There are many types of plate coolers, and the scope of use varies. However, after the cooler is used for a long period of time, scaling will occur. To fundamentally solve the problem of cooler fouling, you need to first understand the causes of it. So what are the three major factors affecting the cooler fouling?
(1) The flow velocity of the fluid. In oil coolers, the effect of flow rate on fouling should be considered for fouling and erosion. Due to the increase of flow velocity, the ablation rate increases for all types of dirt, and the rate of dirt deposition is also more significant, so the growth rate of dirt decreases with the increase of flow velocity. However, in the actual operation of the oil cooler, the increase in flow rate will increase energy consumption. Therefore, the flow rate of the cooler is not as high as possible. It should be considered from both energy consumption and dirt.
(2) The temperature of the heat transfer wall. Temperature plays an important role in chemical reaction scaling and salt crystallization scaling. An increase in fluid temperature generally leads to an increase in the chemical reaction rate and crystallization rate, which affects the amount of scale deposition, resulting in an increase in scale growth high.
(3) Heat exchange surface material and surface quality. Commonly used carbon steel and stainless steel are sometimes corroded, thereby depositing scale. If the material with better corrosion resistance is selected, the generation of dirt will be less, and the quality of the surface of the material will affect the formation of dirt. The greater the roughness of the surface, the easier it is to produce dirt.