Speaker
Description
Energy from hydrogen is an appropriate technological choice in the context of sustainable development and for a future CO2-neutral society. Within the framework of the national hydrogen lead projects, Karlsruhe Institute of Technology (KIT) is working with project partners of the technology platform "TransHyDE" in the lead project "AppLHy!" on the transport and application of liquid hydrogen (LH2). LH2 offers important advantages like its high purity, high energy density, storage at low pressure and the provision of a cryogenic temperature level that can be feasible for implementation in transportation applications.
Although austenitic steels have been implemented in LH2 direct contact for decades now, detailed microstructural and mechanical studies are still missing for 20 K/ that low temperature regime. With an austenitic LH2 vessel that has been in long-term condition with H2 exposure in the cryogenic regime as study model, a comprehensive study of the influence of gaseous H2 and LH2 on the micro and macro properties of the vessel were carried out. For a complete study and verification of the well-equipped H2 & LH2 facilities at KIT, a second short-term hydrogen exposure on the vessel has been carried out.
Within this contribution, the long-term results as well as the short-term exposure will be presented and discussed.
