Should a fixed-tube-sheet heat exchanger be used for media that can easily cause tube corrosion or scaling in the shell side?
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Should a fixed-tube-sheet heat exchanger be used for media that can easily cause tube corrosion or scaling in the shell side? Is that so? Why? Thank you
Fixed-tube-sheet heat exchangers have a simple structure, low manufacturing costs, are easy to clean on the tube side, allow the tube side to be divided into multiple passes, and the shell side can also be divided into two passes; they come in a wide range of specifications, which is why they are widely used in engineering applications. The shell side is difficult to clean, and it is not suitable for use with dirty or corrosive media. When the expansion difference is large, expansion joints can be installed on the shell to reduce the thermal stress caused by the temperature difference between the tube and shell sides.
This statement is inaccurate; there are many factors to consider when choosing a heat exchanger. For the fixed-tube-sheet heat exchanger mentioned in the question, the factors to consider are: (1) the temperature difference between the media should be small; (2) the fluid flowing in the tube side should be clean. As for corrosivity, it depends on the material of the heat exchanger.