How to clean and maintain closed cooling tower -- HuaTal Cooling Tower

The circulating cooling water of closed cooling tower after long term use, the water evaporation, leading to higher concentration of the impurity contents in the water, the breeding of microorganism, etc., can cause internal scaling on the surface of the coil pipes. Also water retaining plate and closed cooling tower outer plate will be covered with many impurity, which will reduces the cooling efficiency, and cprride the equipment, reduce the service life of closed cooling tower.

1. Scaling influence the heat dissipation of closed cooling tower

   1. Reduce heat transfer efficiency: The heat transfer process of closed cooling tower is mainly did by the contacting of spried water and the coil pipes. The rejected heat will be fully transferred to the outer air and spraied water if there is no scaling inside the coil pipes. If the scaling is serious, the rejected heat have to pass through the scaling first, then did heat transfer process with the outer air and water, due to the scaling heat exchange efficiency is very slow, it will affect industrial production.

   2. Scaling corrosion: if the coil pipes were affected by scaling for long time, which will not only affect the heat transfer efficiency, but also corrode the stainless steel tubes or copper tubes. According our data, the corrosion rate can be doubled if the coil pipes have scaling.

   3. Microbial corrode outer shell of closed cooling tower: Long-term growth of microorganisms will gradually cover the inner wall of the closed cooling tower, not only difficult to clean, but also produce weak acid corrosion of the inner shell.

   
   

   

2. How to clean impurities of closed cooling tower

   1. Scale cleaning: The best way to clean up scaling is through the neutralization of dilute hydrochloric acid. Neutralization reaction occurs in calcium of hydrochloric acid and scale, and wash it with water. Local thicker scale, can used higher concentration of hydrochloric acid to clean.

   2. Biological slime cleaning: The temperature inside the closed cooling tower is relatively high, the growth of microorganisms will be fast, and the quantity will be large, the reproduction speed is fast. So we should treat it by adding drugs to the water system, and we should make it clear and thorough, otherwise, it will easily reproduce again in a short time.

   3. Impurities: During daily operation, a small amount of dust and other impurities will mix into the cooling water and condense at the bottom. The substance can be washed with clean water.

Hope our suggestions above will help closed cooling tower users all over the world. Thanks to all.