TY - CHAP A1 - Ahlbrink, N. A1 - Alexopoulos, Spiros A1 - Andersson, J. A1 - Belhomme, B. A1 - Teixeira Boura, Cristiano José A1 - Gall, J. A1 - Hirsch, T. T1 - viCERP - the Virtual Institute of Central Receiver Power Plant T2 - MATHMOD 2009 - 6th Vienna International Conference on Mathematical Modelling : February 11 - 13, 2009, Vienna, Austria. ARGESIM Report. No. 35 Y1 - 2009 SN - 978-3-901608-35-3 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Herrmann, Ulf A1 - Kelly, Bruce A1 - Price, Henry ED - Steinfeld, Aldo T1 - Two Tank Molten Salt Storage for Parabolic Trough Solar Power Plants T2 - Proceedings of the 11th SolarPACES International Symposium on Concentrated Solar Power and Chemical Energy Technologies : September 4 - 6, 2002, Zurich, Switzerland / Paul Scherrer Institut, PSI; ETH, Eidgenössische Technische Hochschule Zürich Y1 - 2002 SN - 3-9521409-3-7 SP - 517 EP - 524 PB - Paul Scherrer Inst. CY - Villingen ER - TY - CHAP A1 - Dersch, Jürgen A1 - Geyer, Michael A1 - Herrmann, Ulf A1 - Jones, Scott A. A1 - Kelly, Bruce A1 - Kistner, Rainer A1 - Ortmanns, Winfried A1 - Pitz-Paal, Robert A1 - Price, Henry ED - Steinfeld, Aldo T1 - Trough integration into power plants : a study on the performance and economy of integrated solar combined cycle systems T2 - Proceedings of the 11th SolarPACES International Symposium on Concentrated Solar Power and Chemical Energy Technologies : September 4 - 6, 2002, Zurich, Switzerland / Paul Scherrer Institut, PSI; ETH, Eidgenössische Technische Hochschule Zürich Y1 - 2002 SN - 3-9521409-3-7 SP - 661 EP - 671 PB - Paul Scherrer Inst. CY - Villingen ER - TY - CHAP A1 - Lüpfert, E. A1 - Herrmann, Ulf A1 - Price, Henry A1 - Zarza, E. A1 - Kistener, R. ED - Ramos, C. T1 - Towards Standard Performance Analysis for Parabolic Trough Collector Fields T2 - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12 Y1 - 2004 SN - 968-6114-18-1 PB - Instituto de Investigaciones Electricas CY - [s.l.] ER - TY - CHAP A1 - Blanke, Tobias A1 - Schmidt, Katharina S. A1 - Göttsche, Joachim A1 - Döring, Bernd A1 - Frisch, Jérôme A1 - van Treeck, Christoph ED - Weidlich, Anke ED - Neumann, Dirk ED - Gust, Gunther ED - Staudt, Philipp ED - Schäfer, Mirko T1 - Time series aggregation for energy system design: review and extension of modelling seasonal storages T2 - Energy Informatics N2 - Using optimization to design a renewable energy system has become a computationally demanding task as the high temporal fluctuations of demand and supply arise within the considered time series. The aggregation of typical operation periods has become a popular method to reduce effort. These operation periods are modelled independently and cannot interact in most cases. Consequently, seasonal storage is not reproducible. This inability can lead to a significant error, especially for energy systems with a high share of fluctuating renewable energy. The previous paper, “Time series aggregation for energy system design: Modeling seasonal storage”, has developed a seasonal storage model to address this issue. Simultaneously, the paper “Optimal design of multi-energy systems with seasonal storage” has developed a different approach. This paper aims to review these models and extend the first model. The extension is a mathematical reformulation to decrease the number of variables and constraints. Furthermore, it aims to reduce the calculation time while achieving the same results. KW - Energy system KW - Renewable energy KW - Mixed integer linear programming (MILP) KW - Typical periods KW - Time-series aggregation Y1 - 2022 U6 - http://dx.doi.org/10.1186/s42162-022-00208-5 SN - 2520-8942 N1 - Proceedings of the 11th DACH+ Conference on Energy Informatics, 15-16 September 2022, Freiburg, Germany. VL - 5 IS - 1, Article number: 17 SP - 1 EP - 14 PB - Springer Nature ER - TY - CHAP A1 - Herrmann, Ulf A1 - Worringer, S. A1 - Graeter, F. A1 - Nava, P. ED - Romero, Manuel T1 - Three Years of Operation Experience of the SKAL-ET Collector Loop at SEGS V T2 - 13th International Symposium Concentrated Solar Power and Chemical Energy Technologies, June 20 - 23, 2006, Seville, Spain Y1 - 2006 SN - 84-7834-519-1 PB - SolarPACES [u.a.] CY - [s.l.] ER - TY - CHAP A1 - Achenbach, Timm A1 - Bosch, Timo A1 - Breitbach, Gerd A1 - Göttsche, Joachim A1 - Sauerborn, Markus T1 - Theoretical and experimental investigations regarding open volumetric receivers of CRS T2 - Energy procedia : proceedings of the SolarPACES 2013 International Conference Y1 - 2013 SN - 1876-6102 VL - Vol. 49 SP - 1259 EP - 1268 ER - TY - CHAP A1 - Hirsch, Tobias A1 - Abel, Dirk A1 - Bohn, Dieter A1 - Diehl, Moritz A1 - Hoffschmidt, Bernhard A1 - Pitz-Paal, Robert T1 - The Virtual Institute for Central Receiver Power Plants - vICERP T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Meliß, Michael A1 - Späte, Frank A1 - Lange, Harald T1 - The Solar-Campus Jülich - an interdisciplinary project T2 - Building a new century. 5th Conference on Solar Architecture and Design, Bonn, 27th of May 1998. Ed. by Eurosolar e.V. Ed. by Irm Pontenagel. Y1 - 1999 SN - 3-933745-03-9 SP - 382 EP - 387 PB - Eurosolar-Verl. CY - Bonn ER - TY - CHAP A1 - Schwarzbözl, Peter A1 - Pomp, Stefan A1 - Koll, Gerrit A1 - Hennecke, Klaus A1 - Hartz, Thomas A1 - Schmitz, Mark A1 - Hoffschmidt, Bernhard T1 - The solar tower Jülich - first operational experiences and test results T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 8 EP - 9 PB - Soc. OSC CY - Saint Maur ER - TY - CHAP A1 - Koll, Gerrit A1 - Schwarzbözl, Peter A1 - Hennecke, Klaus A1 - Hartz, Thomas A1 - Schmitz, Mark A1 - Hoffschmidt, Bernhard T1 - The Solar Tower Jülich - a research and demonstration plant for central receiver systems T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Göttsche, Joachim A1 - Korn, Michael A1 - Amato, Alexandre T1 - The Passivhaus concept for the Arabian Peninsula – An energetic-economical evaluation considering the thermal comfort T2 - QScience Proceedings: Vol 2015 N2 - The Passivhaus building standard is a concept developed for the realization of energy-efficient and economical buildings with a simultaneous high utilization comfort under European climate conditions. Major elements of the Passivhaus concept are a high thermal insulation of the external walls, the use of heat and/or solar shading glazing as well as an airtight building envelope in combination with energy-efficient technical building installations and heating or cooling generators, such as an efficient energy-recovery in the building air-conditioning. The objective of this research project is the inquiry to determine the parameters or constraints under which the Passivhaus concept can be implemented under the arid climate conditions in the Arabian Peninsula to achieve an energy-efficient and economical building with high utilization comfort. In cooperation between the Qatar Green Building Council (QGBC), Barwa Real Estate (BRE) and Kahramaa the first Passivhaus was constructed in Qatar and on the Arabian Peninsula in 2013. The Solar-Institut Jülich of Aachen University of Applied Science supports the Qatar Green Building Council with a dynamic building and equipment simulation of the Passivhaus and the neighbouring reference building. This includes simulation studies with different component configurations for the building envelope and different control strategies for heating or cooling systems as well as the air conditioning of buildings to find an energetic-economical optimum. Part of these analyses is the evaluation of the energy efficiency of the used energy recovery system in the Passivhaus air-conditioning and identification of possible energy-saving effects by the use of a bypass function integrated in the heat exchanger. In this way it is expected that on an annual basis the complete electricity demand of the building can be covered by the roof-integrated PV generator. Y1 - 2015 U6 - http://dx.doi.org/10.5339/qproc.2015.qgbc.38 N1 - 10.5339/qproc.2015.qgbc.38 = abstract - Qatar Green Building Conference 2015 - The Vision, 38. ER - TY - CHAP A1 - Hahne, E. A1 - Herrmann, Ulf A1 - Rheinländer, J. ED - Girot, Michel T1 - The Effect of Tilt on Flow Pattern of Water/Steam Flow Through Heated Tubes T2 - Experimental heat transfer, fluid mechanics and thermodynamics 1997 : proceedings of the 4th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Brussels, June 2 - 6, 1997. - Vol. 2 Y1 - 1997 SN - 88-467-0014-7 SP - 925 EP - 934 PB - Ed. ETS CY - Pisa ER - TY - CHAP A1 - Meliß, Michael A1 - Späte, F. T1 - The "Summerschool Renewable Energies" at the Fachhochschule Aachen, Abteilung Jülich/Germany T2 - Harmony with nature : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 1: Energy policy, environment and education Y1 - 1993 SP - 371 EP - 376 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Schmitz, S. A1 - Sauerborn, Markus A1 - Rebholz, C. A1 - Iffland, D. A1 - Badstübner, R. A1 - Buck, R. A1 - Teufel, E. T1 - Test of a mini-mirror array for solar concentrating systems T2 - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1 Y1 - 2008 SN - 978-1-61782-228-5 SP - 1242 EP - 1250 PB - Sociedade Portuguesa De Energia Solar (SPES) CY - Lissabon ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Kroker, Jan A1 - Rusack, Markus T1 - Technical improvement of a small modular parabolic trough collector T2 - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1 Y1 - 2008 SN - 978-1-61782-228-5 SP - 1395 EP - 1402 PB - Sociedade Portuguesa De Energia Solar (SPES) CY - Lissabon ER - TY - CHAP A1 - Mahdi, Zahra A1 - Dersch, Jürgen A1 - Schmitz, Pascal A1 - Dieckmann, Simon A1 - Caminos, Ricardo Alexander Chico A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf A1 - Schwager, Christian A1 - Schmitz, Mark A1 - Gielen, Hans A1 - Gedle, Yibekal A1 - Büscher, Rauno T1 - Technical assessment of Brayton cycle heat pumps for the integration in hybrid PV-CSP power plants T2 - SOLARPACES 2020 N2 - The hybridization of Concentrated Solar Power (CSP) and Photovoltaics (PV) systems is a promising approach to reduce costs of solar power plants, while increasing dispatchability and flexibility of power generation. High temperature heat pumps (HT HP) can be utilized to boost the salt temperature in the thermal energy storage (TES) of a Parabolic Trough Collector (PTC) system from 385 °C up to 565 °C. A PV field can supply the power for the HT HP, thus effectively storing the PV power as thermal energy. Besides cost-efficiently storing energy from the PV field, the power block efficiency of the overall system is improved due to the higher steam parameters. This paper presents a technical assessment of Brayton cycle heat pumps to be integrated in hybrid PV-CSP power plants. As a first step, a theoretical analysis was carried out to find the most suitable working fluid. The analysis included the fluids Air, Argon (Ar), Nitrogen (N2) and Carbon dioxide (CO2). N2 has been chosen as the optimal working fluid for the system. After the selection of the ideal working medium, different concepts for the arrangement of a HT HP in a PV-CSP hybrid power plant were developed and simulated in EBSILON®Professional. The concepts were evaluated technically by comparing the number of components required, pressure losses and coefficient of performance (COP). KW - Solar thermal technologies KW - Hybrid energy system KW - Concentrated solar power KW - Power plants KW - Energy storage Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086269 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Marcus, W. A1 - Meliß, Michael A1 - Späte, F. T1 - Street lighting and advertising with photovoltaics T2 - Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 3: Photovoltaics Y1 - 1993 SP - 509 EP - 514 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Faber, Christian A1 - Meliß, Michael A1 - Späte, F. T1 - Solar-Institut Jülich (SIJ), Fachhochschule Aachen, Division Jülich Germany T2 - Harmony with nature : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 1: Energy policy, environment, education Y1 - 1993 SP - 349 EP - 354 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Meliß, Michael A1 - Späte, Frank T1 - Solar-Campus Jülich - an interdisciplinary project T2 - EuroSun '96 ; 10. Internationales Sonnenforum : proceedings. Bd 3 Y1 - 1996 SP - 1281 EP - 1285 PB - DGS-Sonnenenergie CY - München ER - TY - CHAP A1 - Dersch, Jürgen A1 - Geyer, Michael A1 - Herrmann, Ulf A1 - Jones, Scott A. A1 - Kelly, Bruce A1 - Kistner, Rainer A1 - Ortmanns, Winfried A1 - Pitz-Paal, Robert A1 - Price, Henry ED - Pearson, J. Boise T1 - Solar Trough Integration Into Combined Cycle Systems T2 - Solar engineering 2002 : proceedings of the International Solar Energy Conference ; presented at the 2002 International Solar Energy Conference, a part of Solar 2002 - Sunrise on the Reliable Energy Economy, June 15 - 20, 2002, Reno, Nevada Y1 - 2002 SN - 0-7918-1689-3 U6 - http://dx.doi.org/doi:10.1115/SED2002-1072 SP - 351 EP - 359 PB - ASME ER - TY - CHAP A1 - Hoffschmidt, Bernhard T1 - Solar tower power plants T2 - DME Seminar Desalination and Renewable Energies : June 19 and 20 2008, Solar Institut Jülich / Deutsche Meerwasserentsalzung e.V. Y1 - 2008 SN - 978-3-86861-017-8 PB - DME CY - Duisbrug ER - TY - CHAP A1 - Herrmann, Ulf A1 - Rheinländer, J. A1 - Lippke, F. ED - Becker, Manfred T1 - Solar Fields for Direct Steam Generation in Parabolic Trough Collectors T2 - Components, tools, facilities and measurement techniques. - (Solar thermal concentrating technologies : proceedings of the 8th international symposium, October, 6 - 11, 1996, Köln, Germany ; Vol. 2) Y1 - 1997 SN - 3-7880-7616-X SP - 815 EP - 834 PB - Müller CY - Heidelberg ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Bieger, W. A1 - Ricking, N. A1 - Bansal, Narenda K. T1 - Solar cooker with a rock bed cum oil storage T2 - 1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 3,II Y1 - 1991 SN - 0-08-041690-x SP - 3751 EP - 3756 PB - Pergamon Pr. CY - Oxford ER - TY - CHAP A1 - El Moussaoui, Noureddine A1 - Kassmi, Khalil A1 - Alexopoulos, Spiros A1 - Schwarzer, Klemens A1 - Chayeb, Hamid A1 - Bachiri, Najib T1 - Simulation studies on a new innovative design of a hybrid solar distiller MSDH alimented with a thermal and photovoltaic energy T2 - Materialstoday: Proceedings Y1 - 2021 U6 - http://dx.doi.org/10.1016/j.matpr.2021.03.115 SN - 2214-7853 ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph A1 - Schmitz, M. A1 - Schwarzbözl, P. A1 - Pomp, Stefan T1 - Simulation results for a hybridized operation of a gas turbine or a burner for a small solar tower power plant T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 82 EP - 83 PB - Soc. OSC CY - Saint Maur ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph A1 - Schwarzbözl, Peter T1 - Simulation results for a hybridization concept of a small solar tower power plant T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Achenbach, Timm A1 - Geimer, Konstantin A1 - Lynen, Arthur A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard T1 - Simulation of thermo-mechanical processes in open volumetric absorber modules T2 - SolarPaces 2012 : concentrating solar power and chemical energy systems : Sept. 11 - 14 2012, Marrakech, Marokko Y1 - 2012 SP - 1 EP - 8 ER - TY - CHAP A1 - Kronhardt, Valentina A1 - Alexopoulos, Spiros A1 - Reißel, Martin A1 - Latzke, Markus A1 - Rendon, C. A1 - Sattler, Johannes, Christoph A1 - Herrmann, Ulf T1 - Simulation of operational management for the Solar Thermal Test and Demonstration Power Plant Jülich using optimized control strategies of the storage system T2 - Energy procedia Y1 - 2015 SN - 1876-6102 SP - 1 EP - 6 ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph A1 - Sattler, Johannes, Christoph T1 - Simulation of hybrid solar tower power plants T2 - 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 Y1 - 2012 SP - 4044 EP - 4050 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Achenbach, Timm A1 - Geimer, K. A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Lynen, A. A1 - Bauer, J. T1 - Simulation and flow measurements of volumetric high temperature absorbers for solar tower power plants T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Hafner, B. A1 - Meer, A. von A1 - Krings, T. T1 - Simulation and dimensioning program for solar cookers with temporal heat storage and comparison with measurements T2 - Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Bd 5: Active systems Y1 - 1993 SP - 473 EP - 478 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Gall, J. A1 - Abel, Dirk A1 - Ahlbrink, N. A1 - Pitz-Paal, R. A1 - Andersson, J. A1 - Diehl, M. A1 - Teixeira Boura, Cristiano José A1 - Schmitz, M. A1 - Hoffschmidt, Bernhard T1 - Simulation and control of solar thermal power plants T2 - International Conference on Renewable Energies and Power Quality : ICREPQ '10 : Granada 23rd - 25th March 2010 Y1 - 2010 SP - 1 EP - 5 ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Kluczka, Sven A1 - Vaeßen, Christiane A1 - Roeb, M. A1 - Neises, M. T1 - Scenario development for efficient methanol production using CO2 and solar energy T2 - Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012 Y1 - 2012 SP - ID 99 CY - Rijeka ER - TY - CHAP A1 - Rendon, Carlos A1 - Dieckmann, Simon A1 - Weidle, Mathias A1 - Dersch, Jürgen A1 - Teixeira Boura, Cristiano José A1 - Polklas, Thomas A1 - Kuschel, Marcus A1 - Herrmann, Ulf T1 - Retrofitting of existing parabolic trough collector power plants with molten salt tower systems T2 - AIP Conference Proceedings Y1 - 2018 U6 - http://dx.doi.org/10.1063/1.5067030 VL - 2033 IS - 1 SP - 030014-1 EP - 030014-8 ER - TY - CHAP A1 - Meliß, Michael A1 - Neskakis, A. A1 - Usbeck, S. A1 - Vogelsang, E. A1 - Wagner, L. A1 - Wiediger, Jürgen T1 - PV-transmitter and receiver T2 - Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 3: Photovoltaics Y1 - 1992 SP - 375 EP - 380 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Baumann, Torsten A1 - Teixeira Boura, Cristiano José A1 - Eckstein, Julian A1 - Dabrowski, Jan A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Schmitz, Stefan A1 - Zunft, Stefan T1 - Properties of bulk materials for high-temperature air-sand heat exchangers T2 - 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 2 Y1 - 2012 SN - 978-1-61839-364-7 SP - 1270 EP - 1278 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Herrmann, Ulf A1 - Graeter, F. A1 - Nava, P. ED - Ramos, C. T1 - Performance of the SKAL-ET Collector Loop at KJC Operating Company T2 - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12 Y1 - 2004 SN - 968-6114-18-1 PB - Instituto de Investigaciones Electricas CY - [s.l.] ER - TY - CHAP A1 - Warerkar, S. A1 - Schmitz, S. A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Tamme, R. T1 - Performance analysis of an air-sand heat exchanger prototype for high-temperature storage T2 - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1 Y1 - 2008 SN - 978-1-61782-228-5 SP - 2215 EP - 2222 PB - Sociedade Portuguesa De Energia Solar (SPES) CY - Lissabon ER - TY - CHAP A1 - Gall, J. A1 - Abel, D. A1 - Ahlbrink, N. A1 - Andersson, J. A1 - Diehl, M. A1 - Pitz-Paal, R. A1 - Schmitz, M. A1 - Teixeira Boura, Cristiano José T1 - Optimized control of hot-gas cycle for solar thermal power plants T2 - Proceedings of the 7th International Modelica Conference : Como, Italy, 20-22 September 2009 / Francesco Casella, ed. Y1 - 2009 SN - 978-91-7393-513-5 SP - 490 EP - 495 PB - The Modelica Association ER - TY - CHAP A1 - Kelly, Bruce A1 - Herrmann, Ulf A1 - Hale, M.-J. T1 - Optimization Studies for Integrated Solar Combined Cycle Systems T2 - Solar engineering 2001 : proceedings of the International Solar Energy Conference ; presented at the 2001 International Solar Energy Conference, a part of Forum 2001 - Solar energy: the power to choose, April 21 - 25, 2001, Washington, D.C. Y1 - 2001 SN - 0-7918-1670-2 N1 - International Solar Energy Conference SP - 393 EP - 398 PB - ASME CY - New York, NY ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Breitbach, Gerd A1 - Hoffschmidt, Bernhard T1 - Optimization of the channel form geometry of porous ReSiC ceramic membrane modules T2 - Proceedings / International Conference & Exhibition for Filtration and Separation Technology, FILTECH 2009 : October 13 - 15, 2009, Wiesbaden, Germany. Vol. 2 Y1 - 2009 SN - 978-3-941655-36-2 SP - 686 EP - 693 PB - Filtech Exhibitions Germany CY - Meerbusch ER - TY - CHAP A1 - Hoffschmidt, Bernhard A1 - Telle, R. A1 - Sauerborn, Markus A1 - Wagner, M. T1 - Optical measurement system for high temperature absorbers T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Mohan, Nijanthan A1 - Groß, Rolf Fritz A1 - Menzel, Karsten A1 - Theis, Fabian T1 - Opportunities and Challenges in the Implementation of Building Information Modeling for Prefabrication of Heating, Ventilation and Air Conditioning Systems in Small and Medium-Sized Contracting Companies in Germany – A Case Study T2 - WIT Transactions on The Built Environment, Vol. 205 N2 - FEven though BIM (Building Information Modelling) is successfully implemented in most of the world, it is still in the early stages in Germany, since the stakeholders are sceptical of its reliability and efficiency. The purpose of this paper is to analyse the opportunities and obstacles to implementing BIM for prefabrication. Among all other advantages of BIM, prefabrication is chosen for this paper because it plays a vital role in creating an impact on the time and cost factors of a construction project. The project stakeholders and participants can explicitly observe the positive impact of prefabrication, which enables the breakthrough of the scepticism factor among the small-scale construction companies. The analysis consists of the development of a process workflow for implementing prefabrication in building construction followed by a practical approach, which was executed with two case studies. It was planned in such a way that, the first case study gives a first-hand experience for the workers at the site on the BIM model so that they can make much use of the created BIM model, which is a better representation compared to the traditional 2D plan. The main aim of the first case study is to create a belief in the implementation of BIM Models, which was succeeded by the execution of offshore prefabrication in the second case study. Based on the case studies, the time analysis was made and it is inferred that the implementation of BIM for prefabrication can reduce construction time, ensures minimal wastes, better accuracy, less problem-solving at the construction site. It was observed that this process requires more planning time, better communication between different disciplines, which was the major obstacle for successful implementation. This paper was carried out from the perspective of small and medium-sized mechanical contracting companies for the private building sector in Germany. KW - building information modelling KW - HVAC KW - prefabrication KW - construction KW - small and medium scaled companies Y1 - 2021 U6 - http://dx.doi.org/10.2495/BIM210101 SN - 1743-3509 N1 - 4th International Conference on Building Information Modelling (BIM) in Design, Construction and Operations, 1–3 September 2021. Santiago de Compostela, Spain SP - 117 EP - 126 PB - WIT Press CY - Southampton ER - TY - CHAP A1 - Sattler, Johannes, Christoph A1 - Caminos, Ricardo Alexander Chico A1 - Ürlings, Nicolas A1 - Dutta, Siddharth A1 - Ruiz, Victor A1 - Kalogirou, Soteris A1 - Ktistis, Panayiotis A1 - Agathokleous, Rafaela A1 - Jung, Christian A1 - Alexopoulos, Spiros A1 - Atti, Vikrama Nagababu A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Operational experience and behaviour of a parabolic trough collector system with concrete thermal energy storage for process steam generation in Cyprus T2 - AIP Conference Proceedings Y1 - 2020 U6 - http://dx.doi.org/10.1063/5.0029278 IS - 2303 SP - 140004-1 EP - 140004-10 ER - TY - CHAP A1 - Duran Paredes, Ludwin A1 - Mottaghy, Darius A1 - Herrmann, Ulf A1 - Groß, Rolf Fritz T1 - Online ground temperature and soil moisture monitoring of a shallow geothermal system with non-conventional components T2 - EGU General Assembly 2020 N2 - We present first results from a newly developed monitoring station for a closed loop geothermal heat pump test installation at our campus, consisting of helix coils and plate heat exchangers, as well as an ice-store system. There are more than 40 temperature sensors and several soil moisture content sensors distributed around the system, allowing a detailed monitoring under different operating conditions.In the view of the modern development of renewable energies along with the newly concepts known as Internet of Things and Industry 4.0 (high-tech strategy from the German government), we created a user-friendly web application, which will connect the things (sensors) with the open network (www). Besides other advantages, this allows a continuous remote monitoring of the data from the numerous sensors at an arbitrary sampling rate.Based on the recorded data, we will also present first results from numerical simulations, taking into account all relevant heat transport processes.The aim is to improve the understanding of these processes and their influence on the thermal behavior of shallow geothermal systems in the unsaturated zone. This will in turn facilitate the prediction of the performance of these systems and therefore yield an improvement in their dimensioning when designing a specific shallow geothermal installation. Y1 - 2020 N1 - Online 4–8 May 2020 [Session ERE2.8] EGU2020-19052 ER - TY - CHAP A1 - Mahdi, Zahra A1 - Rendón, Carlos A1 - Schwager, Christian A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Novel concept for indirect solar-heated methane reforming T2 - AIP Conference Proceedings Y1 - 2019 U6 - http://dx.doi.org/10.1063/1.5117694 