@inproceedings{ZiemsKrautz, author = {Ziems, Christian and Krautz, Hans Joachim}, title = {Grid integration of renewable energies and hydrogen research at BTU Cottbus}, series = {Dena Konferenz "Power to Gas - innovative Systeml{\"o}sungen f{\"u}r ein zukunftsf{\"a}higes Energiesystem entwickeln", Berlin, 2012}, booktitle = {Dena Konferenz "Power to Gas - innovative Systeml{\"o}sungen f{\"u}r ein zukunftsf{\"a}higes Energiesystem entwickeln", Berlin, 2012}, language = {en} } @inproceedings{WenskeTillmannKrautz, author = {Wenske, Michael and Tillmann, Christine and Krautz, Hans Joachim}, title = {Aktuelle Entwicklungen der alkalischen Elektrolyse}, series = {4. Energiefachtagung, Cottbus, 2012}, booktitle = {4. Energiefachtagung, Cottbus, 2012}, language = {de} } @inproceedings{MerzschPosseltWiedemannetal., author = {Merzsch, Matthias and Posselt, Joachim and Wiedemann, Philipp and Lechner, Stefan and Krautz, Hans Joachim}, title = {Druckaufgeladene Dampfwirbelschicht-Trocknung (DDWT) von Braunkohlen: Grundlagenuntersuchungen zur verfahrenstechnischen Optimierung der Dampfwirbelschicht-Trocknung von Braunkohlen}, series = {Kraftwerkstechnik, Bd. 4, 44. Kraftwerkstechnisches Kolloquium, Dresden}, booktitle = {Kraftwerkstechnik, Bd. 4, 44. Kraftwerkstechnisches Kolloquium, Dresden}, publisher = {TK-Verlag}, address = {Nietwerder}, isbn = {978-3-935317-87-0}, pages = {923 -- 934}, language = {de} } @misc{KangwanpongpanFrancaCorreadaSilvaetal., author = {Kangwanpongpan, Tanin and Franca, Francis H. R. and Correa da Silva, Rodrigo and Smith Schneider, Paulo and Krautz, Hans Joachim}, title = {New correlations for the weighted-sum-of-gray-gases model in oxy-fuel conditions based on HITEMP 2010 database}, series = {International Journal of Heat and Mass Transfer}, volume = {55}, journal = {International Journal of Heat and Mass Transfer}, number = {25-26}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2012.07.032}, pages = {7419 -- 7433}, language = {en} } @inproceedings{TannertZiemsKrautz, author = {Tannert, Daniel and Ziems, Christian and Krautz, Hans Joachim}, title = {Overview and initial experiences of a 60 bar alkaline electrolyser prototype}, series = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, booktitle = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, publisher = {Wydawnistwo Uczelnianie ZUT}, address = {Szczecinie}, isbn = {978-83-7663-121-9}, language = {en} } @inproceedings{KrauseKrautzLehmannetal., author = {Krause, S. and Krautz, Hans Joachim and Lehmann, J. and Luschtinetz, Thomas and Kruse, T.}, title = {Operating regime of a hydrogen-storage-loop power plant of grid relevant dimensions}, series = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, booktitle = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, publisher = {Wydawnistwo Uczelnianie ZUT}, address = {Szczecinie}, isbn = {978-83-7663-121-9}, language = {en} } @inproceedings{ZiemsTannertKrautz, author = {Ziems, Christian and Tannert, Daniel and Krautz, Hans Joachim}, title = {Approaches for simulation of an advanced alkaline water electrolyzer prototype}, series = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, booktitle = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, publisher = {Wydawnistwo Uczelnianie ZUT}, address = {Szczecinie}, isbn = {978-83-7663-121-9}, language = {en} } @inproceedings{ZiemsTannertKrautz, author = {Ziems, Christian and Tannert, Daniel and Krautz, Hans Joachim}, title = {Grundlagenforschung zur Optimierung des alkalischen Druckelektrolyseprozesses am 25 bar Einzel-Zell-Versuchsstand - Projektvorstellung}, series = {19. Symposium - Nutzung regenerativer Energiequellen und Wasserstofftechnik, 8. - 10. November 2012 Stralsund}, booktitle = {19. Symposium - Nutzung regenerativer Energiequellen und Wasserstofftechnik, 8. - 10. November 2012 Stralsund}, publisher = {Fachhochschule}, address = {Stralsund}, isbn = {978-3-9813334-5-9}, language = {de} } @inproceedings{TannertZiemsTillmannetal., author = {Tannert, Daniel and Ziems, Christian and Tillmann, Christine and Krautz, Hans Joachim}, title = {Einrichtung und Erfahrungen aus der Inbetriebnahme einer fortschrittlichen alkalischen Druckelektrolyseanlage}, series = {19. Symposium - Nutzung regenerativer Energiequellen und Wasserstofftechnik, 8. - 10. November 2012 Stralsund}, booktitle = {19. Symposium - Nutzung regenerativer Energiequellen und Wasserstofftechnik, 8. - 10. November 2012 Stralsund}, publisher = {Fachhochschule}, address = {Stralsund}, isbn = {978-3-9813334-5-9}, language = {de} } @inproceedings{AhaKochKrautz, author = {Aha, Ulrich and Koch, Alexander and Krautz, Hans Joachim}, title = {Finding the optimal power plant maintenance strategy with fuzzy input data}, series = {11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012, (PSAM11 ESREL 2012), Helsinki, Finland 25 - 29 June 2012, Vol. 1}, booktitle = {11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012, (PSAM11 ESREL 2012), Helsinki, Finland 25 - 29 June 2012, Vol. 1}, publisher = {IAPSAM \& ESRA}, address = {Red Hook, NY}, isbn = {978-1-62276-436-5}, pages = {341 -- 347}, language = {en} } @misc{MerzschLechnerKrautz, author = {Merzsch, Matthias and Lechner, Stefan and Krautz, Hans Joachim}, title = {Heat-transfer from single horizontal tubes in fluidized beds: Influence of tube diameter, moisture