TY - JOUR A1 - Warerkar, Shashikant A1 - Schmitz, Stefan A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Reißel, Martin A1 - Tamme, Rainer T1 - Air-Sand Heat Exchanger for High-Temperature Storage JF - Journal of Solar Energy Engineering. 133 (2011), H. 2 Y1 - 2011 SN - 0199-6231 N1 - 7 pages SP - 021010 PB - ASME CY - New York ER - TY - JOUR A1 - Vieira da Silva, Maria Eugenia A1 - Schwarzer, Klemens A1 - Hoffschmidt, Bernhard A1 - Pinheiro Rodrigues, Frederico A1 - Schwarzer, Tarik A1 - Costa Rocha, Paulo Alexandre T1 - Mass transfer correlation for evaporation–condensation thermal process in the range of 70 °C–95 °C JF - Renewable energy Y1 - 2013 SN - 1879-0682 (E-Journal); 0960-1481 (Print) VL - Vol. 53 SP - 174 EP - 179 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Schwarzer, Klemens A1 - da Silva, Vieira E. A1 - Hoffschmidt, Bernhard A1 - Schwarzer, T. T1 - A new solar desalination system with heat recovery for decentralised drinking water production JF - Desalination. 248 (2009), H. 1-3 Y1 - 2009 SN - 0011-9164 N1 - Water and Sanitation in International Development and Disaster Relief (WSIDDR) International Workshop Edinburgh, Scotland, UK, 28–30 May 2008 SP - 204 EP - 211 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Rau, Christoph A1 - Alexopoulos, Spiros A1 - Breitbach, Gerd A1 - Hoffschmidt, Bernhard A1 - Latzke, Markus A1 - Sattler, Johannes, Christoph T1 - Transient simulation of a solar-hybrid tower power plant with open volumetric receiver at the location Barstow JF - Energy procedia : proceedings of the SolarPACES 2013 International Conference N2 - In this work the transient simulations of four hybrid solar tower power plant concepts with open-volumetric receiver technology for a location in Barstow-Daggett, USA, are presented. The open-volumetric receiver uses ambient air as heat transfer fluid and the hybridization is realized with a gas turbine. The Rankine cycle is heated by solar-heated air and/or by the gas turbine's flue gases. The plant can be operated in solar-only, hybrid parallel or combined cycle-only mode as well as in any intermediate load levels where the solar portion can vary between 0 to 100%. The simulated plant is based on the configuration of a solar-hybrid power tower project, which is in planning for a site in Northern Algeria. The meteorological data for Barstow-Daggett was taken from the software meteonorm. The solar power tower simulation tool has been developed in the simulation environment MATLAB/Simulink and is validated. Y1 - 2014 U6 - http://dx.doi.org/10.1016/j.egypro.2014.03.157 SN - 1876-6102 VL - 49 SP - 1481 EP - 1490 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Kronhardt, Valentina A1 - Alexopoulos, Spiros A1 - Reißel, Martin A1 - Sattler, Johannes, Christoph A1 - Hoffschmidt, Bernhard A1 - Hänel, Matthias A1 - Doerbeck, Till T1 - High-temperature thermal storage system for solar tower power plants with open-volumetric air receiver simulation and energy balancing of a discretized model JF - Energy procedia N2 - This paper describes the modeling of a high-temperature storage system for an existing solar tower power plant with open volumetric receiver technology, which uses air as heat transfer medium (HTF). The storage system model has been developed in the simulation environment Matlab/Simulink®. The storage type under investigation is a packed bed thermal energy storage system which has the characteristics of a regenerator. Thermal energy can be stored and discharged as required via the HTF air. The air mass flow distribution is controlled by valves, and the mass flow by two blowers. The thermal storage operation strategy has a direct and significant impact on the energetic and economic efficiency of the solar tower power plants. Y1 - 2014 U6 - http://dx.doi.org/10.1016/j.egypro.2014.03.094 SN - 1876-6102 (E-Journal) ; 1876-6102 (Print) VL - 49 SP - 870 EP - 877 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Téllez, Félix M. A1 - Valverde, Antonio A1 - Fernandez, Valerio A1 - Fernandez, Jesus T1 - Performance evaluation of the 200-kWth HiTRec-II open volumetric air receiver JF - Journal of solar energy engineering Y1 - 2003 VL - Vol. 125 IS - Iss. 1 SP - 87 EP - 94 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Riffelmann, K.-J. A1 - Krödel, M. A1 - Rietbrock, P. T1 - PHITREC - pressurized volumetric air receiver for high temperature solar applications / K.-J. Riffelmann ; B. Hofschmidt ... JF - Forschungsbericht : DLR FB. 10 (2001) Y1 - 2001 SN - 0939-2963 N1 - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation SP - 73 EP - 74 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Pitz-Paal, Robert A1 - Böhmer, M. T1 - A new closed/open volumetric receiver concept for parabolictrough collectors (test results) JF - Journal de physique. 9 (1999), H. 3 Y1 - 1999 SN - 1155-4339 SP - 3 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Pitz-Paal, R. A1 - Böhmer, M. T1 - Experimental and numerical evaluation of the performance and flow stability of different types of open volumetric absorbers under non-homogeneous irradiation / R. Pitz-Pahl ; B. Hofschmidt ; M. Böhmer ... JF - Solar energy. 