Hydrogen Fuel Cell Components and Atmospheric Carbon Capture Systems

Purem by Eberspaecher has introduced an expanded portfolio of fuel cell balance-of-plant components, hydrogen infrastructure hardware, and direct air capture technology. The product suite targets efficiency and thermal management across mobile fuel cell drivetrains, stationary generation plants, and industrial carbon-removal systems.

Balance-of-Plant Components for Cathode and Exhaust Gas Management
Fuel cell operation requires precise moisture and pressure control to maintain stack membrane durability and minimize visible exhaust emissions. To address moisture accumulation, a specialized De-Hydrator reduces water vapor concentrations in the cathode exhaust path, preventing condensation and reducing plume formation. This unit functions alongside a dedicated Water Separator that removes liquid water from the process gas, and an integrated Silencer engineered for intake and exhaust acoustic attenuation.

Stack protection is further supported by a Cathode Isolation Valve. This component provides a hermetic seal when the system is inactive, preventing ambient air ingress, membrane dehydration, and premature degradation. For oxidant delivery, oil-free regenerative side-channel compressors sourced through Eberspaecher Vairex provide high pressure ratios with low vibration levels, preventing hydrocarbon contamination within the catalyst layers.



The Cathode Isolation Valve from Purem by Eberspaecher hermetically seals the fuel cell stack.

Anode Recirculation and Hydrogen Production Infrastructure
To address stoichiometric utilization limits where fuel cells do not consume all supplied hydrogen in a single pass, an in-house Hydrogen Recirculation Blower continuously returns unreacted hydrogen from the stack outlet back to the inlet stream. This recirculation loop raises overall fuel efficiency and minimizes parasitic hydrogen venting.

Beyond system-level balance of plant, the manufacturing scope covers high-volume metallic components and high-pressure storage vessels designed for corrosive, high-temperature operating conditions. The engineering framework supports balance-of-plant scaling for high-temperature solid oxide electrolysis cells (SOEC), incorporating specialized flow routing and welding techniques to meet industrial hydrogen generation and storage requirements.

According to Avinash Mutharja, Executive Vice President of the Industrial Products Business Unit, the portfolio expansion targets hydrogen generation, transport, and storage, while advancing greenhouse gas reduction solutions such as direct air capture.



The concept for the Purem by Eberspaecher Direct Air Capture technology reactor.

Solid-Sorption Direct Air Capture and Digital Modeling
The company's Direct Air Capture system generates negative emissions by extracting carbon dioxide directly from ambient air streams. Process air passes through a chemical contactor containing solid sorption media that selectively bind carbon dioxide molecules. Upon bed saturation, the media undergoes thermal regeneration to release purified carbon dioxide gas, which is then routed toward underground geological storage or chemical utilization. An interactive digital dashboard accompanies the hardware, allowing plant operators to evaluate system efficiency, sorbent consumption, and levelized capture costs across variable geographic locations.

Additional Context
This section details technical specifications and competitive benchmarking not included in the original product announcement.

Fuel cell balance-of-plant components operate in direct competition with established fluid-handling suppliers, including Bosch, Pierburg, and Parker Hannifin. Side-channel and centrifugal compressors designed for fuel cell stacks typically target operating pressure ratios between 1.5 and 2.5 bar, where side-channel variants offer lower mechanical complexity and reduced pulsation at the expense of peak aerodynamic efficiency compared to high-speed centrifugal units.

In carbon capture, solid-sorbent direct air capture systems — such as those commercialized by Climeworks — rely on low-temperature desorption cycles (80°C to 120°C). This contrasts with liquid solvent direct air systems, such as aqueous potassium hydroxide processes, which require calcination temperatures exceeding 800°C. Solid-sorbent systems consume approximately 1.5 to 2.5 kWh of thermal energy per kilogram of captured carbon dioxide, making waste-heat integration a key performance benchmark for industrial viability.

Edited by Evgeny Churilov, Induportals Media - Adapted by AI.

www.eberspaecher.com