FUEL CELL SYSTEM

• Main Authors: RYOO, SUNG NAM, HEO, SEONG GEUN
• Format: Patent
• Language: English
• Published: 12.06.2007
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A fuel cell system is provided to prevent a cavitation phenomenon to be generated when heated water is recovered into a water tank by heat-exchanging heat generated from a reforming unit with heat generated from a stack unit, followed by recovering heat-exchanged water into a water tank. The fuel cell system comprises: a reforming unit(200) which reacts fuel to generate hydrogen-rich gas; a stack unit which generates electric energy by an electrochemical reaction of the hydrogen-rich gas and air; a stack cooling unit having a first water tank(500) which stores cooling water for cooling the stack unit, and a first heat recovery pipe(510) of which one end is connected to the stack unit and the other end is connected with the first water tank(500) and in which cooling water flows; a heat recovery unit having a second water tank(600) which stores cooling water for recovering heat generated from the reforming unit(200), a second heat recovery pipe(610) of which one end is connected with the reforming unit(200) and the other end is connected with the second water tank(600) and in which cooling water flows, and a third heat recovery pipe(620) which is heat-exchanged with the cooling water flowing along the first heat recovery pipe(610); and a heat exchange unit which heat-exchanges the cooling water flowing along the third heat recovery pipe(620) with the cooling water flowing along the first heat recovery pipe(510).