TY  - CHAP
A1  - Sattler, Johannes Christoph
A1  - Atti, Vikrama Naga Babu
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 2022 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  - https://doi.org/10.52825/solarpaces.v1i.731
SN  - 2751-9899 (online)
N1  - SolarPACES 2022, 28th International Conference on Concentrating Solar Power and Chemical Energy Systems, 27-30 September, Albuquerque, NM, USA
IS  - 1
PB  - TIB Open Publishing
CY  - Hannover
ER  - 
TY  - CHAP
A1  - Morandi, Paolo
A1  - Butenweg, Christoph
A1  - Breis, Khaled
A1  - Beyer, Katrin
A1  - Magenes, Guido
ED  - Arion, Cristian
ED  - Scupin, Alexandra
ED  - Ţigănescu, Alexandru
T1  - Behaviour factor q for the seismic design of URM buildings
T2  - The Third European Conference on Earthquake Engineering and Seismology
N2  - Recent earthquakes showed that low-rise URM buildings following codecompliant seismic design and details behaved in general very well without substantial damages. Although advances in simulation tools make nonlinear calculation methods more readily accessible to designers, linear analyses will still be the standard design method for years to come. The present paper aims to improve the linear seismic design method by providing a proper definition of the q-factor of URM buildings. Values of q-factors are derived for low-rise URM buildings with rigid diaphragms, with reference to modern structural configurations realized in low to moderate seismic areas of Italy and Germany. The behaviour factor components for deformation and energy dissipation capacity and for overstrength due to the redistribution of forces are derived by means of pushover analyses. As a result of the investigations, rationally based values of the behaviour factor q to be used in linear analyses in the range of 2.0 to 3.0 are proposed.
KW  - unreinforced masonry buildings
KW  - modern constructions
KW  - seismic design
KW  - linear elastic analysis;
KW  - behaviour factor q
Y1  - 2022
SN  - 978-973-100-533-1
N1  - 3ECEES - Third European Conference on Earthquake Engineering and Seismology, September 4 – September 9, 2022, Bucharest
SP  - 1184
EP  - 1194
ER  - 
TY  - CHAP
A1  - Chico Caminos, Ricardo Alexander
A1  - Schmitz, Pascal
A1  - Atti, Vikrama Naga Babu
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  - https://doi.org/10.1063/5.0086262
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - SOLARPACES 2020: 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  - 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  - https://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  - Augenstein, Eckardt
A1  - Herbergs, S.
A1  - Kuperjans, Isabel
T1  - TOP-Energy : softwaregestützte Analyse und Optimierung industrieller Energieversorgungssysteme ; Postershow
T2  - Optimierung in der Energiewirtschaft : Tagung Stuttgart, 27. und 28. Oktober 2005. - (VDI-Berichte ; 1908)
Y1  - 2005
SN  - 3-18-091908-6
SP  - 279
EP  - 282
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - CHAP
A1  - Pauksztat, Anja
A1  - Kuperjans, Isabel
A1  - de Hesselle, M.
T1  - Referenzformeln für Energiebedarf und CO2-Emissionen in der Glasindustrie
T2  - Energieeffizienz - Chancen für die Zukunft : Tagung Berlin, 14. und 15. November 2006. - (VDI-Berichte ; 1951)
Y1  - 2006
SN  - 3-18-091951-5
SP  - 179
EP  - 190
PB  - VDI-Verl.
CY  - Düsseldorf
ET  - Nichtred. Ms.-Dr.
ER  -