Why Has the Performance of the Finned Tube Heat Exchanger Deteriorated?

Finned tube heat exchanger is usually composed of a whole heat exchanger group by the partition, fins, seal, and guide piece, mainly heat is distributed to the air through the fin tube, and the equipment plays a role in controlling the temperature when the equipment temperature can not be effectively reduced to consider the finned tube heat exchanger problems.

Here is the content list:

• Poor heat dissipation

• Fouling

• Solutions

Poor heat dissipation

Finned tube heat exchanger due to long exposure to the outside, the external generation of a thick layer of oxide film, this layer of oxide film will prevent the evaporation of heat. The finned tube heat exchanger is not well placed in the environment, and there is a lot of dust, in the daily work of the usual fin tube heat exchanger constantly adsorbed dust and impurities in the air, the formation of a thick accumulation of ash. The finned tube heat exchanger receives pressure from other objects or is placed in a closed environment so that the heat cannot be effectively distributed. The finned tube seal for a long time when the aging phenomenon or the seal was broken by sharp objects, destroying the confinement of the heat circulation system, the finned tube heat exchanger is not working properly. All of the above are the reasons why the heat dissipation performance deteriorates after a long period of use.

Fouling

When used for a long time, the finned tube heat exchanger is prone to scaling. This is also the reason why the performance of the heat exchanger becomes worse. There are several reasons why scaling occurs. Fluid flow velocity affects heat exchanger fouling. The effect of flow velocity on fouling should be considered both in terms of its effect on fouling deposition and fouling stripping. For all types of fouling, the increase in the rate of stripping caused by the increase in flow rate is more significant than the rate of fouling deposition, so the growth rate of fouling decreases with the increase in flow rate. Heat exchange surface material and surface quality are also very important. In terms of the commonly used carbon and stainless steel, carbon steel is more likely to suffer from corrosion and thus scale and rust, so choosing a material with better corrosion resistance can reduce the generation of fouling. The surface of the material will also affect the generation of dirt, the greater the surface roughness, the easier to scale, so the choice of material used is very important.

Solutions

Daily life using finned tubes must remember to place in a clean and ventilated environment, regular cleaning and maintenance, available professional cleaning agents to wash its oxide film, for the finned tube on an accumulation of ash and impurities, the need for timely cleaning, so that our finned tube heat exchanger service life is long.

These are the reasons for the poor performance of the heat exchanger after a long period of use. The later maintenance of any equipment is very important. If you have any doubts about the maintenance of heat exchangers, you can consult Shanghai Jiangxing Chemical Equipment Co.Led.