Browsing by Subject "Hydrogen"

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  • Frank, Irmgard; Genuit, Stefanie; Matz, Florian; Oschinski, Hedda (Chichester : John Wiley and Sons Ltd, 2020)
    The hypothesis that nuclear motion can be described classically has been tested for several critical systems. We investigate the inversion of ammonia and the heat capacities of water and hydrogen. We use conventional ab ...
  • Kadyk, Thomas; Winnefeld, Christopher; Hanke-Rauschenbach, Richard; Krewer, Ulrike (Basel : MDPI AG, 2018)
    In this paper, the design of fuel cells for the main energy supply of passenger transportation aircraft is discussed. Using a physical model of a fuel cell, general design considerations are derived. Considering different ...
  • Trinke, P.; Keeley, G.P.; Carmo, M.; Bensmann, B.; Hanke-Rauschenbach, R. (Bristol : IOP Publishing Ltd., 2019)
    An important challenge for polymer electrolyte membrane (PEM) water electrolysis is to reduce the permeation of the produced gases. This crossover affects the cell efficiency and causes safety issues. The crossover increases ...
  • Abel, Arvid; Wessarges, Yvonne; Julmi, Stefan; Hoff, Christian; Hermsdorf, Jörg; Klose, Christian; Maier, Hans Jürgen; Kaierle, Stefan; Overmeyer, Ludger (Amsterdam : Elsevier B.V., 2020)
    Growing demand for individual and especially complex parts with emphasis on biomedical or lightweight applications enhances the importance of laser powder bed fusion. Magnesium alloys offer both biocompatibility and low ...
  • Winnefeld, Christopher; Kadyk, Thomas; Bensmann, Boris; Krewer, Ulrike; Hanke-Rauschenbach, Richard (Basel : MDPI AG, 2018)
    In the near future, the challenges to reduce the economic and social dependency on fossil fuels must be faced increasingly. A sustainable and efficient energy supply based on renewable energies enables large-scale applications ...
  • Goldmann, Andreas; Sauter, Waldemar; Oettinger, Marcel; Kluge, Tim; Schröder, Uwe; Seume, Jörg R.; Friedrichs, Jens; Dinkelacker, Friedrich (Basel : MDPI AG, 2018)
    With the growth of aviation traffic and the demand for emission reduction, alternative fuels like the so-called electrofuels could comprise a sustainable solution. Electrofuels are understood as those that use renewable ...
  • Klett, Jan; Wolf, Thomas; Maier, Hans Jürgen; Hassel, Thomas (Basel : MDPI AG, 2020)
    The European standard ISO 3690 regulates the measurement of diffusible hydrogen in arc-welded metal. It was designed for different welding methods performed in dry atmosphere (20% humidity). Some details of the standard ...
  • Lehmann, E.; Grünzweig, C.; Jollet, S.; Kaiser, M.; Hansen, H.; Dinkelacker, Friedrich (Bristol : IOP Publishing Ltd., 2015)
    The injection process of diesel engines influences the pollutant emissions. The spray formation is significantly influenced by the internal flow of the injector. One of the key parameters here is the generation of cavitation ...