TY  - JOUR
A1  - Agrafiotis, Christos C.
A1  - Mavroidis, Ilias
A1  - Konstandopoulos, Athansios G.
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, Per
A1  - Romero, Manuel
A1  - Fernandez-Quero, Valerio
T1  - Evaluation of porous silicon carbide monolithic honeycombs as volumetric receivers/collectors of concentrated solar radiation
JF  - Solar energy materials and solar cells
Y1  - 2007
SN  - 1879-3398 (E-Journal); 0927-0248 (Print)
VL  - Vol. 91
IS  - Iss. 6
SP  - 474
EP  - 488
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  - 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  - 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  - 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  - 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  - 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  - CHAP
A1  - Alexopoulos, Spiros
T1  - Biomass technology and bio-fuels: Heating/cooling and power
T2  - Renewable energy systems : theory, innovations, and intelligent applications / eds.: Socrates Kaplanis and Eleni Kaplani
Y1  - 2013
SN  - 9781624177415
SP  - 501
EP  - 523
PB  - Nova Science Publ.
CY  - Hauppauge, NY
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  - Kluczka, Sven
A1  - Eckstein, Julian
A1  - Alexopoulos, Spiros
A1  - Vaeßen, Christiane
A1  - Roeb, Martin
T1  - Process simulation for solar steam and dry reforming
JF  - Energy procedia : Proceedings of the SolarPACES 2013 International Conference
N2  - In co-operation with the German Aerospace Center, the Solar-Institut Jülich has been analyzing the different technologies that are available for methanol production from CO2 using solar energy. The aim of the project is to extract CO2 from industrial exhaust gases or directly from the atmosphere to recycle it by use of solar energy. Part of the study was the modeling and simulating of a methane reformer for the production of synthesis gas, which can be operated by solar or hybrid heat sources. The reformer has been simplified in such a way that the model is accurate and enables fast calculations. The developed pseudo-homogeneous one- dimensional model can be regarded as a kind of counter-current heat exchanger and is able to incorporate a steam reforming reaction as well as a dry reforming reaction.
Y1  - 2014
U6  - http://dx.doi.org/10.1016/j.egypro.2014.03.092
SN  - 1876-6102 (E-Journal)
VL  - 49
SP  - 850
EP  - 859
PB  - Elsevier
CY  - Amsterdam
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  - JOUR
A1  - Alexopoulos, Spiros
T1  - Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln
JF  - Applied Thermal Engineering
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.applthermaleng.2015.01.007
SN  - 1359-4311
N1  - Autor im Original: Spiridon O. Alexopoulos
VL  - 78
SP  - 387
EP  - 396
PB  - Elsevier
CY  - Amsterdam
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  - 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  - JOUR
A1  - Herrmann, Ulf
A1  - Kearney, David W.
T1  - Survey of Thermal Energy Storage for Parabolic Trough Power Plants
JF  - Journal of Solar Energy Engineering
Y1  - 2002
U6  - http://dx.doi.org/10.1115/1.1467601
SN  - 1528-8986 (Online)
SN  - 0199-6231 (Print)
VL  - 124
IS  - 2
SP  - 145
EP  - 152
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Kelly, Bruce
A1  - Price, Henry
T1  - Two Tank Molten Salt Storage for Parabolic Trough Solar Power Plants
JF  - Energy : the international journal
Y1  - 2002
U6  - http://dx.doi.org/10.1016/S0360-5442(03)00193-2
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 883
EP  - 893
ER  - 
TY  - JOUR
A1  - Kearney, David W.
A1  - Kelly, Bruce
A1  - Herrmann, Ulf
A1  - Cable, R.
A1  - Pacheco, J.
A1  - Mahoney, R.
A1  - Price, Henry
A1  - Blake, D.
A1  - Nava, P.
A1  - Potrovitza, N.
T1  - Engineering Aspects of a Molten Salt Heat Transfer Fluid in a Trough Solar Field
JF  - Energy : the international journal
Y1  - 2002
U6  - http://dx.doi.org/10.1016/S0360-5442(03)00191-9
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 861
EP  - 870
ER  - 
TY  - JOUR
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
T1  - Trough integration into power plants—a study on the performance and economy of integrated solar combined cycle systems
JF  - Energy : the international journal
Y1  - 2004
U6  - http://dx.doi.org/10.1016/S0360-5442(03)00199-3
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 947
EP  - 959
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 <Washington, D.C.>
SP  - 393
EP  - 398
PB  - ASME
CY  - New York, NY
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  -