Wiki - All about hydrogen

Updated on 30 May 2024

Hydrogen storage system design and manufacturing

GRZ Technologies builds metal hydride hydrogen storage modules according to a patented design on its own production lines. The design of the DASH storage is characterized by a high degree of modularity, outstanding technical properties, and excellent quality.

The basic component of each storage module is the application-specific and optimized hydrogen carrier
material. The material selection and the quality control of the used materials are the responsibility of
our team of material scientists. Specialized measurement devices developed by GRZ Technologies are
used for the necessary characterization and quality control.

The storage material is then inserted into optimized stainless-steel containers (e.g., made of AISI 304L
). The smallest unit in the modular design used for this is the cell. Depending on the technical requirements, the cells are manufactured with different diameters and lengths. Registers are made
from individual cells, which in turn are connected to so-called stacks. Each stack is a pressure device
certified made according to the EU Pressure Equipment Directive 2014/68/EU or another applicable standard. The figure below shows a typical stack (M-series):


GRZ Technologies uses specially optimized welding processes to manufacture the storages. Thereby, particular attention is paid to high quality and repeatability of the process. The objective is to reach a very long service life. For our customers, this means that the storage systems do not limit the lifespan of the projects and can be operated practically maintenance-free over the entire service life. After completion, each stack undergoes specifically developed quality control procedures in which the pressure resistance and tightness are quantitatively tested. Once they have successfully passed the strict quality control processes, the stacks are then loaded with hydrogen. Finally, the stacks are combined into a system with the storage capacity required by the customer. Depending on the requirements, auxiliary systems are now installed to achieve the desired heat exchange.

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