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Hollmann, Jan [Author]; Fuchs, Marco [Author]; Spieker, Carsten [Author]; Gardemann, Ulrich [Author]; Steffen, Michael [Author]; Luo, Xing [Author]; Kabelac, Stephan [Author]

System Simulation and Analysis of an LNG-Fueled SOFC System Using Additively Manufactured High Temperature Heat Exchangers - [published Version]

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  • Media type: E-Article; Text
  • Title: System Simulation and Analysis of an LNG-Fueled SOFC System Using Additively Manufactured High Temperature Heat Exchangers
  • Contributor: Hollmann, Jan [Author]; Fuchs, Marco [Author]; Spieker, Carsten [Author]; Gardemann, Ulrich [Author]; Steffen, Michael [Author]; Luo, Xing [Author]; Kabelac, Stephan [Author]
  • imprint: Basel : MDPI, 2022
  • Published in: Energies : open-access journal of related scientific research, technology development and studies in policy and management 15 (2022), Nr. 3 ; Energies : open-access journal of related scientific research, technology development and studies in policy and management
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/12947; https://doi.org/10.3390/en15030941
  • Keywords: Additively manufactured heat exchangers ; Anode off-gas recirculation ; Maritime application ; Steam reforming ; Solid oxide fuel cell ; Fuel cell system design
  • Origination:
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  • Description: A laboratory-scale solid oxide fuel cell (SOFC) system using liquefied natural gas (LNG) as a fuel is designed to be used as an energy converter on seagoing vessels (MultiSchIBZ project). The presented system design phase is supported by thermodynamic system simulation. As heat integration plays a crucial role with regard to fuel recirculation and endothermic pre-reforming, the heat exchanger and pre-reforming component models need to exhibit a high degree of accuracy throughout the entire operating range. Compact additively manufactured tube-bundle and plate-fin heat exchangers are designed to achieve high heat exchange efficiencies at low pressure losses. Their heat transfer correlations are derived from experimental component tests under operating conditions. A simulation study utilizing these heat exchanger characteristics is carried out for four configuration variants of pre-reforming and heat integration. Their system behaviour is analyzed with regard to the degree of pre-reforming and the outlet temperature of the fuel processing module. The combination of allothermal pre-reforming with additively manufactured plate-fin heat exchangers exhibits the best heat integration performance at nominal full load and yields a partial load capability to up to 60% electrical load at net electrical efficiencies of 58 to 60% (LHV). © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
  • Access State: Open Access
  • Rights information: Attribution (CC BY)