Fuel cells require a constant supply of clean air to function properly. Air compressors/blowers are used to force air into the fuel cell stack - where the cell uses oxygen from the air to enable the reaction in the cathode. This means that there are special requirements for fuel cells in terms of air supply. To ensure long life and high performance, the intake air must be very effectively cleaned of particles in the outside air.
Protection from harmful gases and particles
In addition, pollutants such as nitrogen oxides (NOx), ammonia (NH3) and sulfur oxide (SO2) can cause unwanted deposits in the fuel cell and damage it. We use a specially formulated carbon layer to trap these and other harmful gases. Hengst's cathode air filter systems generally have a multi-layer structure. Each layer is optimized for a specific task, so that the complete system offers reliable protection against all harmful particles and gases in the intake air when all filter stages work together.
Cathode air filter Blue.netic – Your customer benefit at a glance:
Perfect protection of NT-PEM fuel cells
High performance gas filter for fuel cell harming gases (SO2, NH3, NOx, VOC's)
Benchmark ammonia (NH3) adsorption
SO2 optimized filters available
Particle filtration separation efficiency >98 % @0,2 µm
Modular design of the cathode air filter systems
The cathode air filter systems from Hengst have a multi-layer structure. Each layer is optimized for a specific task, so that the complete system offers reliable protection against all harmful particles and gases in the intake air when all filter stages work together. Thanks to a high degree of modularization, all requirements for the various applications worldwide can be met from a uniform technology kit. This results in the shortest possible development and application times, increases robustness and durability through the use of tried and tested, coordinated modules, and makes the use of the components particularly economical over their lifetime. The range of applications covered by Hengst cathode air filters extends from small fuel cells and mobile systems in the on- and off-highway segment to large systems for stationary power generation and for ships.