SN - 0094-243X VL - 2126 SP - 180014-1 EP - 180014-7 PB - AIP Publishing CY - Melville, NY ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Vieira, Maria Eugenia A1 - Müller, Christoph A1 - Lehmann, Harry A1 - Coutinho, Lecimara T1 - Modular solar thermal desalination system with flat plate collector T2 - RIO 3 - World Climate & Energy Event : proceedings of the international conference held in Rio de Janeiro, Brazil, 1 -5 december 2003 / chief-ed.: Stefan Krauter ... Y1 - 2003 SN - 85-902710-2-1 SP - 281 EP - 286 PB - Krauter CY - Rio de Janeiro ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Rau, Christoph A1 - Hoffschmidt, Bernhard A1 - Breitbach, Gerd A1 - Latzke, Markus T1 - Modelling and validation of a transient heat recovery steam generator of the solar tower power plant Juelich T2 - Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012 Y1 - 2012 SP - ID 97 CY - Rijeka ER - TY - CHAP A1 - Zahra, Mahdi A1 - Phani Srujan, Merige A1 - Caminos, Ricardo Alexander Chico A1 - Schmitz, Pascal A1 - Herrmann, Ulf A1 - Teixeira Boura, Cristiano José A1 - Schmitz, Mark A1 - Gielen, Hans A1 - Gedle, Yibekal A1 - Dersch, Jürgen T1 - Modeling the thermal behavior of solar salt in electrical resistance heaters for the application in PV-CSP hybrid power plants T2 - SOLARPACES 2020 N2 - Concentrated Solar Power (CSP) systems are able to store energy cost-effectively in their integrated thermal energy storage (TES). By intelligently combining Photovoltaics (PV) systems with CSP, a further cost reduction of solar power plants is expected, as well as an increase in dispatchability and flexibility of power generation. PV-powered Resistance Heaters (RH) can be deployed to raise the temperature of the molten salt hot storage from 385 °C up to 565 °C in a Parabolic Trough Collector (PTC) plant. To avoid freezing and decomposition of molten salt, the temperature distribution in the electrical resistance heater is investigated in the present study. For this purpose, a RH has been modeled and CFD simulations have been performed. The simulation results show that the hottest regions occur on the electric rod surface behind the last baffle. A technical optimization was performed by adjusting three parameters: Shell-baffle clearance, electric rod-baffle clearance and number of baffles. After the technical optimization was carried out, the temperature difference between the maximum temperature and the average outlet temperature of the salt is within the acceptable limits, thus critical salt decomposition has been avoided. Additionally, the CFD simulations results were analyzed and compared with results obtained with a one-dimensional model in Modelica. KW - Solar thermal technologies KW - Hybrid energy system KW - Concentrated solar power KW - Energy storage KW - Photovoltaics Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086268 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Rendon, Carlos A1 - Schwager, Christian A1 - Ghiasi, Mona A1 - Schmitz, Pascal A1 - Bohang, Fakhri A1 - Caminos, Ricardo Alexander Chico A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Modeling and upscaling of a pilot bayonettube reactor for indirect solar mixed methane reforming T2 - AIP Conference Proceedings Y1 - 2020 U6 - http://dx.doi.org/10.1063/5.0029974 IS - 2303 SP - 170012-1 EP - 170012-9 ER - TY - CHAP A1 - Schwager, Christian A1 - Angele, Florian A1 - Schwarzbözl, Peter A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Model predictive assistance for operational decision making in molten salt receiver systems T2 - SolarPACES: Solar Power & Chemical Energy Systems N2 - Despite the challenges of pioneering molten salt towers (MST), it remains the leading technology in central receiver power plants today, thanks to cost effective storage integration and high cost reduction potential. The limited controllability in volatile solar conditions can cause significant losses, which are difficult to estimate without comprehensive modeling [1]. This paper presents a Methodology to generate predictions of the dynamic behavior of the receiver system as part of an operating assistance system (OAS). Based on this, it delivers proposals if and when to drain and refill the receiver during a cloudy period in order maximize the net yield and quantifies the amount of net electricity gained by this. After prior analysis with a detailed dynamic two-phase model of the entire receiver system, two different reduced modeling approaches where developed and implemented in the OAS. A tailored decision algorithm utilizes both models to deliver the desired predictions efficiently and with appropriate accuracy. KW - Power plants KW - Associated liquids KW - Decision theory KW - Electrochemistry Y1 - 2023 SN - 978-0-7354-4623-6 U6 - http://dx.doi.org/10.1063/5.0151514 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 27th International Conference on Concentrating Solar Power and Chemical Energy Systems 27 September–1 October 2021 Online IS - 2815 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Schulze-Buxloh, Lina A1 - Groß, Rolf Fritz T1 - Miniature urban farming plant: a complex educational “Toy” for engineering students T2 - The Future of Education 11th Edition 2021 N2 - Urban farming is an innovative and sustainable way of food production and is becoming more and more important in smart city and quarter concepts. It also enables the production of certain foods in places where they usually dare not produced, such as production of fish or shrimps in large cities far away from the coast. Unfortunately, it is not always possible to show students such concepts and systems in real life as part of courses: visits of such industry plants are sometimes not possible because of distance or are permitted by the operator for hygienic reasons. In order to give the students the opportunity of getting into contact with such an urban farming system and its complex operation, an industrial urban farming plant was set up on a significantly smaller scale. Therefore, all needed technical components like water aeriation, biological and mechanical filtration or water circulation have been replaced either by aquarium components or by self-designed parts also using a 3D-printer. Students from different courses like mechanical engineering, smart building engineering, biology, electrical engineering, automation technology and civil engineering were involved in this project. This “miniature industrial plant” was also able to start operation and has now been running for two years successfully. Due to Corona pandemic, home office and remote online lectures, the automation of this miniature plant should be brought to a higher level in future for providing a good control over the system and water quality remotely. The aim of giving the student a chance to get to know the operation of an urban farming plant was very well achieved and the students had lots of fun in “playing” and learning with it in a realistic way. KW - urban farming KW - food production KW - smart engineering KW - 3D printing KW - sustainability Y1 - 2021 N1 - FOE 2021 : The Future of Education International Conference – Fully Virtual Edition; 01.07.2021-02.07.2021; Florence, Italy ER - TY - CHAP A1 - Beckmöller, S. A1 - Wolters, J. A1 - Breitbach, Gerd A1 - Penkalla, H. J. A1 - Schubert, F. T1 - Microstructural dependent constitutive equation for inelastic analysis of internally cooled IN 738 LC turbine blades T2 - Materials for advanced power engineering 1994 : proceedings of a conference held in Liege, Belgium, 3 - 6 Oct. 1994 Y1 - 1995 SN - 0792330749 SP - 829 EP - 839 PB - Kluwer CY - Dordrecht ER - TY - CHAP A1 - Anthrakidis, Anette A1 - Rusack, Markus A1 - Schwarzer, Klemens T1 - Low effort measurement method of PTC-efficiency T2 - SolarPACES 2010 : the CSP conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 48 EP - 49 PB - Soc. OSC CY - Saint Maur ER - TY - CHAP A1 - Sauerborn, Markus T1 - Investigations to the influence of clouds and aerosols to the haze of the sunshape T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Niederwestberg, Stefan A1 - Schneider, Falko A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Introduction to a direct irradiated transparent tube particle receiver T2 - SOLARPACES 2020 N2 - New materials often lead to innovations and advantages in technical applications. This also applies to the particle receiver proposed in this work that deploys high-temperature and scratch resistant transparent ceramics. With this receiver design, particles are heated through direct-contact concentrated solar irradiance while flowing downwards