World premiere for the new hydrogen recirculation blower from ZF

Fuel cell turbo World premiere for the new hydrogen recirculation blower from ZF

2024-10-01 Source: ZF | Translated by AI 1 min Reading Time

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The innovation for e-mobility was developed by ZF to optimize the hydrogen content of fuel cell vehicles, thus optimizing consumption and performance.

This is the ZF world premiere at the IAA in Munich! The so-called hydrogen recirculation blower (left) is actually the turbo to optimally supply fuel cell vehicles. It works together with ZF's electric air compressor (right).(Image: ZF) — This is the ZF world premiere at the IAA in Munich! The so-called hydrogen recirculation blower (left) is actually the turbo to optimally supply fuel cell vehicles. It works together with ZF's electric air compressor (right).
(Image: ZF)

The ZF hydrogen recirculation blower works in conjunction with the high-speed air compressor from ZF. The latter supplies air to the fuel cell stack to enhance the chemical reaction between hydrogen and oxygen. It uses high-speed technology, which increases efficiency. Together, these systems form part of ZF's growing Full-Flex E-Mobility portfolio, aimed at more efficient operation of fuel cell systems in commercial vehicles. Like the fuel cell air compressor, the innovative recirculation blower is also designed for durability. It matches the expected lifespan of the commercial vehicle, which in turn contributes to lowering the total cost of ownership (TCO). Hydrogen recirculation is crucial for the longevity and efficiency of the fuel cell stack.

ZF-H₂ recirculation system saves on active cooling system

ZF describes the hydrogen recirculation blower as compact, lightweight, and optimized for efficiency. Its high-speed turbo can reach up to 100,000 revolutions per minute and employs air bearing technology. This reduces the need for lubrication and prevents contamination of the fuel cell stack, as ZF explains. This permanently ensures an optimal efficiency and high mass flows. Additionally, the system features an integrated inverter that supports 800-volt high-voltage systems. ZF’s industry-leading idea in hydrogen recirculation also ensures efficient management of water and inert gases in the anode path. It uses so-called media-gap electric motors, incorporates water cooling, allows for variable gas compositions, and makes active cooling obsolete. Naturally, this reduces the number of components, thereby simplifying the system's complexity and facilitating assembly.

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