TY - JOUR A1 - Güsewell, Manfred A1 - Himmelberg, Axel A1 - Roth, Norbert A1 - Siepmann, Stefan T1 - Untersuchungen zu Quenchprozessen Y1 - 2001 ER - TY - JOUR A1 - Himmelberg, Axel A1 - Güsewell, Manfred T1 - Simulation von Zweiphasenströmungen in Gasquenchern Y1 - 2001 ER - TY - JOUR A1 - Roth, Norbert A1 - Güsewell, Manfred A1 - Himmelberg, Axel T1 - Gestaltung und Betrieb einer Technikumsquenchanlage Y1 - 2001 ER - TY - JOUR A1 - Roth, Norbert A1 - Güsewell, Manfred A1 - Himmelberg, Axel T1 - Messung von Tropfenmerkmalen in einer Quenchapparatur Y1 - 2001 ER - TY - CHAP A1 - Berg, Heinz Peter A1 - Antoshkiv, Oleksiy A1 - Himmelberg, Axel A1 - Izweik, Husni Taher A1 - Poojitganont, Thanapol T1 - Brennverfahrensentwicklung für eine neuartige Kreiskolbenmotorenfamilie, Wankelmotorenentwicklung KW - Wankelmotor KW - Verbrennung KW - Brennverfahren KW - Gemischbildung KW - Einspritzung KW - Optimierung Y1 - 2008 ER - TY - CHAP A1 - Antoshkiv, Oleksiy A1 - Berg, Heinz Peter A1 - Himmelberg, Axel T1 - Optimierung der Zündkerzenposition in einem Wankelmotor, Motorische Verbrennung KW - Wankelmotor KW - Zündung KW - Optimierung Spray KW - Gemischbildung Y1 - 2007 ER - TY - CHAP A1 - Poojitganont, Thanapol A1 - Berg, Heinz Peter A1 - Izweik, Husni Taher A1 - Himmelberg, Axel T1 - Wankel Rotary Engine for Small Aircrafts and UAVs Applications: The Simulation for Chamber Design Development KW - Wankelmotor KW - Flugantribe KW - Simulation KW - Verbrennung Y1 - 2007 ER - TY - CHAP A1 - Berg, Peter A1 - Himmelberg, Axel A1 - Malenky, Uwe A1 - Meincke, Marie A1 - Soontornpasatch, Tosaporns T1 - Hybrides Turbo Compound Fan Triebwerk T2 - Deutscher Luft- und Raumfahrtkongress 2016, Braunschweig N2 - Der Weg zum elektrischen Fliegen ist abhängig von der Entwicklung hochleistungsfähiger, kompakter und vor allem leichter Energiespeicher. Als mittelfristige, umweltschonende Überganglösung bieten sich, insbesondere für Flugtriebwerke mittlerer Leistungsklassen, Hybridsysteme aus Turbo-Compound-Kreiskolbenmotoren und Elektromaschinen für die Start- und Steigphasen an. Vorgestellt werden auf dem HSD-Konzept (HSD=Hybrid Super-Drive, vgl. [1]) beruhende luftfahrtechnische Anwendungen für unterschiedliche parallelhybride Flugantriebe. Die Basistechnologie stützt sich auf eine in der Produktion befindliche, vielstofffähige Wankeltriebwerksfamilie. Das HSD-Konzept legt hierbei ein Kammervolumen von 650ccm zu Grunde. Der Leistungsbereich (0,8 bis 1,36MW) wird mit einem innovativen elektrischen parallel-hybriden Turbo-Compound-Konzept abgedeckt. Hierbei kommt zur Aufladung der Kreiskolben-Verbrennungsmaschine eine neuartige luftgelagerte Turbomaschine mit integrierter E-Maschine zum Einsatz. Als Vortriebstechnologie trägt das Counter-Rotating-Fan (CRF)-Konzept, welches am Beispiel eines Flugzeugtechnologieträgers (Light-Jet) dargestellt wird, zur weiteren Steigerung der Wirtschaftlichkeit des Gesamtsystems bei. Der vorliegende Artikel basiert auf den in [1] beschrieben Grundlagen und stellt eine weiterführende Diskussion im Rahmen des DLRK dar. KW - Hyrides Fliegen KW - Luftfahrtantriebe Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:101:1-201610075510 PB - Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V CY - Bonn ER - TY - GEN A1 - Berg, Heinz Peter A1 - Himmelberg, Axel A1 - Lehmann, Mario A1 - Dückershoff, Roland A1 - Neumann, Mathias T1 - The Turbo-Fuel-Cell 1.0 – family concept - Compact Micro Gas Turbine (MGT) – Solid Oxide Fuel Cell (SOFC) energy converters in the 100 - 500 kW electrical power range for the future T2 - IOP conference series : Materials Science and Engineering N2 - The “Turbo-Fuel-Cell-Technology” has been described as a MGT-SOFC hybrid system consisting of a recuperated micro gas turbine (MGT) process with an embedded solid oxide fuel cell (SOFC) subsystem. SOFC