@inproceedings{ChicoCaminosSchmitzAttietal.2022, author = {Chico Caminos, Ricardo Alexander and Schmitz, Pascal and Atti, Vikrama and Mahdi, Zahra and Teixeira Boura, Cristiano Jos{\´e} and Sattler, Johannes Christoph and Herrmann, Ulf and Hilger, Patrick and Dieckmann, Simon}, title = {Development of a micro heliostat and optical qualification assessment with a 3D laser scanning method}, series = {SOLARPACES 2020}, booktitle = {SOLARPACES 2020}, number = {2445 / 1}, publisher = {AIP conference proceedings / American Institute of Physics}, address = {Melville, NY}, isbn = {978-0-7354-4195-8}, issn = {1551-7616 (online)}, doi = {10.1063/5.0086262}, pages = {8 Seiten}, year = {2022}, abstract = {The Solar-Institut J{\"u}lich (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.}, language = {en} } @inproceedings{BuckWurmhoeringerLehleetal.2010, author = {Buck, R. and Wurmh{\"o}ringer, K. and Lehle, R. and Pfahl, A. and G{\"o}ttsche, Joachim and Meyr, T.}, title = {Development of a 30m2 heliostat with hydraulic drive}, series = {SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France}, booktitle = {SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France}, publisher = {Soc. OSC}, address = {Saint Maur}, pages = {74 -- 75}, year = {2010}, language = {en} } @article{BuckSchwarzerMelissetal.1994, author = {Buck, H. and Schwarzer, Klemens and Meliß, Michael and Faber, Christian}, title = {Aus- und Weiterbildung am Solar-Institut J{\"u}lich}, series = {Energiewirtschaftliche Tagesfragen. 44 (1994), H. 9}, journal = {Energiewirtschaftliche Tagesfragen. 44 (1994), H. 9}, isbn = {0720-6240}, pages = {65 -- 68}, year = {1994}, language = {de} } @article{BuckFaberMelissetal.1995, author = {Buck, H. and Faber, Christian and Meliß, Michael and Schwarzer, Klemens}, title = {Aus- und Weiterbildung am Solar-Institut J{\"u}lich}, series = {Energie f{\"u}r die Zukunft : 28. Juni bis 1. Juli 1994 ; [Tagungsbericht 2] / 9. Internationales Sonnenforum '94. [Hrsg. Deutsche Gesellschaft f{\"u}r Sonnenenergie e.V. - DGS. Red. A. Hohmann ; H. H. Hohmann]. - (Internationales Sonnenforum ; 9,2)}, journal = {Energie f{\"u}r die Zukunft : 28. Juni bis 1. Juli 1994 ; [Tagungsbericht 2] / 9. Internationales Sonnenforum '94. [Hrsg. Deutsche Gesellschaft f{\"u}r Sonnenenergie e.V. - DGS. Red. A. Hohmann ; H. H. Hohmann]. - (Internationales Sonnenforum ; 9,2)}, publisher = {DGS-Sonnenenergie}, address = {M{\"u}nchen}, pages = {1779 -- 1785}, year = {1995}, language = {de} } @inproceedings{BreitbachAlexopoulosMayetal.2019, author = {Breitbach, Gerd and Alexopoulos, Spiros and May, Martin and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Analysis of volumetric solar radiation absorbers made of wire meshes}, series = {AIP Conference Proceedings}, volume = {2126}, booktitle = {AIP Conference Proceedings}, issn = {0094243X}, doi = {10.1063/1.5117521}, pages = {030009-1 -- 030009-6}, year = {2019}, language = {en} } @inproceedings{BreitbachAlexopoulosHoffschmidt2007, author = {Breitbach, Gerd and Alexopoulos, Spiros and Hoffschmidt, Bernhard}, title = {Fluid flow in porous ceramic multichannel crossflower filter modules}, publisher = {COMSOL Inc.}, address = {Burlington, Mass.}, pages = {5 S.}, year = {2007}, language = {en} } @techreport{Breitbach2009, author = {Breitbach, Gerd}, title = {Endbericht f{\"u}r das Projekt FilterCaps : Vorhabensbezeichnung: Entwicklung eines W{\"a}rmespeichers f{\"u}r str{\"o}mungsrichtungsinvertierende L{\"u}ftungssysteme mit integrierter Filterwirkung : F{\"o}rderkennzeichen: 1752X06}, pages = {82 S.}, year = {2009}, language = {de} } @book{BostelKleemannMelissetal.1981, author = {Bostel, J{\"o}rg and Kleemann, Manfred and Meliß, Michael and Sharan, H. N.}, title = {Die Nutzung neuer und erneuerbarer Energiequellen in Entwicklungsl{\"a}ndern. Bd. 1: Auswertung der L{\"a}nderpapiere f{\"u}r die Konferenz der Vereinten Nationen {\"u}ber neue und erneuerbare Energiequellen, Nairobi 1981. - (Aktuelle Beitr{\"a}ge zur Energiediskussion ; Nr. 7,1. Spezielle Berichte der Kernforschungsanlage J{\"u}lich ; 177,1.}, publisher = {Zentralbibliothek der Kernforschungsanlage J{\"u}lich}, address = {J{\"u}lich}, pages = {VII, 154 S.}, year = {1981}, language = {de} } @book{BonnetFeustelBueechlFritzscheetal.1988, author = {Bonnet, Dieter and Feustel-B{\"u}echl, J{\"o}rg E. and Fritzsche, Albert and Gieseler, Gernot and Kappelmeyer, Oskar and Koske, Peter H. and Meliß, Michael and Rickus, Edmund and Rohde, F. G.}, title = {Nutzung regenerativer Energie. (Handbuchreihe Energie. Bd. 13)}, publisher = {Resch; T{\"U}V Rheinland}, address = {K{\"o}ln}, isbn = {3-87806-110-2}, pages = {XIX, 552 S. : Ill., graph. Darst.}, year = {1988}, language = {de} } @inproceedings{BlankeSchmidtGoettscheetal.2022, author = {Blanke, Tobias and Schmidt, Katharina S. and G{\"o}ttsche, Joachim and D{\"o}ring, Bernd and Frisch, J{\´e}r{\^o}me and van Treeck, Christoph}, title = {Time series aggregation for energy system design: review and extension of modelling seasonal storages}, series = {Energy Informatics}, volume = {5}, booktitle = {Energy Informatics}, number = {1, Article number: 17}, editor = {Weidlich, Anke and Neumann, Dirk and Gust, Gunther and Staudt, Philipp and Sch{\"a}fer, Mirko}, publisher = {Springer Nature}, issn = {2520-8942}, doi = {10.1186/s42162-022-00208-5}, pages = {14 Seiten}, year = {2022}, abstract = {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.}, language = {en} }