through tubular transparent ceramics from top to bottom. In this paper, the developed particle receiver as well as advantages and disadvantages are described. Investigations on the particle heat-up characteristics from solar irradiance were carried out with DEM simulations which indicate that particle temperatures can reach up to 1200 K. Additionally, a simulation model was set up for investigating the dynamic behavior. A test receiver at laboratory scale has been designed and is currently being built. In upcoming tests, the receiver test rig will be used to validate the simulation results. The design and the measurement equipment is described in this work. KW - Solar irradiance KW - Ceramics Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086735 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Schulze-Buxloh, Lina A1 - Groß, Rolf Fritz T1 - Interdisciplinary Course Smart Building Engineering: A new approach of teaching freshmen in remote teamwork project under pandemic restrictions T2 - New Perspectives in Science Education -International Conference (virtual event, 18-19 March 2021) N2 - In the context of the Corona pandemic and its impact on teaching like digital lectures and exercises a new concept especially for freshmen in demanding courses of Smart Building Engineering became necessary. As there were hardly any face-to-face events at the university, the new teaching concept should enable a good start into engineering studies under pandemic conditions anyway and should also replace the written exam at the end. The students should become active themselves in small teams instead of listening passively to a lecture broadcast online with almost no personal contact. For this purpose, a role play was developed in which the freshmen had to work out a complete solution to the realistic problem of designing, construction planning and implementing a small guesthouse. Each student of the team had to take a certain role like architect, site manager, BIM-manager, electrician and the technitian for HVAC installations. Technical specifications must be complied with, as well as documentation, time planning and cost estimate. The final project folder had to contain technical documents like circuit diagrams for electrical components, circuit diagrams for water and heating, design calculations and components lists. On the other hand construction schedule, construction implementation plan, documentation of the construction progress and minutes of meetings between the various trades had to be submitted as well. In addition to the project folder, a model of the construction project must also be created either as a handmade model or as a digital 3D-model using Computer-aided design (CAD) software. The first steps in the field of Building information modelling (BIM) had also been taken by creating a digital model of the building showing the current planning status in real time as a digital twin. This project turned out to be an excellent training of important student competencies like teamwork, communication skills, and self -organisation and also increased motivation to work on complex technical questions. The aim of giving the student a first impression on the challenges and solutions in building projects with many different technical trades and their points of view was very well achieved and should be continued in the future. KW - Freshmen KW - roleplay KW - Smart Building Engineering KW - BIM KW - remote teamwork Y1 - 2021 N1 - New Perspectives in Science Education - 10th Edition 18-19 March 2021 Fully Virtual Conference PB - Filodiritto CY - Bologna ER - TY - CHAP A1 - Fricke, Barbara A1 - Ziolko, C. A1 - Anthrakidis, Anette A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Dillig, M. A1 - Giese, F. T1 - InnoSol - life cycle analysis of solar power tower plants T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Fricke, Barbara A1 - Ziolko, C. A1 - Anthrakidis, Anette A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Giese, F. A1 - Dillig, M. T1 - InnoSol - environmental aspects of the open volumetric receiver technology T2 - 30th ISES Biennial Solar World Congress 2011 : : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 Y1 - 2012 SP - 3895 EP - 3900 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Sauerborn, Markus A1 - Arshadi, S. A1 - Rohrmoser, R. T1 - Influence of clouds and aerosols to the haze of the sunshape T2 - 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 Y1 - 2012 SP - 3887 EP - 3894 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Schwager, Christian A1 - Teixeira Boura, Cristiano José A1 - Flesch, Robert A1 - Alexopoulos, Spiros A1 - Herrmann, Ulf T1 - Improved efficiency prediction of a molten salt receiver based on dynamic cloud passage simulation T2 - AIP Conference Proceedings Y1 - 2019 SN - 978-0-7354-1866-0 U6 - http://dx.doi.org/10.1063/1.5117566 VL - 2126 IS - 1 SP - 030054-1 EP - 030054-8 ER - TY - CHAP A1 - Schwager, Christian A1 - Angele, Florian A1 - Nouri, Bijan A1 - Schwarzbözl, Peter A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Impact of DNI forecast quality on performance prediction for a commercial scale solar tower: Application of nowcasting DNI maps to dynamic solar tower simulation T2 - SolarPACES conference proceedings N2 - Concerning current efforts to improve operational efficiency and to lower overall costs of concentrating solar power (CSP) plants with prediction-based algorithms, this study investigates the quality and uncertainty of nowcasting data regarding the implications for process predictions. DNI (direct normal irradiation) maps from an all-sky imager-based nowcasting system are applied to a dynamic prediction model coupled with ray tracing. The results underline the need for high-resolution DNI maps in order to predict net yield and receiver outlet temperature realistically. Furthermore, based on a statistical uncertainty analysis, a correlation is developed, which allows for predicting the uncertainty of the net power prediction based on the corresponding DNI forecast uncertainty. However, the study reveals significant prediction errors and the demand for further improvement in the accuracy at which local shadings are forecasted. KW - Process prediction KW - DNI forecasting KW - Nowcasting KW - Uncertainty analysis KW - Molten salt receiver system, Y1 - 2024 U6 - http://dx.doi.org/10.52825/solarpaces.v1i.675 SN - 2751-9899 (online) N1 - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - Vol. 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Sauerborn, Markus A1 - Hoffschmidt, Bernhard A1 - Telle, R. A1 - Wagner, M. T1 - Heatable optical analyse system for high temperature absorbers T2 - 30th ISES Biennial Solar World Congress 2011 : : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 Y1 - 2012 SN - 978-1-61839-364-7 SP - 3852 EP - 3860 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Schulte, Jonas A1 - Schwager, Christian A1 - Noureldin, Kareem A1 - May, Martin A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Gradient controlled startup procedure of a molten-salt power-to-heat energy storage plant based on dynamic process simulation T2 - SolarPACES: Solar Power & Chemical Energy Systems N2 - The integration of high temperature thermal energy storages into existing conventional power plants can help to reduce the CO2 emissions of those plants and lead to lower capital expenditures for building energy storage systems, due to the use of synergy effects [1]. One possibility to implement that, is a molten salt storage system with a powerful power-to-heat unit. This paper presents two possible control concepts for the startup of the charging system of such a facility. The procedures are implemented in a detailed dynamic process model. The performance and safety regarding the film temperatures at heat transmitting surfaces are investigated in the process simulations. To improve the accuracy in predicting the film temperatures, CFD simulations of the electrical heater are carried out and the results are merged with the dynamic model. The results show that both investigated control concepts are safe regarding the temperature limits. The gradient controlled startup performed better than the temperature-controlled startup. Nevertheless, there are several uncertainties that need to be investigated further. KW - Power plants KW - Energy storage KW - Associated liquids Y1 - 2023 SN - 978-0-7354-4623-6 U6 - http://dx.doi.org/10.1063/5.0148741 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 27th International Conference on Concentrating Solar Power and Chemical Energy Systems 27 September–1 October 