Kind and usage of corrosion inhibitor - heating and cooling water for air-conditioning facility

摘要

We reported the kind, the feature and use method of corrosion inhibitor ingredients, which are used in cooling water or heating and cooling water for air conditioning system. Nitrite, molybdate, phosphates, silicates, chromate, zinc salts, phosphonates and azoles, which are popular corrosion inhibitor ingredients were explained. Moreover, about the water treatment chemicals, which are marketed in present Japan, the function, the ingredient, and the concentration control method were explained.