Energy saving method for cooling water circulation system

The invention discloses an energy-saving method for a cooling water circulation system. The energy-saving method comprises the following steps of: 10, acquiring configuration parameters of equipment related to the water circulation system and testing actual operating parameters of the equipment; 20, analyzing whether the current water supply capacity is reasonable according to test data, and optimizing and transforming parts of the system which have abnormal local resistance, water power unbalance, poor heat exchange effect of a heat exchanger, invalid flow of the equipment and unreasonable water supply pump matching; 30, preliminarily determining a multiple water supply pump operating mode; and 40, comparing with the multiple water supply pump operating mode determined in the step 30, and selecting a matching mode with the lowest energy consumption. By the method, system optimization is carried out according to actual production conditions of the system, a correct and economic operating mode can be provided through a form or a man-machine interface under the specific working conditions by using programs made in advance or the calculation process and results, common equipment managers can operate the method easily to fulfill the aims of saving energy and reducing consumption, and the use safety of the equipment is improved.