TY - JOUR A1 - Kahlert, Joachim A1 - Krautz, Hans Joachim T1 - Methodik zur Ermittlung optimaler Instandhaltungsperioden unter der Bedingung unscharfer Ausgangsdaten Y1 - 2006 ER - TY - CHAP A1 - Kahlert, Joachim A1 - Krautz, Hans Joachim T1 - Beispiele für Instandhaltung mit Risiko im KW Lippendorf Y1 - 2005 ER - TY - CHAP A1 - Jentsch, N. A1 - Höhne, Olaf T1 - Druckaufgeladene Dampf-Wirbelschicht-Trocknung (DDWT): Versuchsanlage zur DDWT mit 5 t/h TBK-Durchsatz Y1 - 2007 ER - TY - GEN A1 - Jana, Sayantan A1 - Chauhan, Nikhil A1 - Muthukumar, Palanisamy A1 - Röntzsch, Lars T1 - Transient analysis and performance prediction of a metal hydride based thermal energy storage system with Integrated cooling and heat upgradation T2 - Heat transfer engineering : an international journal N2 - This work embodies a numerical model development and simulation of a metal hydride-based thermal energy storage system with integrated cooling as well heat upgradation. The concept of this system is unique as it operates on thermal drive during the energy storage cycle while during the energy release cycle it is compressor-operated. The utility of the mechanical compressor in the system is two-fold i.e., one operation mode would harness cooling, and another operation mode would fetch heat upgradation. The numerical model devised is a lumped parameter model which solves for hydrogen concentration and temperature of the linked metal hydride reactors. The proposed thermal energy storage system is of 5 MJ capacity which engages tube bundle reactor settings for both high-temperature and low-temperature hydride alloys. Each energy storage and release cycles are simulated for a fixed duration of 10000 s. For a fixed heat supply and heat recovery temperatures of 623 K and 573 K, the system offered cooling coefficient of performance in the range of 1.43–1.58 at 283–293 K. Also, approximately 77% of the energy stored at 623 K could be retrieved at 573 K. In heat upgradation operation mode, 10–30 K temperature lift was accomplished. KW - Metal Hydride KW - Thermal Energy Storage System KW - Simulation Y1 - 2025 U6 - https://doi.org/10.1080/01457632.2025.2521599 SN - 0145-7632 SP - 1 EP - 13 PB - Taylor & Francis CY - London 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 - CHAP A1 - Höhne, Olaf A1 - Martin, Jörg S. A1 - Jentsch, N. A1 - Thannhäuser, L. T1 - Druckaufgeladene Dampfwirbelschicht-Trocknung (DDWT) von Braunkohlen: Inbetriebnahme des 10 t/h-Versuchstrockner der Vattenfall Europe AG und erste Betriebsergebnisse Y1 - 2008 ER - TY - GEN A1 - Höhne, Olaf A1 - Lechner, Stefan A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Drying of Lignite in a Pressurized Steam Fluidized Bed - Theory and Experiments Y1 - 2010 ER - TY - THES A1 - Höhne, Olaf T1 - Grundlagenuntersuchungen zum Einfluss des Systemdrucks auf die Trocknung von Braunkohle in Wasserdampf Y1 - 2012 UR - http://www.cuvillier.de/flycms/de/html/30/-UickI3zKPS3wdUg=/Buchdetails.html SN - 978-3-9540407-6-6 PB - Cuvillier CY - Göttingen ER - TY - GEN A1 - Horsfield, Brian A1 - Scheck-Wenderoth, Magdalena A1 - Krautz, Hans Joachim A1 - Mutti, Maria T1 - Geoenergy: From visions to solutions KW - CCS Y1 - 2010 U6 - https://doi.org/10.1016/j.chemer.2010.06.002 ER - TY - CHAP A1 - Harms, G. A1 - Klatt, Matthias A1 - Krautz, Hans Joachim T1 - Hybrid Power Plant and Hydrogen Research Centre Y1 - 2011 ER - TY - CHAP A1 - Guerrero, Cinthya A1 - Klatt, Matthias A1 - Krautz, Hans Joachim T1 - Energy transition in Germany: a case study on renewable energy integration and its impact in the operation and efficiency of coal-fired power plants T2 - Southern African Energy Efficiency Convention (SAEEC 2017), 14th