| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel-cell cogeneration system having superior energy efficiency obtained by improving the exhaust heat recovery efficiency. <P>SOLUTION: The fuel-cell cogeneration system includes a fuel-cell stack 101; an anode off-gas piping 42 connected to a fuel gas internal passage 31; a cathode off-gas piping 44 connected to an oxidizer gas internal passage 32; an off cooling medium piping 52 connected to a cooling medium internal passage 33; and heat exchangers 103, 105 to exchange heat between the anode off-gas or cathode off-gas and a heat medium. The off-cooling medium piping 52 is provided so as to come into contact with at least one of the anode off-gas piping 42 and the cathode off-gas piping 44, or is provided inside the anode off-gas piping 42 and/or the cathode off-gas piping 44. <P>COPYRIGHT: (C)2011,JPO&INPIT |
