| 摘要 |
PROBLEM TO BE SOLVED: To enhance the using efficiency of energy by efficiently accumulating heat necessary for a heat accumulating device for storing hot water produced by waste heat of a fuel cell power generation device and avoiding the continuation of the power generation generating excessive exhaust that in a state where the accumulated heat reaches the maximum heat accumulation. SOLUTION: A heat exchanger 10 is provided in a hot water tank 9 for accumulating exhaust heat of a fuel cell 1, and a pipe 11 feeding a medium for recovering the exhaust heat of the fuel cell 1 to the heat exchanger 11 is disposed so as to form a closed loop. A water feed pipe 13 and a hot water feed pipe 14 are connected to the bottom and the top of the hot water tank 9, respectively. A plurality of temperature sensors 17-20 are provided in the hot water tank 9 and the water feed pipe 13 is equipped with a temperature sensor 21. A control device 23 calculates the heat accumulation in the hot water tank 9 based on the detection signals of the respective temperature sensors 17-21 and, when the accumulated heat reaches the maximum heat accumulation, the control device controls the power generator 5 to stop the generation of the fuel cell 1. |
