| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold water circulation device capable of reducing the maintenance cost by enabling an effective water quality management for both primary cooling water and secondary cooling water. SOLUTION: This cold water circulation device 10 comprises an evaporator 11 for feeding secondary cooling water by evaporation cooling, a cooling water circulation pump 13 set on the secondary cooling water side of the evaporator 10 to circulate cooling water to a metal mold temperature adjusting machine 50, a pure water device 12 for making the secondary cold water-side cooling water to pure water, a deoxidation device 15 for removing dissolved oxygen from the secondary cold water-side cooling water, and an air-cooled refrigerating cooler 16 for cooling the evaporator 11. COPYRIGHT: (C)2004,JPO
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