Environmental Engineering Reference
In-Depth Information
hours and hours of use?
Miniature fuel cells could
power everything from
watches to hearing aids.
Hydrogen fuel cell
power packs for television
cameras are already being
tested in the United States
and Europe. Television
cameras usually run on
batteries, which eventually
run out of power. The fuel
cell system, though, could
produce almost continuous
electricity. A two-pound
(one-kilogram) hydrogen
canister would allow the
camera to run for up to four
or ive hours. In contrast,
a regular rechargeable battery powers the camera for only two
hours before the battery needs to be changed or recharged.
Emergency hydrogen fuel cells could also be used as backup
power in a home during an electrical outage. The fuel cell
would provide enough electricity for hours to power telephones,
radios, and emergency lights. This would be of great use to
ireighters, police, and emergency response teams of all kinds.
A system for producing hydrogen from algae.
Fuel Cells in the Air
Commercial aircraft produce a great deal of pollution when
they burn fuel while lying. In July 2009, Germany tested
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