| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of controlling a pure water supply system, by which even if total consumption of pure water varies at a use point, a load of a water supply pump is reduced, with energy consumption curtailed, and to provide a pure water supply system. Ž<P>SOLUTION: The method of controlling the pure water supply system 100 of the application example includes a third piping system 107 by which a part of pure water supplied from a water treatment device 104 to a use point is returned to an upstream side of a water pump 103, driving/controlling the water pump 103 so that a first pure water flow rate Q<SB>1</SB>is made constant as the flow rate of pure water supplied from the water treatment device 104, and also controlling a third pure water flow rate Q<SB>3</SB>in the third piping system 107 on the basis of unused pure water flow rate Q<SB>5</SB>. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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