The latest portfolio expansion from Purem by Eberspächer is the De-Hydrator for water management. It reduces the moisture content in the exhaust air of fuel cell systems, thereby decreasing visible steam formation. The component complements the modular exhaust system consisting of a water separator (which removes water from the cathode path) and a silencer for intake and exhaust systems of fuel cell vehicles and systems. It is also intended to improve operational safety.
The second focus topic is the Direct-Air-Capture system for separating CO2 from ambient air. The ambient air is passed through a reactor with solid sorption media, to which the CO2 molecules adhere. Once the media are saturated, they are heated; the CO2 is released in gaseous form and collected. It can then be stored (Carbon Capture Storage) or used as a raw material (Carbon Capture Utilization). At the booth, visitors can evaluate the efficiency and costs of future DAC plants based on location and absorber material via an interactive digital dashboard.
Overview of other Balance-of-Plant components
Balance-of-Plant components are peripheral parts around the actual fuel cell stack that are important for the function of the overall system.
Cathode Isolation Valve: The Cathode Isolation Valve hermetically seals the cathode path and is intended to protect the stack from leaks and premature aging.
Regenerative Air Compressors: The oil-free side channel blowers from Eberspächer Vairex operate, according to the manufacturer, with optimized pressure ratios, low vibration, and high efficiency.
Hydrogen Recirculation Blower (HRB): The HRB is an in-house development for hydrogen recirculation. Since a portion of the supplied gas in fuel cells is not immediately converted, the blower continuously returns the remaining portion to the supply path. This increases fuel utilization and reduces hydrogen losses.
Pressure Vessels and High-Temperature Electrolysis
For the industrial side of the hydrogen value chain, the company refers to its experience in industrializing complex systems. Purem industrializes mass-production-capable pressure vessels and other metallic components. The work on hydrogen production mainly concerns high-temperature electrolysis (SOEC), where steam is split in a solid oxide cell at high temperatures. This includes components and pressure vessels for storage. According to the company, expertise is brought in flow management, high-temperature applications, welding processes, and the handling of corrosive media.
This contribution is part of the H2international Travel Guide for the Hydrogen Technology World Expo and Conference. More trade fair tips are available on the following channels:
- in the H2international newsletter on October 13, 2026. Free registration here.
- in the H2international webinar on October 14, 2026. Free registration here.