2021 Online IS - 2815 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Fend, Thomas A1 - Hoffschmidt, Bernhard A1 - Reutter, Oliver A1 - Sauerhering, Jörg A1 - Pitz-Paal, Robert T1 - Gas flow in hot porous materials: the solar air receiver and spin-off applications T2 - Proceedings of the 4th Nanochannels, Microchannels and Minichannels - 2006 : presented at 4th Nanochannels, Microchannels and Minichannels, June 19 - 21, 2006, Limerick, Ireland Y1 - 2006 SN - 0-7918-4760-8 SP - 507 EP - 514 PB - ASME CY - New York, NY ER - TY - CHAP A1 - Breitbach, Gerd A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard T1 - Fluid flow in porous ceramic multichannel crossflower filter modules Y1 - 2007 PB - COMSOL Inc. CY - Burlington, Mass. ER - TY - CHAP A1 - May, Martin A1 - Breitbach, Gerd A1 - Alexopoulos, Spiros A1 - Latzke, Markus A1 - Bäumer, Klaus A1 - Uhlig, Ralf A1 - Söhn, Matthias A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Experimental facility for investigations of wire mesh absorbers for pressurized gases T2 - AIP Conference Proceedings Y1 - 2019 U6 - http://dx.doi.org/10.1063/1.5117547 SN - 0094243X VL - 2126 SP - 030035-1 EP - 030035-9 ER - TY - CHAP A1 - Krüger, Dirk A1 - Anthrakidis, Anette A1 - Fischer, Stephan A1 - Lokurlu, Ahmet A1 - Walder, Markus A1 - Croy, Reiner A1 - Quaschning, Volker T1 - Experiences with solar steam supply for an industrial steam network in the P3 Project T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Sauerborn, Markus A1 - Klimek, J. A1 - Hoffschmidt, Bernhard A1 - Essen, H. A1 - Sieger, S. A1 - Biegel, G. A1 - Göttsche, Joachim A1 - Hilger, Patrick T1 - Eurosun 2012 : radar technology for heliostat posititon control T2 - Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012 Y1 - 2012 SP - ID 80 CY - Rijeka ER - TY - CHAP A1 - Lahrs, Lennart A1 - Krisam, Pierre A1 - Herrmann, Ulf T1 - Envisioning a collaborative energy system planning platform for the energy transition at the district level T2 - The 36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems N2 - Residential and commercial buildings account for more than one-third of global energy-related greenhouse gas emissions. Integrated multi-energy systems at the district level are a promising way to reduce greenhouse gas emissions by exploiting economies of scale and synergies between energy sources. Planning district energy systems comes with many challenges in an ever-changing environment. Computational modelling established itself as the state-of-the-art method for district energy system planning. Unfortunately, it is still cumbersome to combine standalone models to generate insights that surpass their original purpose. Ideally, planning processes could be solved by using modular tools that easily incorporate the variety of competing and complementing computational models. Our contribution is a vision for a collaborative development and application platform for multi-energy system planning tools at the district level. We present challenges of district energy system planning identified in the literature and evaluate whether this platform can help to overcome these challenges. Further, we propose a toolkit that represents the core technical elements of the platform. Lastly, we discuss community management and its relevance for the success of projects with collaboration and knowledge sharing at their core. KW - Energy system planning KW - District energy planning platform KW - District data model KW - Renewable energy integration Y1 - 2023 U6 - http://dx.doi.org/10.52202/069564-0284 N1 - 25-30 JUNE, 2023, Las Palmas de Gran Canaria, Spain SP - 3163 EP - 3170 PB - Procedings of ECOS 2023 ER - TY - CHAP A1 - Meliß, Michael A1 - Neskakis, A. A1 - Usbeck, S. A1 - Wagner, L. A1 - Wiediger, Jürgen T1 - Energy supply by coupled solar systems for decentralized application T2 - Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 8: Biomass, agriculture, wind Y1 - 1993 SP - 343 EP - 348 PB - Hungarian Energy Society CY - Budapest ER - TY - CHAP A1 - Göttsche, Joachim A1 - Schwarzer, Klemens A1 - Röther, Sascha A1 - Jellinghaus, Sabine A1 - Helten, G. A1 - Wittmann, R. T1 - Efficient daylighting, heating and shading with rooflight heliostats T2 - Renewables in a changing climate : from Nano to Urban Scale : CISBAT 2009 : 2-3 September 2009, EPFL, Lausanne, Switzerland : proceedings Y1 - 2009 SP - 243 EP - 246 PB - Ecole Polytechnique Fédérale de Lausanne CY - Lausanne ER - TY - CHAP A1 - Fricke, Barbara A1 - Hoffschmidt, Bernhard T1 - Ecobalance of a solar thermal tower power plant with volumetric receiver T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 87 EP - 88 PB - Soc. OSC CY - Saint Maur ER - TY - CHAP A1 - Hirsch, Tobias A1 - Ahlbrink, Nils A1 - Pitz-Paal, Robert A1 - Teixeira Boura, Cristiano José A1 - Hoffschmidt, Bernhard A1 - Gall, Jan A1 - Abel, Dirk A1 - Nolte, Vera A1 - Wirsum, Manfred A1 - Andersson, Joel A1 - Diehl, Moritz T1 - Dynamic simulation of a solar tower system with open volumetric receiver - a review on the ViCERP project T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Sattler, Johannes, Christoph A1 - Alexopoulos, Spiros A1 - Caminos, Ricardo Alexander Chico A1 - Mitchell, John C. A1 - Ruiz, Victor C. A1 - Kalogirou, Soteris A1 - Ktistis, Panayiotis K. A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Dynamic simulation model of a parabolic trough collector system with concrete thermal energy storage for process steam generation T2 - AIP Conference Proceedings Y1 - 2019 U6 - http://dx.doi.org/10.1063/1.5117663 SN - 0094243X VL - 2126 SP - 150007-1 EP - 150007-8 ER - TY - CHAP A1 - Janotte, N. A1 - Feckler, G. A1 - Kötter, Jens A1 - Decker, Stefan A1 - Herrmann, Ulf A1 - Schmitz, Mark A1 - Lüpfert, E. T1 - Dynamic performance evaluation of the HelioTrough® collector demonstration loop : towards a new benchmark in parabolic trough qualification T2 - SolarPACES International Conference 2013, Las Vegas, Nevada, USA, 17 - 20 September 2013 : [proceedings]. - Pt. 1. - (Energy procedia ; 49) Y1 - 2014 SN - 978-1-63266-904-9 U6 - http://dx.doi.org/10.1016/j.egypro.2014.03.012 SN - 1876-6102 N1 - Nebent.: Power and Chemical Energy Systems concentrating solar power SP - 109 EP - 117 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Sattler, Johannes Christoph A1 - Atti, Vikrama A1 - Alexopoulos, Spiros A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf A1 - Dutta, Siddharth A1 - Kioutsioukis, Ioannis T1 - DNI forecast tool for the smart operation of a parabolic trough collector system with concrete thermal energy storage: Theory, results and outlook T2 - SolarPACES conference proceedings N2 - This work presents a basic forecast tool for predicting direct normal irradiance (DNI) in hourly resolution, which the Solar-Institut Jülich (SIJ) is developing within a research project. The DNI forecast data shall be used for a parabolic trough collector (PTC) system with a concrete thermal energy storage (C-TES) located at the company KEAN Soft Drinks Ltd in Limassol, Cyprus. On a daily basis, 24-hour DNI prediction data in hourly resolution shall be automatically produced using free or very low-cost weather forecast data as input. The purpose of the DNI forecast tool is to automatically transfer the DNI forecast data on a daily basis to a main control unit (MCU). The MCU automatically makes a smart decision on the operation mode of the PTC system such as steam production mode and/or C-TES charging mode. The DNI forecast tool was evaluated using historical data of measured DNI from an on-site weather station, which was compared to the DNI forecast data. The DNI forecast tool was tested using data from 56 days between January and March 2022, which included days with a strong variation in DNI due to cloud passages. For the evaluation of the DNI forecast reliability, three categories were created and the forecast data was sorted accordingly. The result was that the DNI forecast tool has a reliability of 71.4 % based on the tested days. The result fulfils SIJ’s aim to achieve a reliability of around 70 %, but SIJ aims to still improve the DNI forecast quality. KW - Direct normal irradiance forecast KW - DNI forecast KW - Parabolic trough collector KW - PTC KW - Thermal Energy Storage Y1 - 2024 U6 - http://dx.doi.org/10.52825/solarpaces.v1i.731 SN - 2751-9899 (online) N1 - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - VOL. 