Purem by Eberspaecher Offers Fuel Cell Solutions

Fuel cells are capable of generating electrical energy through a chemical process involving the supply of hydrogen and oxygen to the so-called stack. To ensure the optimal utilization of hydrogen, Purem by Eberspaecher is developing the Hydrogen Recirculation Blower (HRB). This recirculation blower minimizes hydrogen losses, as only around 80 percent of the energy source fed into the stack is converted during the chemical process. The HRB ensures the continuous recirculation of hydrogen back into the supply path, which increases fuel utilization. The exhaust technology experts’ in-house development is based on the Eberspaecher VAIREX air recirculation blower and utilizes side channel compressor technology. Purem by Eberspaecher has adapted the existing product to meet the high requirements for impermeableness when used with hydrogen. In order to optimize the alloys and materials used for the alternative energy source, expertise in materials science was incorporated into the development process. Initial practical tests with customers are scheduled to begin at the end of 2025, with production of the HRB planned to commence in 2027.

Modular exhaust air system for fuel cell systems
Efficient water management and compliance with applicable noise emission regulations: The Purem by Eberspaecher exhaust air system for fuel cells can be configured from several individual components to form a complete system. The production of water steam is a by-product of the chemical process that generates energy from hydrogen and oxygen. This steam must be removed from the fuel cell system. The exhaust gas specialist's specially developed water separators are designed for high mass flows by ensuring low back pressure and high separation efficiency. To reduce noise emissions, Purem by Eberspaecher offers silencers that are designed for the intake and exhaust systems of fuel cell vehicles and are resistant to high humidity and water condensation.




Efficient balance of plant components
Purem by Eberspaecher offers production-ready balance of plant components for fuel cell systems based on valve technology from exhaust technology. The Gas Control Valve optimizes the whole system by safely controlling air flow and pressure. This compactly designed component can be used as either a bypass or throttle valve. The Cathode Isolation Valve hermetically seals the cathode path to protect it against leakage, preventing premature aging. The product is designed for a variety of applications thanks to its suitable materials and customer-specific connections.

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