Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-5089 Wissenschaftlicher Artikel Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de Biogas systems: basics, biogas multifunction, principle of fermentation and hybrid application with a solar tower for the treatment of waste animal manure Two of the main environmental problems of today's society are the continuously increasing production of organic wastes as well as the increase of carbon dioxide in the atmosphere and the related green house effect. A way to solve these problems is the production of biogas. Biogas is a combustible gas consisting of methane, carbon dioxide and small amounts of other gases and trace elements. Production of biogas through anaerobic digestion of animal manure and slurries as well as of a wide range of digestible organic wastes and agricultural residues, converts these substrates into electricity and heat and offers a natural fertiliser for agriculture. The microbiological process of decomposition of organic matter, in the absence of oxygen takes place in reactors, called digesters. Biogas can be used as a fuel in a gas turbine or burner and can be used in a hybrid solar tower system offering a solution for waste treatment of agricultural and animal residues. A solar tower system consists of a heliostat field, which concentrates direct solar irradiation on an open volumetric central receiver. The receiver heats up ambient air to temperatures of around 700°C. The hot air's heat energy is transferred to a steam Rankine cycle in a heat recovery steam generator (HRSG). The steam drives a steam turbine, which in turn drives a generator for producing electricity. In order to increase the operational hours of a solar tower power plant, a heat storage system and/ or hybridization may be considered. The advantage of solar-fossil hybrid power plants, compared to solar-only systems, lies in low additional investment costs due to an adaptable solar share and reduced technical and economical risks. On sunny days the hybrid system operates in a solar-only mode with the central receiver and on cloudy days and at night with the gas turbine only. As an alternative to methane gas, environmentally neutral biogas can be used for operating the gas turbine. Hence, the hybrid system is operated to 100% from renewable energy sources 2012 7 Journal of Engineering Science and Technology Review 5 Special Issue on Renewable Energy Systems 4 48 55 campus http://www.jestr.org/downloads/Volume5Issue4/10.pdf Solar-Institut Jülich OPUS4-5721 Konferenzveröffentlichung Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Rau, Christoph, rau@sij.fh-aachen.de; Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Breitbach, Gerd, breitbach@fh-aachen.de; Latzke, Markus, latzke@sij.fh-aachen.de Modelling and validation of a transient heat recovery steam generator of the solar tower power plant Juelich Rijeka 2012 Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012 ID 97 Solar-Institut Jülich OPUS4-5722 Konferenzveröffentlichung Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Kluczka, Sven, kluczka@sij.fh-aachen.de; Vaeßen, Christiane, vaessen@fh-aachen.de; Roeb, M., ; Neises, M., Scenario development for efficient methanol production using CO2 and solar energy Rijeka 2012 Eurosun 2012 : Solar energy for a brighter future : conference proceedings : Rijeka, 18.-22.09.2012 ID 99 Solar-Institut Jülich OPUS4-5724 Konferenzveröffentlichung Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de Perspektiven für Solarthermische Kraftwerke im Sonnengürtel Baf Honnef DPG 2012 12 Energiewende : Aspekte, Optionen, Herausforderungen : Vorträge auf der DPG-Frühjahrstagung Arbeitskreis Energie in der Deutschen Physikalischen Gesellschaft Berlin, 26. bis 28. März 2012 / hrsg. von Hardo Bruhns 81 93 weltweit http://www.uni-saarland.de/fak7/fze/AKE_Archiv/DPG2012-AKE_Berlin/Buch/DPG2012_AKE8.2Hoffschmidt_SolarthermischeKraftwerke_p81.pdf Solar-Institut Jülich OPUS4-5734 Teil eines Buches Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Göttsche, Joachim, goettsche@sij.fh-aachen.de; Sauerborn, Markus, sauerborn@sij.fh-aachen.de High concentration solar collectors Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system. For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems. For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this chapter, different criteria for the choice of technology are analyzed in detail. Amsterdam Elsevier 2012 44 Comprehensive renewable energy / ed. Ali Sayigh. Vol. 3: Solar thermal systems: components and applications 3 978-0-08-087873-7 165 209 10.1016/B978-0-08-087872-0.00306-1 bezahl http://www.sciencedirect.com/science/article/pii/B9780080878720003061 Solar-Institut Jülich OPUS4-5699 Konferenzveröffentlichung Fricke, Barbara, fricke@sij.fh-aachen.de; Ziolko, C., ; Anthrakidis, Anette, anthrakidis@sij.fh-aachen.de; Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Giese, F., ; Dillig, M., InnoSol - environmental aspects of the open volumetric receiver technology Red Hook, NY Curran 2012 S. 3412 - 4265 30th ISES Biennial Solar World Congress 2011 : : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 3895 3900 Solar-Institut Jülich OPUS4-5735 Teil eines Buches Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Rau, Christoph, rau@sij.fh-aachen.de; Sattler, Johannes, Christoph, sattler@sij.fh-aachen.de; Anthrakidis, Anette, anthrakidis@sij.fh-aachen.de; Teixeira Boura, Cristiano José, boura@sij.fh-aachen.de; O'Connor, P., ; Hilger, Patrick, hilger@sij.fh-aachen.de Concentrating solar power Amsterdam Elsevier 2012 41 Comprehensive renewable energy / ed. Ali Sayigh. Vol. 3: Solar thermal systems: components and applications 3 978-0-08-087872-0 595 636 10.1016/B978-0-08-087872-0.00319-X bezahl http://www.sciencedirect.com/science/article/pii/B978008087872000319X Solar-Institut Jülich OPUS4-5700 Konferenzveröffentlichung Alexopoulos, Spiros, alexopoulos@sij.fh-aachen.de; Hoffschmidt, Bernhard, hoffschmidt@sij.fh-aachen.de; Rau, Christoph, rau@sij.fh-aachen.de; Sattler, Johannes, Christoph, sattler@sij.fh-aachen.de Simulation of hybrid solar tower power plants Red Hook, NY Curran 2012 S. 3412 - 4265 30th ISES Biennial Solar World Congress 2011 : Kassel, Germany, 28 August - 2 September 2011. Vol. 5 4044 4050 Solar-Institut Jülich