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  - 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  - 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  - 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  - 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  - 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  - 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  - 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  - 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  - JOUR
A1  - Göttsche, Joachim
A1  - Schwarzer, Klemens
A1  - Röther, S.
A1  - Jellinghaus, Sabine
T1  - Efficient daylighting, heating and shading with rooflight heliostats
JF  - Conference Internationale Energie Solaire et Batiment
Y1  - 2009
SP  - 243
EP  - 248
PB  - EPFL
CY  - Lausanne
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  - JOUR
A1  - Göttsche, Joachim
T1  - Eldorado summer schools
JF  - Progress in solar energy education. 3 (1994)
Y1  - 1994
SN  - 1018-5607
SP  - 31
EP  - 33
ER  - 
TY  - JOUR
A1  - Göttsche, Joachim
A1  - Hinsch, Andreas
A1  - Wittwer, Volker
T1  - Electrochromic mixed WO3-TiO2 thin films produced by sputtering and the sol-gel technique : a comparison / J. Göttsche ; A. Hinsch ; V. Wittwer
JF  - Solar Energy Materials and Solar Cells. 31 (1993), H. 3
Y1  - 1993
SN  - 0927-0248
SP  - 415
EP  - 428
ER  - 
TY  - JOUR
A1  - Göttsche, Joachim
A1  - Gabrysch, K.
A1  - Schiller, H.
A1  - Kauert, B.
A1  - Schwarzer, Klemens
T1  - Energetic Effects of demand – controlled ventilation retrofitting in a biochemical laboratory building
JF  - AIVC publications [Elektronische Ressource] / Air Infiltration and Ventilation Centre
Y1  - 2004
N1  - AIVC Conference <25, Prague, 2004>
SP  - 50
PB  - INIVE EEIG
CY  - Brussels
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  - 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  - 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  - 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  - 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  - 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  -