuchungen verschiedener Kohlen in Luft- und O2/CO2-Atmosph{\"a}ren}, language = {de} } @inproceedings{TappeKrautz, author = {Tappe, Stephanie and Krautz, Hans Joachim}, title = {Experimental investigations of combustion behaviour in various O2/CO2-atmospheres}, language = {en} } @inproceedings{KassKrautz, author = {KaƟ, Helge and Krautz, Hans Joachim}, title = {Verbrennung von Lausitzer Trockenbraunkohle unter Oxyfuel-ProzeƟbedingungen in der 0,5 MWth-Tangentialfeuerung}, language = {de} } @inproceedings{Findeisen, author = {Findeisen, Alexander}, title = {Analysis of corrosion behaviour of materials in oxyfuel fired power plants}, language = {en} } @misc{DahashMieckOchsetal., author = {Dahash, Abdulrahman and Mieck, Sebastian and Ochs, Fabian and Krautz, Hans Joachim}, title = {A comparative study of two simulation tools for the technical feasibility in terms of modeling district heating systems: An optimization case study}, series = {Simulation Modelling Practice and Theory}, volume = {91}, journal = {Simulation Modelling Practice and Theory}, issn = {1569-190X}, doi = {10.1016/j.simpat.2018.11.008}, pages = {48 -- 68}, abstract = {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.}, language = {en} } @misc{CorreadaSilvaKangwanpongpanFindeisenetal., author = {Correa da Silva, Rodrigo and Kangwanpongpan, Tanin and Findeisen, Alexander and Krautz, Hans Joachim and Meyer, Marco and Roberg, Benedikt}, title = {Oxy-fuel Combustion Studies Applying a Novel Test Facility - First Numerical Results}, language = {en} } @phdthesis{Abang, author = {Abang, Roger Atini}, title = {Thermodynamic modeling and experimental investigations of high temperature corrosion and oxidation due to increased power plant cycling}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-40032}, pages = {201}, language = {en} } @phdthesis{Missagia, author = {Missagia, Bruna}, title = {Agricultural and forestry residues for decentralized energy generation in Brazil}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus-25180}, pages = {214}, language = {en} } @phdthesis{Asegehegn, author = {Asegehegn, Teklay Weldeabzgi}, title = {Investigation of bubble hydrodynamics in gas-solid fluidized beds containing immersed horizontal tube banks for lignite drying application}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus-23578}, language = {en} } @misc{ReimannKohlenbachRoentzsch, author = {Reimann, Ansgar and Kohlenbach, Paul and R{\"o}ntzsch, Lars}, title = {Development of a novel quasi-2D PEM Electrolyzer Model in Modelica}, series = {Proceedings of the 15th International Modelica Conference 2023, Aachen, October 9-11}, journal = {Proceedings of the 15th International Modelica Conference 2023, Aachen, October 9-11}, publisher = {Link{\"o}ping University Electronic Press}, issn = {1650-3686}, doi = {10.3384/ecp20463}, pages = {9}, abstract = {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.}, language = {en} } @incollection{SampangiRoentzsch, author = {Sampangi, Shiva Kumar and R{\"o}ntzsch, Lars}, title = {Electrolysis - Proton-exchange membrane electrolyzer | Proton exchange membrane water electrolysis: State-of-the-art technique and systems}, series = {Reference Module in Chemistry, Molecular Sciences and Chemical Engineering}, booktitle = {Reference Module in Chemistry, Molecular Sciences and Chemical Engineering}, editor = {Reedijk, Jan}, publisher = {Elsevier}, isbn = {978-0-12-409547-2}, doi = {10.1016/B978-0-323-96022-9.00237-1}, language = {en} }