and 15th November 2017, Gauteng, Südafrika Y1 - 2017 UR - http://www.saee.org.za/cproceedings2017.aspx#K SN - 978-0-6399125-0-9 ER - TY - CHAP A1 - Griebe, Steffen A1 - Owczarek, Christian A1 - Thielen, W. A1 - Paulick, G. T1 - Verbrennung von Lausitzer Braunkohlen und Mischbrennstoffen in einer Zykloidfeuerung - Einsatzgebiet dezentraler Wärmemarkt Y1 - 1999 ER - TY - CHAP A1 - Griebe, Steffen A1 - Krautz, Hans Joachim A1 - Paulick, G. T1 - Möglichkeiten der thermischen Verwertung von mechanisch entwässertem Klärschlamm und weiteren Reststoffen in einer mit Trockenbraunkohle betriebenen Zykloidfeuerung Y1 - 2000 ER - TY - CHAP A1 - Griebe, Steffen A1 - Krautz, Hans Joachim A1 - Massow, R. T1 - Druck-Zykloidfeuerung - ein Feuerungssystem für die thermische Umsetzung von Lausitzer Trockenbraunkohle N2 - Vortrag anlässlich des Zweiten Statusseminar "Druckflamm", Aachen Y1 - 2000 ER - TY - JOUR A1 - Griebe, Steffen A1 - Krautz, Hans Joachim A1 - Kirmse, Dietrich T1 - Mitverbrennung von Biomassen in braunkohlegefeuerten Kraftwerken Y1 - 2002 ER - TY - CHAP A1 - Griebe, Steffen A1 - Krautz, Hans Joachim A1 - Altmann, H. A1 - Kluger, F. T1 - Erste Verbennungsuntersuchungen zum Oxyfuel-Prozess in einer 0,5 MWth-Tangentialfeuerung Y1 - 2005 ER - TY - CHAP A1 - Griebe, Steffen A1 - Krautz, Hans Joachim T1 - Development of a cycloid combustion system for lignite and co-combustion of sewages sludge and biomass with high efficiency and low emission Y1 - 2001 ER - TY - THES A1 - Griebe, Steffen T1 - Modellierung der Verbrennung von Braunkohlen in einer Zykloidfeuerung unter Berücksichtigung der Schadstoffemissionen CO, NOx und SO2 Y1 - 2008 SN - 978-3-86727-512-5 SN - 3-86727-512-2 PB - Cuvillier-Verlag CY - Göttingen ER - TY - GEN A1 - Fischer, Ulrich A1 - Voigt, André A1 - Tannert, Daniel A1 - Krautz, Hans Joachim T1 - Standortevaluierung und System-pfadanalyse im Forschungsprojekt WESpe – Wissenschaftliche Forschung zu Windwasserstoff-Energiespeichern T2 - Nutzung regenerativer Energiequellen und Wasserstofftechnik 2016 ; energie-symposium, 23. Symposium Nutzung Regenerativer Energiequellen und Wasserstofftechnik, Stralsund, 3. - 5. November 2016 Y1 - 2016 SN - 978-3-9817740-1-6 VL - 2016 SP - 143 EP - 147 PB - Fachhochschule Stralsund CY - Stralsund ER - TY - CHAP A1 - Fischer, Ulrich A1 - Voigt, Andre A1 - Tannert, Daniel A1 - Krautz, Hans Joachim T1 - Pressure and Temperature Influence on Alkine Electrolysis Performance T2 - Proceedings of 5th European PEFC and H2 Forum, Luzern, Schweiz, June/July 2015 Y1 - 2015 SN - 978-3-905592-19-1 PB - European Fuel Cell Forum AG CY - Luzern-Adligenswil ER - TY - CHAP A1 - Fischer, Ulrich A1 - Voigt, Andre A1 - Tannert, Daniel A1 - Krautz, Hans Joachim T1 - Influence of variable operating parameters on the process of the advanced alkaline pressurised electrolysis T2 - 9th International Renewable Energy Storage Conference and Exhibition (IRES 2015), 09 - 11 March 2015, Düsseldorf, Germany Y1 - 2015 PB - EUROSOLAR [u.a.] CY - Bonn ER - TY - CHAP A1 - Fischer, Ulrich A1 - Voigt, Andre A1 - Tannert, Daniel A1 - Krautz, Hans Joachim T1 - Druckelektrolyse zur Wasserstoffherstellung- eine Kurzübersicht zu energetischen Vor- und Nachteilen T2 - Nutzung regenerativer Energiequellen und Wasserstofftechnik 2015, 22. Symposium Nutzung Regenerativer Energiequellen und Wasserstofftechnik, Stralsund, 5. - 7. November 2015 Y1 - 2015 SN - 978-3-9817740-0-9 SP - 30 EP - 36 PB - Fachhochschule Stralsund CY - Stralsund ER - TY - CHAP A1 - Fischer, Ulrich A1 - Tannert, Daniel A1 - Voigt, Andre A1 - Ziems, Christian A1 - Krautz, Hans Joachim A1 - Barz, Mirko A1 - Dinkler, Konstantin T1 - Renewable Energy Storage by Hydrogen