Optimized design on water cooling system of CHMFL

The effectiveness of the technique of naturally stratified and the dispersible uniformity of the diffuser that is used in the conditions of large flow rate and large temperature difference has been verified. The thermocline in all these experiments is close to or less than 1m, which proves that the design of this octagonal diffuser is feasible. This optimized design of water cooling system is necessary for the long-term stable operation of the resistive magnet, and it will increase the capacity of chilled water storage and prolong the experiment time