Patent ID: 8682490
Filing Date: 2014-03-25
Classification: F01K,Y10T

Abstract:
1. A non-transitory storage medium storing a program which, when executed by a controller, causes the controller to control a boiler group including boilers each of which has a plurality of stepwise combustion positions, the program comprising: calculating a number of presently combustion shiftable boilers, a number of their combustion positions, or a gross evaporation quantity; calculating a deviation quantity between a set physical quantity and a present time physical quantity; calculating a ratio between the deviation quantity and a control width that corresponds to the set physical quantity; calculating combustion subject boilers and their combustion positions based on the number of the combustion shiftable boilers, the number of their combustion positions, or the gross evaporation quantity and the ratio; calculating the number of the presently combustion shiftable boilers and the number of their combustion positions; calculating a pressure deviation between a set pressure and a present time pressure; calculating a ratio of the pressure deviation with respect to a pressure control allowable width by dividing the pressure deviation by the pressure control allowable width; and calculating the combustion subject boilers and their combustion positions by multiplying the ratio and the number of combustion shiftable positions.