Chapter Nine

Fuel Cell System Design

A system is defined as a group of units, objects, or items so combined as to form a whole and to operate in unison. In the case of a fuel cell, the system includes all the components needed to operate a fuel cell stack and deliver electrical current. A fuel cell stack is obviously the heart of a fuel cell system; however, without the supporting equipment the stack itself would not be very useful. The fuel cell system typically involves the following subsystems:

• Oxidant supply (oxygen or air)

• Fuel supply (hydrogen or hydrogen rich gas)

• Heat management

• Water management

• Power conditioning

• Instrumentation and controls

Depending on the available or chosen fuel and oxidant, the fuel cell systems may be ...

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