HIGH EFFICIENT DEVICE COOLING SYSTEM AND COOLING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an energy saving type high efficient device cooling system and a cooling method in which the cooling system is made compact in size. SOLUTION: Each of a plurality of cooled items 111a, 111b and 111c is divided into groups 102, 103 and 104 for every cooling temperature regions. There is provided each of independent primary cooling water supplying pipes 110a, 110b and 110c for every group. Each of the primary cooling water supplying pipes is provided with heat exchangers 108a, 108b, 108c. A secondary cooling water supplying pipe 107 separate from the primary cooling water supplying pipe is arranged to pass in sequence through each of heat exchangers in an order of low temperature in the cooling temperature region.