Water cooling system and air separation device provided with same

Abstract

A water cooling system may include a compressed air cooler for cooling compressed air, a wet-type water cooler into which condensed water generated by the compressed air cooler is introduced as makeup water, a cooling water pump which sends the cooling water discharged from the wet-type water cooler to a cold end of the compressed air cooler to cool the compressed air by the cooling water, a dry-type water cooler for cooling warm water discharged from a warm end of the compressed air cooler, and a first flow rate regulating valve for regulating the flow rate of the condensed water.

What is claimed is: 
     
         1 . A water cooling system comprising:
 a compressed gas cooler configured to cool compressed gas compressed by a compressor that takes in a gas being processed;   a wet-type water cooler into which condensed water generated in the compressed gas cooler is introduced as makeup water;   a cooling water pump configured to send cooling water discharged from the wet-type water cooler to a cold end of the compressed gas cooler to cool the compressed gas by means of the cooling water;   a dry-type water cooler configured to cool the cooling water discharged from a warm end of the compressed gas cooler;   a first condensed water line pipe configured to send condensed water discharged from the compressed gas cooler; and   a first flow rate regulating valve provided in the first condensed water line pipe that is configured to regulate a flow rate of the condensed water.   
     
     
         2 . The water cooling system according to  claim 1 , further comprising a cooling water line pipe configured to send the cooling water discharged from the wet-type water cooler to the cold end of the compressed air cooler, wherein the cooling water line pipe is further configured to send the cooling water from the warm end of the compressed air cooler to the dry-type water cooler, and wherein the cooling water line pipe is further configured to send the discharged cooling water to the wet-type water cooler. 
     
     
         3 . The water cooling system according to  claim 1 , further comprising a water buffer for storing the condensed water. 
     
     
         4 . The water cooling system according to  claim 1 , further comprising:
 a second condensed water line pipe configured to send condensed water from the water buffer to the wet-type water cooler; and   a second flow rate regulating valve provided in the second condensed water line pipe that is configured to regulate the flow rate of the condensed water.   
     
     
         5 . The water cooling system according to  claim 1 , further comprising a first control unit configured to control the first flow rate regulating valve to control the amount of condensed water supplied. 
     
     
         6 . The water cooling system according to  claim 4 , further comprising a first control unit that controls the second flow rate regulating valve to control the amount of condensed water supplied. 
     
     
         7 . The water cooling system according to  claim 1 , further comprising a second control unit configured to control an operation rate of the dry-type water cooler in accordance with an increase or decrease in the cost of electric power. 
     
     
         8 . An air separation device provided with the water cooling system according to  claim 1 .