Speaker
Description
Hydrogen is increasingly considered a key energy carrier for the transition to sustainable energy systems. However, large-scale transport and storage remain major technical challenges. For seasonal energy storage, underground solutions such as salt caverns or saline aquifers are viable, while for daily intermittency, above-ground cryogenic tanks are required. The storage volumes needed for these tanks far exceed the size of the largest liquid hydrogen tanks ever built, such as those developed by NASA for space applications.
In these tanks, hydrogen is stored as a cryogenic liquid at extremely low temperatures (20 Kelvin), which demands advanced thermal insulation systems to minimize heat ingress and prevent excessive boil-off. Conventional designs rely on high vacuum insulation, but this approach becomes impractical for very large tanks due to structural and mechanical constraints.
To overcome these structural constraints and reduce the cost of LH2 storage, Shell and CB&I have developed a non-vacuum insulation concept. A key challenge in the design of the non-vacuum insulation material is the proof of its mechanical integrity under the thermally induced stress for various geometries.
The mechanical performance of the insulation material will be assessed in ANSYS Mechanical and the predicted stress states and points of failure will be compared with lab-scale insulation material testing results down to 20K. These simulations will identify critical design features and provide insights into the combined thermal and mechanical behaviour of the insulation system under cryogenic conditions.
| Country | The Netherlands |
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