Production from Water Electrolysis T2 - Technical and Economic Aspects of Renewable Energies - Know-How Transfer as Development Opportunity for Southern Europe Y1 - 2016 SN - 978-3-86387-721-7 SP - 118 EP - 126 PB - Mensch und Buch CY - Berlin ER - TY - CHAP A1 - Fischer, Ulrich A1 - Rabann, Bernd A1 - Krautz, Hans Joachim T1 - Wasserstoff – Elektrolyse T2 - Erneuerbare Energien : VBI-Leitfaden Y1 - 2015 SP - 85 EP - 92 PB - Verband Beratender Ingenieure CY - Berlin ET - 1. Auflage ER - TY - CHAP A1 - Fischer, Ulrich A1 - Krautz, Hans Joachim A1 - Wenske, Michael A1 - Tannert, Daniel A1 - Krüger, Perco A1 - Ziems, Christian A1 - Stolten, Detlef A1 - Emonts, Bernd T1 - Hydrogen Hybrid Power Plant in Prenzlau, Brandenburg T2 - Hydrogen Science and Engineering - Materials, Processes, Systems and Technology, Bd. 2 Y1 - 2016 SN - 978-3-5273323-8-0 SP - 1033 EP - 1052 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Findeisen, Alexander A1 - Rombrecht, Hans-Bernd A1 - Krautz, Hans Joachim T1 - Qualitätsanforderungen an alternative Biomasse-Brennstoffe Y1 - 2006 ER - TY - CHAP A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim A1 - Hauke, Th. A1 - Kranzmann, A. T1 - Corrosion Processes and Carbonisation of Boiler Materials under Air and Oxyfuel Process Conditions Y1 - 2011 ER - TY - CHAP A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim T1 - Untersuchungen zum Korrosionsverhalten ausgewählter Werkstoffe bei verschiedenen Betriebsbedingungen Y1 - 2009 ER - TY - GEN A1 - Findeisen, Alexander A1 - Klatt, Matthias A1 - Krautz, Hans Joachim T1 - Examination of the corrosion behaviour of selected power plant materials under various operating conditions KW - Korrosion KW - CCS Y1 - 2010 U6 - https://doi.org/http://dx.doi.org/10.1016/j.chemer.2010.05.006 ER - TY - CHAP A1 - Findeisen, Alexander A1 - Correa da Silva, Rodrigo A1 - Krautz, Hans Joachim T1 - Konzeptionelle und verfahrenstechnische Umsetzung eines 400 kWth-Verbrennungsversuchsstandes - erste Erfahrungen aus der Inbetriebsetzung Y1 - 2011 ER - TY - CHAP A1 - Findeisen, Alexander A1 - Abang, Roger Atini A1 - Krautz, Hans Joachim T1 - Corrosion Behaviour of Selected Power Plant Materials Under Oxyfuel Combustion Conditions Y1 - 2011 ER - TY - CHAP A1 - Findeisen, Alexander T1 - Analysis of corrosion behaviour of materials in oxyfuel fired power plants Y1 - 2008 ER - TY - GEN A1 - Danila, Kevin A1 - Kunz, Philip A1 - Röntzsch, Lars T1 - Dynamic operation of low-temperature electrolyzer systems in modular large-scale chemical plants T2 - Chemie - Ingenieur - Technik : CIT N2 - As one of the main contributors to the greenhouse gas emissions worldwide, the reduction of emissions in chemical industry is indispensable. The production of hydrogen from renewable energy sources using water electrolysis can contribute to this goal. However, the dynamic character of renewable energy sources leads to major challenges regarding the dynamic operation of the production process. Here, a model of a modular low-temperature electrolyzer plant is presented. The effect of available time resolution of the source electricity as well as the impact of the integration time step is studied. With the presented model the positive effect of load-dependent operation of modular electrolyzer plants with fluctuating availability of source electricity on the total hydrogen output is demonstrated. KW - Dynamic simulation KW - Electrolyzer systems KW - Modularization KW - Renewable energy KW - Water electrolysis Y1 - 2025 U6 - https://doi.org/10.1002/cite.202400140 SN - 0009-286X VL - 2025 SP - 1 EP - 11 PB - Wiley-VCH GmbH 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 - CHAP A1 - Correa da Silva, Rodrigo