| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a boiler system which can be operated in the state of satisfactory efficiency in the boiler system allowing boilers having different volumes and efficiency characteristics to be mixed therein.SOLUTION: A boiler system 1 comprises: a boiler group 2 provided with a plurality of boilers 20; and a control part 4 which controls combustion state of the boiler group 2. In the boilers 20, a plurality of operation zones are individually preset corresponding to ranges of predetermined load rate respectively on the plurality of boilers 20, and the control part 4 includes a first increase selection part 451 which selects a boiler located on an operation zone corresponding to the range of the lowest load rate among the plurality of operation zones when the required vaporization amount is larger than an output vaporization amount, a first decrease selection part 461 which selects a boiler located on an operation zone corresponding to the range of the highest load rate among the plurality of operation zones when the required vaporization amount is smaller than the output vaporization amount and an output control part 48 which increases or decreases a vapor amount of the selected boiler by a unit vapor amount part.</p> |
