"Now that the weather is hot and the temperature is rising, many electroplating and oxidation companies have received inquiries from their shops about the need for water chillers. Many customers are confused when purchasing water chillers for electroplating and oxidation. It is obvious that the liquids in the electroplating and oxidation industry must be corrosive. If the liquid is directly fed into the water chiller, even using corrosion-resistant titanium pipes, the cost increases significantly, and over time, there will be significant damage to the equipment.", When the concentration of the solution exceeds 20%, it will seriously affect the service life of the chiller. What better way to solve this problem? Daheda Machinery reminds you that there are two ways to do this:
The refrigeration principle of water cooled indirect cooling in the electroplating (oxidation) industry: The water in the bottom basin of the cooling tower is transferred to the condenser of the water chiller through a water pump to cool the condenser. When flowing back into the cooling tower for spraying, the water is cooled by a fan on the top of the cooling tower, and then flows back to the bottom basin of the cooling tower. This cycle of operation continues. The condenser dissipates heat while the refrigerant inside is liquefied, and then flows into the evaporator in the water tank for evaporation. During evaporation, heat is absorbed, which cools the water in the water tank. The cooled water is pumped to a heat exchanger (separated by water and sulfuric acid), Through the process of heat transfer, the sulfuric acid is cooled, which is a cyclic process. The advantage of this product is that it is easy to install, has a slightly longer service life than the direct cooling method, and is not prone to corrosion by acids and alkalis. However, its disadvantages are that the cooling speed is slow, and the temperature has a slight error. Often, when selecting a model, it requires a larger configuration than the water cooled direct cooling model.
The refrigeration principle of water cooled direct cooling in the electroplating (oxidation) industry: The water from the bottom basin of the cooling tower is pumped to the condenser of the water chiller to cool the condenser, and then flows back to the cooling tower for spraying. When the water is cooled by the fan on the top of the cooling tower, it flows back to the bottom basin of the cooling tower, which is a cycle of operation The refrigerant inside the condenser is liquefied while dissipating heat from the condenser, and then flows into the evaporator for evaporation. During evaporation, heat is absorbed, which cools the sulfuric acid (tank liquid) delivered by the acid base pump in the evaporator. After cooling, the sulfuric acid returns to the electroplating (oxidation) tank, which is a cyclic process. This product has the advantages of fast cooling and stable temperature. It is made of strong acid and alkali resistant materials. It can accurately control electroplating solutions with different temperature requirements, thereby ensuring the best plating quality.
To sum up, direct cooling and indirect cooling of water chillers have the same use effect, with the difference in the stability and speed of direct and indirect cooling temperatures, the choice of model size, the different configuration of model materials, and their service life. However, it is obvious that both direct and indirect cooling water chillers require daily maintenance and maintenance to extend the service life of the water chiller, although the materials of the two are different, However, when equipped with an electroplating oxidation tank, indirect cooling water chillers are often larger than direct cooling water chillers, so the price difference is not much. Direct cooling water chillers are stable and fast in temperature, while ensuring optimal electroplating quality. Indirect cooling water chillers are slow in cooling and have slight temperature errors. From a production perspective, it is recommended to use a direct cooling chiller rather than an indirect cooling chiller, which is more practical.