A1 - Missagia, Bruna A1 - Tappe, Stephanie A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim T1 - Development of low CO2 technologies for oxyfuel combustion in power plants Y1 - 2009 ER - TY - CHAP A1 - Correa da Silva, Rodrigo A1 - Krautz, Hans Joachim T1 - Theoretical analysis of heat transfer in a pulverized coal combustion chamber under O2/CO2 atmosphere Y1 - 2009 ER - 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 - 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 - CHAP A1 - Correa da Silva, Rodrigo A1 - Kangwanpongpan, Tanin A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim T1 - Aspects of Numerical Simulation of Coal Combustion under Oxyfuel Atmospheres Y1 - 2010 ER - TY - CHAP A1 - Correa da Silva, Rodrigo A1 - Kangwanpongpan, Tanin A1 - Findeisen, Alexander A1 - Krautz, Hans Joachim T1 - Description of a 0.4 MWth laboratory facility for oxy-fuel combustion studies Y1 - 2011 ER - TY - CHAP A1 - Chalupnik, Rolf W. A1 - Krautz, Hans Joachim A1 - Wirtz, M. A1 - Stuhlmüller, F. T1 - Applied Research for a New Generation of Lignite-Fired Combined Cycle Power Plant Using Circulating Pressurized Fluidized Bed Combustion Y1 - 2001 ER - TY - CHAP A1 - Chalupnik, Rolf W. A1 - Krautz, Hans Joachim A1 - Schulze, H. A1 - Stuhlmüller, F. A1 - Thielen, W. T1 - Plant studies and experiments for a lignite-fired combined-cycle power plant using circulating pressurized fluidized bed combustion Y1 - 1999 ER - TY - THES A1 - Chalupnik, Rolf W. T1 - Druckwirbelschichtkraftwerke : Kombikraftwerke mit Druckwirbelschichtfeuerung ; Entwicklung für Braunkohle unter besonderer Berücksichtigung des Emissionsverhaltens Y1 - 1999 SN - 3-925349-31-6 N1 - Dissertation u.d.T.: Kombikraftwerke mit Druckwirbelschichtfeuerung PB - Energiewirtschaft und Technik Verlagsges. CY - Essen ER - TY - CHAP A1 - Carotenuto, A. S. A1 - Correa da Silva, Rodrigo A1 - Rech, R. A1 - Marcilio, N. R. A1 - Smith Schneider, Paulo A1 - Krautz, Hans Joachim T1 - Preliminary Investigation of the Global Kinetic Parameters of low-rank coals under oxy-fuel conditions Y1 - 2011 ER - TY - JOUR A1 - Bär, F. A1 - Müller, S. A1 - Rost, M. T1 - Effiziente Braunkohleverstromung in einer Druckwirbelschichtfeuerung mit Teilvergasung Y1 - 2004 ER - TY - CHAP A1 - Asegehegn, Teklay Weldeabzgi A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Influence of Horizontal Tubes, Averaging Periods and Extraction Methods on the Hydrodynamics of Bubbling Gas-Solid Fluidized Beds Y1 - 2010 ER - TY - GEN A1 - Asegehegn, Teklay Weldeabzgi A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Numerical Study of Bubbling Gas-Solid Fluidized Beds Hydrodynamics: Influence of Immersed Horizontal Tubes and Data Analysis Y1 - 2011 UR - http://www.bepress.com/ijcre/vol9/A16 ER - TY - GEN A1 - Asegehegn, Teklay Weldeabzgi A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Numerical simulation and experimental validation of bubble behavior in 2D gas-solid fluidized beds with immersed horizontal tubes Y1 - 2011 U6 - https://doi.org/http://dx.doi.org/10.1016/j.ces.2011.07.056 ER - TY - GEN A1 - Asegehegn, Teklay Weldeabzgi A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Investigation of bubble behavior in fluidized beds with and without immersed horizontal tubes using a digital image analysis technique Y1 - 2011 U6 - https://doi.org/http://dx.doi.org/10.1016/j.powtec.2011.03.025 ER - TY - GEN A1 - Asegehegn, Teklay Weldeabzgi A1 - Schreiber, Matthias A1 - Krautz, Hans Joachim T1 - Influence of two- and three-dimensional simulations on bubble behaviorin gas-solid fluidized beds with and without immersed horizontal tubes Y1 - 2012 U6 - https://doi.org/10.1016/j.powtec.2011.11.050 ER -