| Undersea and aboard ship
There has been considerable interest in fuel cells for marine applications, both undersea and shipboard. UTC Power has played a leading role in development and demonstration programs.
The 1980's brought the design and delivery of a complete 30 kW fuel cell power system to the U.S. Navy for the Lockheed Deep Quest vehicle. The alkaline (KOH) electrolyte fuel cell was packaged in a pressure-tight containment vessel, which also served as a heat exchanger. Hydrogen and oxygen were provided from pressurized gas tanks.
The system was operated for several years, at depths of over 5,000 feet. The early 1990's brought the development and demonstration of a 10 kW prototype unit for a Navy unmanned undersea vehicle; this unit used the proton exchange membrane (PEM) technology.

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