and diameter-definition by Geldart C fines content}, series = {Powder Technology}, journal = {Powder Technology}, issn = {1873-328X}, doi = {10.1016/j.powtec.2012.12.002}, language = {en} } @inproceedings{KangwanpongpanNimtzKlattetal., author = {Kangwanpongpan, Tanin and Nimtz, Michael and Klatt, Matthias and Krautz, Hans Joachim}, title = {Numerical Investigations for Oxy-fuel Combustion in 0.4 MWth Pilot Scale Furnace}, series = {Geo-Energy International Conference}, booktitle = {Geo-Energy International Conference}, language = {en} } @misc{ZiemsTannertKrautz, author = {Ziems, Christian and Tannert, Daniel and Krautz, Hans Joachim}, title = {Project presentation: Design and installation of advanced high pressure alkaline electrolyzer-prototypes}, series = {Energy Procedia}, volume = {29}, journal = {Energy Procedia}, issn = {1876-6102}, doi = {10.1016/j.egypro.2012.09.087}, pages = {744 -- 753}, language = {en} } @phdthesis{Schreiber, author = {Schreiber, Matthias}, title = {Modellierung von Hydrodynamik und W{\"a}rme{\"u}bertragung in blasenbildenden Wirbelschichten zur Trocknung von Braunkohle}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus-27263}, language = {de} } @phdthesis{Lechner, author = {Lechner, Stefan}, title = {Untersuchungen zur Berechnung und Optimierung des W{\"a}rme{\"u}bergangs bei der Dampfwirbelschicht-Trocknung am Beispiel von Lausitzer Braunkohlen}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus-27120}, language = {de} } @inproceedings{WieseNimtzMoelleretal., author = {Wiese, Bernd and Nimtz, Michael and M{\"o}ller, Fabian and Otto, Christopher and Liebscher, Axel and Schmidt-Hattenberger, Cornelia}, title = {Determination of thermodynamics in a CO2 injection well using pressure and distributed temperature sensing}, series = {Models - repositories of knowledge, proceedings of Model CARE2011 held in Leipzig, Germany, September 2011}, booktitle = {Models - repositories of knowledge, proceedings of Model CARE2011 held in Leipzig, Germany, September 2011}, publisher = {IAHS Publication}, address = {Wallingford}, isbn = {978-1-907161-34-6}, pages = {286 -- 290}, language = {en} } @phdthesis{Hoehne, author = {H{\"o}hne, Olaf}, title = {Grundlagenuntersuchungen zum Einfluss des Systemdrucks auf die Trocknung von Braunkohle in Wasserdampf}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {978-3-9540407-6-6}, pages = {XV, 141}, language = {de} } @inproceedings{WiedemannKrautz, author = {Wiedemann, Philipp and Krautz, Hans Joachim}, title = {Numerical study of gas-solid fluidized beds: Analysis of pressure fluctuations for detection of disturbed fluidization}, series = {The 14th International Conference on Fluidization - From Fundamentals to Products}, booktitle = {The 14th International Conference on Fluidization - From Fundamentals to Products}, publisher = {Engineering Conferences International}, address = {New York}, abstract = {Numerical simulations using the Two Fluid Model are performed for gas-solid bubbling fluidized beds. The possibility to detect disturbances in the fluidization process is investigated by common analysis of pressure fluctuations and variation of the computational domain. Additionally the influences of different particle sizes and superficial gas velocities are studied. The results are compared with bubble properties obtained from a digital image analysis technique}, language = {en} } @misc{AbangLiskKrautz, author = {Abang, Roger Atini and Lisk, Alexander and Krautz, Hans Joachim}, title = {Fireside corrosion of superheater materials under oxy-coal firing conditions}, series = {Energy Procedia}, volume = {40}, journal = {Energy Procedia}, issn = {1876-6102}, doi = {10.1016/j.egypro.2013.08.035}, pages = {304 -- 311}, abstract = {The present study investigates the fireside corrosion behavior of selected superheater materials, namely: T24, P92, VM12-SHC, A800HT, and 7RE10 under oxy-coal combustion atmospheres. Data on mass change, scale thickness, metal loss, surface morphology and micro-structural characteristics of corrosion products were obtained. The alloy specimens were analyzed by SEM-EDX, light microscopy and X-Ray diffraction techniques. The results after 2000 hours of exposure at a metal surface temperature of 600 °C indicate that metal wastage increased with decreasing Cr-content under oxy-coal conditions.}, language = {en} } @misc{KrautzNimtz, author = {Krautz, Hans Joachim and Nimtz, Michael}, title = {Flexible Operation of CCS Power Plants to Match Variable Renewable Energies}, series = {Energy Procedia}, volume = {2013}, journal = {Energy Procedia}, number = {40}, issn = {1876-6102}, doi = {10.1016/j.egypro.2013.08.034}, pages = {294 -- 303}, abstract = {The German Energiewende is resulting in high grid load changes caused by renewable energies. Therefore flexibility of power plants is getting more and more important. Future CCS power plants are usually equipped with more components than conventional power plants, resulting in a more complex and inert reaction on changes in power output. Additionally, due to the change in price structures and higher fixed and operational costs for CCS power plants, it is harder for them to be economically efficient. This study will show different options to increase the flexibility of CCS power plants and evaluate their benefits.}, language = {en} }