60 (1997), H. 3-4 Y1 - 1997 SN - 0038-092X SP - 135 EP - 150 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Krüger, D. A1 - Hennecke, K. T1 - Results from parabolic trough systems for process heat at the DLR Cologne / D. Krüger ; B. Hoffschmidt ; K. Hennecke ... JF - Solar thermal 2000 : proceedings of the 10th SolarPACES International Symposium on Solar Thermal Concentrating Technologies, Sydney, Australia, 8 - 10 March 2000 ; part of the Y1 - 2000 N1 - International Symposium on Solar Thermal Concentrating Technologies <10, 2000, Sydney> SP - 113 EP - 120 CY - Sydney ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fernandez, V. A1 - Konstandopoulus, A. G. T1 - Development of ceramic volumetric receiver technology JF - Forschungsbericht : DLR FB. 10 (2001) Y1 - 2001 SN - 0939-2963 N1 - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation SP - 51 EP - 61 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Pitz-Paal, Robert A1 - Reutter, Oliver T1 - Two novel high-porosity materials as volumetric receivers for concentrated solar radiation / Thomas Fend ; Robert Pitz-Paal ; Oliver Reutter ... Bernhard Hoffschmidt JF - Solar energy materials & solar cells. 84 (2004), H. 1 Y1 - 2004 SN - 0927-0248 SP - 291 EP - 304 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Pitz-Paal, Robert A1 - Reutter, Oliver T1 - Porous materials as open volumetric solar receivers - Experimental determination of thermophysical and heat transfer properties / Thomas Fend ; Bernhard Hoffschmidt ... JF - Energy. 29 (2004), H. 5 Y1 - 2004 SN - 0360-5442 SP - 823 EP - 834 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Jorgensen, Gary A1 - Küster, Harald T1 - Comparative assessment of solar concentrator materials / Fend, Thomas ; Hoffschmidt, Bernhard ; Jorgensen, Gary ; Küster, Harald ; Krüger, Dirk ; Pitz-Paal, Robert ; Riebrock, Peter ; Riffelmann, Klaus-Jürgen JF - Solar energy. 74 (2003), H. 2 Y1 - 2003 SN - 0038-092X SP - 149 EP - 155 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Fend, Thomas A1 - Jorgensen, Gary T1 - Comparative assessment of solar concentrator materials / Thomas Fend ; Bernhard Hoffschmidt ; Gary Jorgensen ... JF - Renewable energy for local communities of Europe : (toward Rio+10) ; proceedings / EuroSun 2002, the 4th ISES Europe Solar Congress ; Bologna (Italy), 23 - 26 June 2002 / ISES Italia Y1 - 2002 SN - 88-900893-0-X N1 - Eurosun <4, 2002, Bologna> ; International Solar Energy Society SP - paper_125.pdf CY - Bologna ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Buck, R. A1 - Fend, Thomas T1 - Porous materials as volumetric solar receivers : experimental approach towards a detailed characterisation of instability problems / R. Buck ; T. Fend ; B. Hoffschmidt ... JF - Forschungsbericht : DLR FB. 10 (2001) Y1 - 2001 SN - 0939-2963 N1 - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation SP - 71 EP - 72 ER - TY - JOUR A1 - Hoffschmidt, Bernhard A1 - Becker, M. A1 - Fend, Thomas T1 - Theoretical and numerical investigation of flow stability in porous materials applied as volumetric solar receivers / M. Becker ; T. Fend ; B. Hoffschmidt ... JF - Solar energy. 80 (2006), H. 10 Y1 - 2006 SN - 0038-092X N1 - Solar Power and Chemical Energy Systems (SolarPACES’04) SP - 1241 EP - 1248 ER - TY - JOUR A1 - Hennecke, Klaus A1 - Schwarzbözl, Peter A1 - Hoffschmidt, Bernhard A1 - Göttsche, Joachim A1 - Koll, G. A1 - Beuter, M. A1 - Hartz, T. T1 - The solar power tower Jülich – a solar thermal power plant for test and demonstration of air receiver JF - Solar energy and human settlement : Elektronische Ressource : proceedings of ISES world congress 2007 ; (Vol. I - Vol. V) / [ISES Solar World Congress. ISES, International Solar Energy Society]. D. Yogi Goswami ; Yuwen Zhao Y1 - 2007 SN - 978-7-302-16146-2 N1 - Solar World Congress <2007, Beijing> ; International Solar Energy Society SP - 1749 EP - 1753 PB - Tsinghua Univ. Press CY - Beijing ER - TY - JOUR A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Schmitz, Stefan A1 - Sauerborn, Markus T1 - Solar Concentrating Systems Using Small Mirror Arrays / Göttsche, Joachim ; Hoffschmidt, Bernhard ; Schmitz, Stefan ; Sauerborn, Markus ; Buck, Reiner ; Teufel, Edgar ; Badstübner, Karin ; Ifland, David ; Rebholz, Christian JF - Proceedings of the 2nd International Conference on Energy Sustainability - 2008 : : presented ... August 10 - 14, 2008, Jacksonville, Florida, USA / sponsored by Advanced Energy Systems Division, ASME; Solar Energy Division, ASME Y1 - 2009 SN - 9780791843208 N1 - International Conference on Energy Sustainability ; (2 : ; 2008.08.10-14 : ; Jacksonville, Fla.) ; ES ; (2 : ; 2008.08.10-14 : ; Jacksonville, Fla.) SP - 1 EP - 5 PB - ASME CY - New York, NY ER - TY - JOUR A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Schmitz, Stefan A1 - Sauerborn, Markus T1 - Solar Concentrating Systems Using Small Mirror Arrays JF - Journal of solar energy engineering Y1 - 2010 SN - 0199-6231 VL - Vol. 132 IS - Iss. 1 SP - 4 S. ER -