| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler system capable of improving pressure stability without repeating start and stop of a boiler.SOLUTION: A boiler system 1 includes a boiler group 2 having a plurality of boilers 20 capable of burning with continuously changing a load factor, and a control section 4 for controlling a combustion state of the boiler group 2 according to a demand load. The control section 4 increases the number of the boilers 20 burning when a necessary steam amount required in accordance with the demand load exceeds an increase reference steam amount. At that time, the increase reference steam amount is set by adding an increase hysteresis to a stop reference steam amount as a reference for stopping combustion of one of the boilers 20 in the combustion state, and thus, the boiler 20 is prevented from stopping just after increase of the number of the boilers 20. |