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Schulze-Buxloh, Lina A1 - Groß, Rolf Fritz A1 - Ulbrich, Michelle T1 - Digital planning using building information modelling and virtual reality: new approach for students’ remote practical training under lockdown conditions in the course of smart building engineering T2 - Proceedings of International Conference on Education in Mathematics, Science and Technology 2021 N2 - The worldwide Corona pandemic has severely restricted student projects in the higher semesters of engineering courses. In order not to delay the graduation, a new concept had to be developed for projects under lockdown conditions. Therefore, unused rooms at the university should be digitally recorded in order to develop a new usage concept as laboratory rooms. An inventory of the actual state of the rooms was done first by taking photos and listing up all flaws and peculiarities. After that, a digital site measuring was done with a 360° laser scanner and these recorded scans were linked to a coherent point cloud and transferred to a software for planning technical building services and supporting Building Information Modelling (BIM). In order to better illustrate the difference between the actual and target state, two virtual reality models were created for realistic demonstration. During the project, the students had to go through the entire digital planning phases. Technical specifications had to be complied with, as well as documentation, time planning and cost estimate. This project turned out to be an excellent alternative to on-site practical training under lockdown conditions and increased the students’ motivation to deal with complex technical questions. KW - smart building engineering KW - building information modelling KW - virtual reality KW - lockdown conditions KW - emote practical training Y1 - 2021 SN - 978-1-952092-17-6 N1 - April 1-4, 2021 in Antalya, Turkey. SP - 118 EP - 123 PB - ISTES Organization CY - San Antonio, TX ER - TY - CHAP A1 - Neumann, Hannah A1 - Adam, Mario A1 - Backes, Klaus A1 - Börner, Martin A1 - Clees, Tanja A1 - Doetsch, Christian A1 - Glaeser, Susanne A1 - Herrmann, Ulf A1 - May, Johanna A1 - Rosenthal, Florian A1 - Sauer, Dirk Uwe A1 - Stadler, Ingo T1 - Development of open educational resources for renewable energy and the energy transition process T2 - ISES SWC 2021 N2 - The dissemination of knowledge about renewable energies is understood as a social task with the highest topicality. The transfer of teaching content on renewable energies into digital open educational resources offers the opportunity to significantly accelerate the implementation of the energy transition. Thus, in the here presented project six German universities create open educational resources for the energy transition. These materials are available to the public on the internet under a free license. So far there has been no publicly accessible, editable media that cover entire learning units about renewable energies extensively and in high technical quality. Thus, in this project, the content that remains up-to-date for a longer period is appropriately prepared in terms of media didactics. The materials enable lecturers to provide students with in-depth training about technologies for the energy transition. In a particular way, the created material is also suitable for making the general public knowledgeable about the energy transition with scientifically based material. KW - energy transition KW - renewable energies KW - open educational resources KW - dissemination KW - digitalization Y1 - 2021 U6 - http://dx.doi.org/10.18086/swc.2021.47.03 N1 - ISES Solar World Congress, virtual conference 25-29 October 2021 PB - International Solar Energy Society CY - Freiburg ER - TY - CHAP A1 - Sattler, Johannes Christoph A1 - Schneider, Iesse Peer A1 - Angele, Florian A1 - Atti, Vikrama A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Development of heliostat field calibration methods: Theory and experimental test results T2 - SolarPACES conference proceedings N2 - In this work, three patent pending calibration methods for heliostat fields of central receiver systems (CRS) developed by the Solar-Institut Jülich (SIJ) of the FH Aachen University of Applied Sciences are presented. The calibration methods can either operate in a combined mode or in stand-alone mode. The first calibration method, method A, foresees that a camera matrix is placed into the receiver plane where it is subjected to concentrated solar irradiance during a measurement process. The second calibration method, method B, uses an unmanned aerial vehicle (UAV) such as a quadrocopter to automatically fly into the reflected solar irradiance cross-section of one or more heliostats (two variants of method B were tested). The third calibration method, method C, foresees a stereo central camera or multiple stereo cameras installed e.g. on the solar tower whereby the orientations of the heliostats are calculated from the location detection of spherical red markers attached to the heliostats. The most accurate method is method A which has a mean accuracy of 0.17 mrad. The mean accuracy of method B variant 1 is 1.36 mrad and of variant 2 is 1.73 mrad. Method C has a mean accuracy of 15.07 mrad. For method B there is great potential regarding improving the measurement accuracy. For method C the collected data was not sufficient for determining whether or not there is potential for improving the accuracy. KW - Heliostat Field Calibration KW - Unmanned aerial vehicle KW - UAV KW - Quadrocopter KW - Camera system Y1 - 2024 U6 - http://dx.doi.org/10.52825/solarpaces.v1i.678 SN - 2751-9899 (online) N1 - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - Vol. 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Teixeira Boura, Cristiano José A1 - Niederwestberg, Stefan A1 - McLeod, Jacqueline A1 - Herrmann, Ulf A1 - Hoffschmidt, Bernhard T1 - Development of heat exchanger for high temperature energy storage with bulk materials T2 - AIP Conference Proceedings Y1 - 2016 U6 - http://dx.doi.org/10.1063/1.4949106 VL - 1734 IS - 1 SP - 050008-1 EP - 050008-7 ER - TY - CHAP A1 - Achenbach, Timm A1 - Göttsche, Joachim A1 - Kaufhold, O. A1 - Hoffschmidt, Bernhard T1 - Development of an edge module for open volumetric receiver for the use of the radiation at the receiver boundary region T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Hoffschmidt, Bernhard A1 - Schwarzer, Klemens A1 - Späte, Frank A1 - Kötter, Jens A1 - Ebert, Miriam A1 - Sierck, Olaf T1 - Development of a small modular parabolic trough collector T2 - 13th International Symposium Concentrated Solar Power and Chemical Energy Technologies : SolarPaces : June 20 - 23, 2006, Seville, Spain Y1 - 2006 SN - 8478345191 PB - SolarPaces CY - [o.O.] ER - TY - CHAP A1 - Caminos, Ricardo Alexander Chico A1 - Schmitz, Pascal A1 - Atti, Vikrama A1 - Mahdi, Zahra A1 - Teixeira Boura, Cristiano José A1 - Sattler, Johannes Christoph A1 - Herrmann, Ulf A1 - Hilger, Patrick A1 - Dieckmann, Simon T1 - Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method T2 - SOLARPACES 2020 N2 - The Solar-Institut Jülich (SIJ) and the companies Hilger GmbH and Heliokon GmbH from Germany have developed a small-scale cost-effective heliostat, called “micro heliostat”. Micro heliostats can be deployed in small-scale concentrated solar power (CSP) plants to concentrate the sun's radiation for electricity generation, space or domestic water heating or industrial process heat. In contrast to conventional heliostats, the special feature of a micro heliostat is that it consists of dozens of parallel-moving, interconnected, rotatable mirror facets. The mirror facets array is fixed inside a box-shaped module and is protected from weathering and wind forces by a transparent glass cover. The choice of the building materials for the box, tracking mechanism and mirrors is largely dependent on the selected production process and the intended application of the micro heliostat. Special attention was paid to the material of the tracking mechanism as this has a direct influence on the accuracy of the micro heliostat. The choice of materials for the mirror support structure and the tracking mechanism is made in favor of plastic molded parts. A qualification assessment method has been developed by the SIJ in which a 3D laser scanner is used in combination with a coordinate measuring machine (CMM). For the validation of this assessment method, a single mirror facet was scanned and the slope deviation was computed. KW - Concentrated solar power KW - Electricity generation KW - Measuring instruments KW - Heliostats KW - Global change Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086262 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER - TY - CHAP A1 - Buck, R. A1 - Wurmhöringer, K. A1 - Lehle, R. A1 - Pfahl, A. A1 - Göttsche, Joachim A1 - Meyr, T. T1 - Development of a 30m2 heliostat with hydraulic drive T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 74 EP - 75 PB - Soc. OSC CY - Saint Maur ER - TY - CHAP A1 - Anthrakidis, Anette A1 - Herrmann, Ulf A1 - Schorn, Christian A1 - Schwarzer, Klemens A1 - Wedding, Philipp A1 - Weis, Fabian T1 - Development and Testing of a Novel Method for the Determination of the Efficiency of Concentrating Solar Thermal Collectors T2 - Conference Proceedings Solar World Congress 2015, Daegu, Korea, 08 – 12 November 2015 Y1 - 2015 ER - TY - CHAP A1 - Schwarzer, Klemens T1 - Desalination systems with renewable energies T2 - DME Seminar Desalination and Renewable Energies : June 19 and 20 2008, Solar Institut Jülich / Deutsche Meerwasserentsalzung e.V. Y1 - 2008 SN - 978-3-86861-017-8 PB - DME CY - Duisburg ER - TY - CHAP A1 - Schulte, Jonas A1 - Schwager, Christian A1 - Frantz, Cathy A1 - Schloms, Felix A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Control concept for a molten salt receiver in star design: Development, optimization and testing with cloud passage scenarios T2 - SolarPACES conference proceedings N2 - A promising approach to reduce the system costs of molten salt solar receivers is to enable the irradiation of the absorber tubes on both sides. The star design is an innovative receiver design, pursuing this approach. The unconventional design leads to new challenges in controlling the system. This paper presents a control concept for a molten salt receiver system in star design. The control parameters are optimized in a defined test cycle by minimizing a cost function. The control concept is tested in realistic cloud passage scenarios based on real weather data. During these tests, the control system showed no sign of unstable behavior, but to perform sufficiently in every scenario further research and development like integrating Model Predictive Controls (MPCs) need to be done. The presented concept is a starting point to do so. KW - Molten salt receiver KW - Star design KW - Control optimization KW - Cloud passages Y1 - 2023 U6 - http://dx.doi.org/10.52825/solarpaces.v1i.693 SN - 2751-9899 (online) N1 - 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA IS - Vol. 1 PB - TIB Open Publishing CY - Hannover ER - TY - CHAP A1 - Herrmann, Ulf A1 - Vorbrugg, O. A1 - Nava, P. T1 - Construction and Commissioning Process of the Andasol Solar Field T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 978-3-00-028755-8 PB - Deutsches Zentrum für Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph T1 - Comparison of steady-state and transient simulations for solar tower power plants with open-volumetric receiver T2 - SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain Y1 - 2011 CY - Granada ER - TY - CHAP A1 - Latzke, Markus A1 - Alexopoulos, Spiros A1 - Kronhardt, Valentina A1 - Rendón, Carlos A1 - Sattler, Johannes, Christoph T1 - Comparison of Potential Sites in China for Erecting a Hybrid Solar Tower Power Plant with Air Receiver T2 - Energy Procedia Y1 - 2015 U6 - http://dx.doi.org/10.1016/j.egypro.2015.03.142 SN - 1876-6102 N1 - International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014, Beijing, China SP - 1327 EP - 1334 ER - TY - CHAP A1 - Blanke, Tobias A1 - Dring, Bernd A1 - Vontein, Marius A1 - Kuhnhenne, Markus T1 - Climate Change Mitigation Potentials of Vertical Building Integrated Photovoltaic T2 - 8th International Workshop on Integration of Solar Power into Power Systems : 16-17 October 2018, Stockholm, Sweden Y1 - 2018 SP - 1 EP - 7 ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph A1 - Sattler, Johannes, Christoph T1 - Choice of solar share of a hybrid power plant of a central receiver system and a biogas plant in dependency of the geographical latitude T2 - World Renewable Energy Congress-Sweden : 8 -13 May, 2011, Linköping, Sweden / ed.: Bahram Moshfegh Y1 - 2011 SN - 9789173930703 SP - 3710 EP - 3717 PB - Univ. Electronic Pr. CY - Linköping ER - TY - CHAP A1 - Gorzalka, Philip A1 - Dahlke, Dennis A1 - Göttsche, Joachim A1 - Israel, Martin A1 - Patel, Dhruvkumar A1 - Prahl, Christoph A1 - Schmiedt, Jacob Estevam A1 - Frommholz, Dirk A1 - Hoffschmidt, Bernhard A1 - Linkiewicz, Magdalena T1 - Building Tomograph–From Remote Sensing Data of Existing Buildings to Building Energy Simulation Input T2 - EBC, Annex 71, Fifth expert meeting, October 17-19, 2018, Innsbruck, Austria Y1 - 2018 ER - TY - CHAP A1 - Frantz, Cathy A1 - Binder, Matthias A1 - Busch, Konrad A1 - Ebert, Miriam A1 - Heinrich, Andreas A1 - Kaczmarkiewicz, Nadine A1 - Schlögl-Knothe, Bärbel A1 - Kunze, Tobias A1 - Schuhbauer, Christian A1 - Stetka, Markus A1 - Schwager, Christian A1 - Spiegel, Michael A1 - Teixeira Boura, Cristiano José A1 - Bauer, Thomas A1 - Bonk, Alexander A1 - Eisen, Stefan A1 - Funck, Bernhard T1 - Basic Engineering of a High Performance Molten Salt Tower Receiver System T2 - Solar Paces 2020 Y1 - 2020 SP - 1 EP - 10 ER - TY - CHAP A1 - Aringhoff, R. A1 - Geyer, Michael A1 - Herrmann, Ulf A1 - Kistner, Rainer A1 - Nava, P. A1 - Osuna, R. ED - Steinfeld, Aldo T1 - AndaSol : 50MW Solar Plants with 9 Hour Storage for Southern Spain T2 - Proceedings of the 11th SolarPACES International Symposium on Concentrated Solar Power and Chemical Energy Technologies : September 4 - 6, 2002, Zurich, Switzerland / Paul Scherrer Institut, PSI; ETH, Eidgenössische Technische Hochschule Zürich Y1 - 2002 SN - 3-9521409-3-7 SP - 37 EP - 42 PB - Paul Scherrer Inst. CY - Villingen ER - TY - CHAP A1 - Sauerborn, Markus A1 - Liebenstund, Lena A1 - Raue, Markus A1 - Mang, Thomas A1 - Herrmann, Ulf A1 - Dueing, Andreas T1 - Analytic method for material aging and quality analyzing to forecast long time stability of plastic micro heliostat components T2 - AIP Conference Proceedings Y1 - 2017 U6 - http://dx.doi.org/10.1063/1.4984388 VL - 1850 IS - 1 SP - 030045-1 EP - 030045-8 ER - TY - CHAP A1 - Breitbach, Gerd A1 - Alexopoulos, Spiros A1 - May, Martin A1 - Teixeira Boura, Cristiano José A1 - Herrmann, Ulf T1 - Analysis of volumetric solar radiation absorbers made of wire meshes T2 - AIP Conference Proceedings Y1 - 2019 U6 - http://dx.doi.org/10.1063/1.5117521 SN - 0094243X VL - 2126 SP - 030009-1 EP - 030009-6 ER - TY - CHAP A1 - Gedle, Yibekal A1 - Schmitz, Mark A1 - Gielen, Hans A1 - Schmitz, Pascal A1 - Herrmann, Ulf A1 - Teixeira Boura, Cristiano José A1 - Mahdi, Zahra A1 - Caminos, Ricardo Alexander Chico A1 - Dersch, Jürgen T1 - Analysis of an integrated CSP-PV hybrid power plant T2 - SolarPACES 2020 N2 - In the past, CSP and PV have been seen as competing technologies. Despite massive reductions in the electricity generation costs of CSP plants, PV power generation is - at least during sunshine hours - significantly cheaper. If electricity is required not only during the daytime, but around the clock, CSP with its inherent thermal energy storage gets an advantage in terms of LEC. There are a few examples of projects in which CSP plants and PV plants have been co-located, meaning that they feed into the same grid connection point and ideally optimize their operation strategy to yield an overall benefit. In the past eight years, TSK Flagsol has developed a plant concept, which merges both solar technologies into one highly Integrated CSP-PV-Hybrid (ICPH) power plant. Here, unlike in simply co-located concepts, as analyzed e.g. in [1] – [4], excess PV power that would have to be dumped is used in electric molten salt heaters to increase the storage temperature, improving storage and conversion efficiency. The authors demonstrate the electricity cost sensitivity to subsystem sizing for various market scenarios, and compare the resulting optimized ICPH plants with co-located hybrid plants. Independent of the three feed-in tariffs that have been assumed, the ICPH plant shows an electricity cost advantage of almost 20% while maintaining a high degree of flexibility in power dispatch as it is characteristic for CSP power plants. As all components of such an innovative concept are well proven, the system is ready for commercial market implementation. A first project is already contracted and in early engineering execution. KW - Hybrid energy system KW - Power plants KW - Electricity generation KW - Energy storage KW - Associated liquids Y1 - 2022 SN - 978-0-7354-4195-8 U6 - http://dx.doi.org/10.1063/5.0086236 SN - 1551-7616 (online) SN - 0094-243X (print) N1 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems 28 September–2 October 2020 Freiburg, Germany IS - 2445 / 1 PB - AIP conference proceedings / American Institute of Physics CY - Melville, NY ER -