Abstract: By analyzing the water temperature and water demand,a set of combined industrial circulating water cooling system with closed cooling tower as the main cooling source and chiller,chilled water tank and plate heat exchanger as the auxiliary cold source is designed. Compared with the traditional circulating water cooling system,the combined system has the characteristics of energy saving and stable operation,and has high engineering application and promotion value.

Key words: circulating water cooling system, cooling tower, auxiliary cooling source, energy saving