1. High heat transfer coefficient.
The structure of the air-cooled heat exchanger, from the strength of the point of view is very good, and from the point of view of heat transfer is also very ideal, because the fluid flow in the shell side does not exist baffle - shell, baffle - heat exchanger tube, tube bundle - shell bypass. The appearance that the fluid passing through these bypasses does not fully participate in heat transfer can be avoided. And the corrugation of the plate can make the fluid flow turbulence at a small flow rate. Therefore, the air-cooled heat exchanger has a higher heat transfer coefficient, which is generally considered to be three to five times that of shell and tube heat exchanger. To accomplish the same heat transfer mission, the comparison between shell and tube heat exchanger and air-cooled heat exchanger; The heat transfer area of air-cooled heat exchanger is less than half of the heat transfer area of shell and tube type.

2. The correction coefficient of temperature difference is large.
In shell and tube heat exchanger, two kinds of fluid flow in the shell side and the tube side respectively, the overall flow method is cross-flow. If further analysis, the shell side is a mixed flow, the pipe side is a multi-flow, so the log average temperature difference should be selected correction coefficient. The correction coefficient is usually small. The flow of fluid in the air - cooled heat exchanger is generally a parallel flow or countercurrent flow method.

3. Small footprint
Per unit volume of air cooled heat exchanger structure is compact, so the heat exchange area of tube and shell heat exchanger for several times, also don't like tube and shell heat exchanger, want to reserve a spare tube bundle repair place (unless the device location for maintenance), and thus achieve the same heat transfer mission, covers an area of about tube air-cooled heat exchanger heat exchanger from one 5 to one over ten.

These are the three advantages of air-cooled heat exchangers.

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