Fuel cell technology has enormous potential. In order to realize this potential, the sensitive cells have to be reliably protected. MANN+HUMMEL has now developed a cathode air cleaner to do just that.

Cell protection helps to prevent ageing and is essential where cells are exposed to extreme loads. This is true for biology and also true on our roads. Fuel cells work in a field where if they were unprotected they would soon age. Gases such as sulfur oxides (SO2), hydrogen sulfide (H2S) and ammonia (NH3) are able to damage the low-temperature proton exchange membrane of the fuel cell. Without protection irreversible damage can occur.

Custom development of proven solution

MANN+HUMMEL knows about the sensitivity of the fuel cell and has further developed an air cleaner from the ENTARON series especially for use in fuel cells. The catalog component which is usually equipped with a conventional filter element with a cellulose media is now fitted with a new activated carbon filter element. This allows the air cleaner to separate particles and also adsorb harmful gases in order to provide the best protection for the fuel cell. In comparison to conventional air cleaners, the media in the cathode air filter element is wound around a supporting grid instead of being pleated as before. This creates space for considerably more media in the same installation area and therefore increases the dust holding capacity and filtration performance. In addition to the standard component, the structure of the element can also be customized to specific customer requirements. A pleated activated carbon element is therefore also possible.

A further advantage is the quick availability resulting from the further development of a proven air cleaner system. The housing remains unchanged. The air cleaner is available as a single- or two-stage air cleaner and depending on the customer requirements can be fitted within a 360 degree range. For even greater cell protection an optional safety element made from a non-woven fabric is also available which ensures that the air on the clean side remains clean during service.