The cooling water system often forms scales with very low thermal conductivity on the outer surface of the heat sink, water baffle, galvanized pipe, and galvanized sheet due to the reproduction of microorganisms, medium deposition, and corrosion of the substrate, which affects the heat exchange efficiency and service life of the equipment.

The evaporative condenser is an advanced condensing galvanizing equipment. It is not allowed to damage the galvanized layer during cleaning. The corrosion inhibition efficiency is 100%. It is a cleaning project with high technical content. In order to provide users with a deeper understanding of the related issues of cooling water circulation system cleaning, and to better serve users and solve the problem of equipment fouling faced by users, the contents of the cleaning of cooling water circulation system are introduced as follows:

The harm of scaling in cooling water system and the necessity of cleaning

The hazards caused by scaling in the cooling water system are mainly manifested in the following two aspects:

1. Decrease in heat exchange efficiency

The thermal conductivity of fouling in the cooling water system is very low, generally -1, h-1, k-1, while the thermal conductivity of steel is 40-50 Kalm-1, h-1, k-1, which is the thermal conductivity of fouling It is hundreds or even thousands times lower than the heat exchange material, and it is difficult to achieve the cooling effect in severe cases.

2. Damage the service life of the equipment

The equipment runs with scale for a long time, it is very easy to produce corrosion under scale, which damages the body of the evaporative condenser, and its corrosion rate is many times larger than that when there is no scale. Depending on the pH value of the medium, the temperature and external conditions, the corrosion form and the corrosion rate are different. Among them, the most harmful intergranular corrosion, selective corrosion, stress corrosion, pitting corrosion, etc. can cause the system to rupture or perforate, which will cause serious losses. It can be seen from the above hazards that it is very necessary to remove the system fouling. For the circulating cooling water system, cleaning has become an indispensable and important supporting technology.