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Fuel cell systems have been demonstrated in auxiliary power
unit (APU) applications in heavy-duty and passenger
vehicles.
APUs may be used to power onboard electronic systems such
as lights, stereo, and climate control and onboard appliances
such as cab heaters, air conditioners, onboard computers,
televisions, stereos, refrigerators, microwave ovens, and
coffee pots.
There is increasing interest in using APUs in cars and
trucks to meet the growing demand for electricity on board
vehicles.
Freightliner Truck, Hydrogen, 5
kW
In July 2000, truck manufacturer Freightliner LLC
showed a heavy-duty demonstration truck that uses a
Ballard® fuel cell auxiliary power unit to generate
electrical power for onboard vehicle appliances.
Mercedes S-Class, Hydrogen, 3
kW
In October 1999, DaimlerChrysler demonstrated a
three kilowatt Ballard® fuel cell auxiliary power
unit installed in the trunk of a Mercedes S-class
sedan.
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