Busch Vacuum Solutions, a global manufacturer of industrial vacuum pumps, blowers and compressors, has launched the first TÜV-certified hydrogen recirculation blower for fuel cells.
The Mink MH 0018 A hydrogen recirculation blower ensures optimum recirculation of hydrogen within fuel cells with a performance of up to 45 kW and can be used at a lower recirculation rate for fuel cells with up to 60 kW. It has been specially developed for the recirculation of excess hydrogen in fuel cells. The small dimensions allow the blower to be installed in the fuel cell module, while even two blowers can be operated parallel for larger fuel cells.
SGS-TÜV Saar GmbH has certified the blower after testing under extreme temperature conditions in a continuous operation test as well as material corrosion tests. The certification also confirms a low leak rate of a maximum of 10 standard cm3/hour. The hydrogen recirculation blower can be operated at hydrogen temperatures between -30 to +85 C. It is suitable for transportation (automotive, rail, maritime, aviation) and stationary cell modules such as electricity generation applications.
The blower also operates with an intelligent variable speed drive and automatically adjusts the volume flow to the actual fuel cell requirements, thus achieving the highest possible efficiency. The blower employs the claw compression principle, which has been in use in many applications since Busch launched it in the 90s. The internal compression process is oil-free and contactless.
The compression is contact-free and completely dry, implying that no operating fluids are involved in the compression chamber. Given that none of the compressors’ internal moving parts come in contact with each other, the parts are not subject to wear and service.