| 摘要 |
PROBLEM TO BE SOLVED: To suppress variation in a header pressure due to backup combustion of a boiler group in which a continuous control boiler is added to a stage value control boiler group, and to enhance pressure stability.SOLUTION: A boiler system 1 includes: a boiler group 2 in which a continuous control boiler 20B is added to a stage value control boiler group; and a control unit 4 for controlling a combustion state of the boiler group 2. The control unit 4 determines that the continuous control boiler 20B exists in a boiler capable of performing back-up by a first determination unit 41, and performs a back-up instruction for increasing a combustion amount which coincides with a back-up steam amount calculated by a back-up request amount calculation unit 42 with respect to the continuous control boiler 20B. The continuous control boiler 20B which has received the back-up instruction outputs the back-up steam amount by changing a combustion rate on the basis of the instructed combustion amount.SELECTED DRAWING: Figure 1 |
