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-BASF components show potential for new applications in airplanes- |
Stuttgart--Yesterday
evening (09/30/08) at the Stuttgart airport, the German Aerospace Center
(DLR) presented the first manned airplane that can take-off and fly exclusively
with a fuel cell. The innovative fuel cell, based on a high temperature
polymer electrolyte membrane (PEM), generates power for the electric engine
of the motor glider Antares DLR-H2. The aim of the project is to evaluate
the potential of the technology for future applications in commercial aircraft.
In airplanes on ground, turbines or ancillary aggregates generate the energy for air conditioning. During flight, a part of the energy generated in the main turbines is used for a variety of electrical applications as well as for air conditioning. In the future, fuel cells could be an environmentally sound and energy efficient alternative for an aircraft’s electrical requirements. As an auxiliary power supply, a fuel cell would generate electrical power, heat and even potable water for on-board usage. Thus, fuel cells would help reduce weight and electrical power failure risk as several distributed fuel cells replace the turbine generators. For the foreseeable future fuel cells are not expected to be used for large commercial aircraft propulsion.
Before being adapted for aircraft, however, the technology needs further development and testing. The DLR is a leading partner for the aircraft industry for this effort. First results from the DLR testing demonstrate excellent performance of the high temperature PEM fuel cells even under difficult low pressure conditions. This technology is based on Celtec®-membrane electrode assemblies (MEA) by BASF, a technology easily integrated into aircraft auxiliary power fuel cells.
Three partners are cooperating in
the evaluation of the high temperature PEM fuel cell: BASF, as manufacturer
of the only commercial membrane electrode assembly for this fuel cell type;
the
Danish company Serenergy A/S, supplier
of the compact, air-cooled stack; and, DLR, responsible for the integration
of the stack in the fuel cell system and subsequently in the airplane.
DLR will also conduct the testing according to the special requirements
of aviation.
High temperature PEM fuel cells operate at 120 to 180°C, need no humidification, require only a simple cooling system, offer a broad operating window and tolerate impurities in the hydrogen fuel gas. The latter characteristic is especially important if, in the future, impure hydrogen is sourced from jet fuel reformation on board the aircraft.
About BASF Fuel Cell GmbH
BASF Fuel Cell GmbH is a leading
supplier of catalysts, gas diffusion electrodes and membrane electrode
assemblies (MEAs) for polymer electrolyte membrane (PEM) fuel cells, direct
methanol fuel cells and reformers. BASF Fuel Cell is the only commercial
supplier of high temperature MEAs, marketed under the brand Celtec®.
The ELAT™ product line markets gas diffusion materials; the LT-MEA product
line MEAs for low temperature PEMFC and DMFC; and the Selectra® product
line catalysts for reformers and fuel cells. BASF Fuel Cell continues the
fuel cell activities of BASF, Engelhard and PEMEAS. For further information
go to www.basf-fuelcell.com/en.
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