stacks are connected to “SOFC stack grapes” and are equipped with the so called HEXAR-Module. This module is composed of a high-temperature heat exchanger (HEX), an afterburner (A) and a steam reformer (R). The MGT-concept is based on a generator driven directly by the turbomachine and a recuperator, which returns the exhaust heat to the pressurized compressor outlet air. This provides the necessary base for a highly effective, pure MGT process and the “MGT-SOFC-high-efficiency process”. This paper describes the concept and the thermodynamic background of a highly effective and compact design of the “Turbo-Fuel-Cell 1.0-Family” in the electrical performance class from 100 to 500kW. The technological state of the system is shown and a rating of the system with comparative parameters is discussed. It becomes visible that all necessary basic technologies should be available and that the technology (for stationary applications) can have the “entry into services (E.I.S.)” in the next 10 years. The MGT-SOFC performance map under different operation conditions is discussed. This article also provides an overview of the research on MGT-SOFC-Systems and the scenario of an energy supply network and a mobile energy conversion of the future introduction. KW - MGT-SOFC KW - Brennstoffzellen KW - Mikrogasturbinen KW - Hybrid Y1 - 2018 UR - http://iopscience.iop.org/article/10.1088/1757-899X/297/1/012004 U6 - https://doi.org/doi:10.1088/1757-899X/297/1/012004 SN - 1757-899X VL - 297 ER - TY - GEN A1 - Berg, Heinz Peter A1 - Kleissl, Marko A1 - Himmelberg, Axel A1 - Lehmann, Mario A1 - Prechavut, Nontavut A1 - Vorpahl, Michael ED - Prukvilailert, Monchai T1 - Heat balancing of direct reforming fuel cells in MGT-SOFC hybrid systems T2 - 9th Thai Society of Mechanical Engineers, International Conference on Mechanical Engineering (TSME-ICoME 2018) 11–14 December 2018, Phuket, Thailand N2 - Solid oxide fuel cells convert chemical energy in electrical energy and are highly suitable for the conversion of hydrocarbon based fuels and products from PowerToGas conversions. Embedded in a micro gas turbine-cycle instead of the combustion chamber the heat energy of the injected fuel, released in the SOFC-Stack, can additionally converted into work and by a turbine-generator into electricity. In a compact system, SOFC stacks are designed to realize a direct steam-reforming process inside. In such direct-reforming fuel cell systems the SOFC operating temperature due to the heat demand for reforming, can be reduced to a value in the range of the outlet temperature of the downstream flow (650°C). If the cycle uses a recuperating system, the operating conditions of the SOFC can be realized without additional high-temperature heat exchanger systems. The system with an uncooled turbine, described in [1], just can reach the operating temperature with an additional high-temperature heat exchange. The system described in this publication does not require an additional high-temperature heat exchanger, because the X-value, as the ratio between the exchanged heat quantity and the required amount of heat to complete the MGT-cycle [2] due to the referring process, is nearly zero and can be realized via the inner container wall (of the MLC). The cycle is completed (between the SOFC and the turbine entry) by the heat input of an afterburner. Here the unreacted fuel of the SOFC fuel-stream is used to provide the necessary heat energy for the downstream turbo-generator-system. KW - MGT-SOFC KW - Heat balancing KW - simulation KW - thermodynamic cycle KW - effectivity Y1 - 2018 UR - https://iopscience.iop.org/article/10.1088/1757-899X/501/1/012007/meta U6 - https://doi.org/10.1088/1757-899X/501/1/012007 SN - 1757-899X SP - 50 EP - 60 PB - IOP Publishing/IOP Science CY - Bristol ET - 1. Auflage ER -