| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method and a program of a supply amount of nitrogen for cooling capable of solving shortage of nitrogen and suppressing oxygen diffusion, even in a case where a use amount of nitrogen increases or the increase is expected.SOLUTION: A control method for a supply amount of nitrogen for cooling has: a nitrogen use amount increase step of acquiring information that a use amount of nitrogen increases or the increase is expected; a cooling tower inlet temperature determination step of determining whether or not a water washing cooling tower inlet temperature is below an inlet temperature limit set in advance; a flow rate control valve throttling step of throttling an opening of a flow rate control valve so as to reduce a supply amount of the nitrogen for cooling; a nitrogen for cooling diversion amount and a nitrogen shortage amount determination step of determining whether or not a nitrogen for cooling diversion amount provided by a reduced amount of the supply amount of the nitrogen for cooling has reached a nitrogen shortage amount; a refrigerator load increase step of increasing a load of a refrigerator; and a refrigerator load Max determination step of determining whether or not the refrigerator load has become 100%. |
