| 摘要 |
PROBLEM TO BE SOLVED: To enhance an air removal function of a cooling water system in a fuel cell cogeneration system.SOLUTION: A fuel cell cogeneration system includes: a circulation path (10) through which cooling water (12) is circulated to a fuel cell (a fuel cell stack 8); a pump (a cooling water pump 20-1) that circulates the cooling water through the circulation path (10); and a control section (36) that, before the fuel cell starts to generate power, activates the pump so as to operate the pump intermittently and that varies output of the pump during the intermittent operation. Before or after the fuel cell starts to generate power, the control section (36) determines whether it is necessary to remove air from the cooling water. If air removal is necessary, the control section (36) operates the pump intermittently, and varies output of the pump during the intermittent operation. |
