Recovery system of heat energy in a fuel cell system
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United States of America Patent
Stats
-
Feb 17, 2004
Grant Date -
Jun 27, 2002
app pub date -
Dec 21, 2001
filing date -
Dec 22, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fuel cell system 1 comprises a fuel cell stack 10, an evaporator 21, a reforming device 22, a supercharger 23, an offgas heating device 24, and a catalytic combustion chamber 25. Offgas exhausted from the fuel cell stack 10 is burnt in the catalytic combustion chamber 25, and the burnt offgas is introduced to the evaporator 21 to be heat exchanged with a reforming raw fuel and reforming air. The burnt offgas cooled by means of the heat exchange is introduced to the offgas heating device 24, to be used as a heat source for heating the offgas exhausted from the fuel cell stack 10. The offgas can be heated by the burnt offgas, and the moisture in the offgas can be vaporized and introduced to the catalytic combustion chamber 25.
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