The issue of the short-circuit width in heat exchangers
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As shown in the diagram, I’m curious about how others understand the concept of short-circuit width. Since I’m new to equipment design, I’m not entirely clear on this. My understanding is that it refers to the areas where there are no heat exchange tubes for support, but I’m not sure exactly which dimensions are involved. When the short-circuit width exceeds 16 mm, a structure to prevent short circuits is necessary. And what exactly does this 16 mm refer to? I would really appreciate some guidance from those who are more experienced in this area. Thank you very much!
Isn’t there any expert here to answer? I’ll handle it myself!
Is there no expert here to answer? I’ll handle it myself!
Doesn’t the forum have experts in heat exchange equipment? Push yourself!
It’s the areas where there are no heat exchange tubes – the gaps between the outermost heat exchange tubes and the shell, as well as the spaces that remain at the partition points
In the areas on the outer circumference of the tube holes in the heat exchange tubes on the baffle plates where there are no heat exchange tubes, if it is a horizontal gap, the fluid flows upward and downward; in such cases, baffles need to be installed horizontally to prevent short circuits. If it is a vertical gap, the fluid flows from side to side, and bypass baffles need to be placed at the top and bottom. In the areas of the center with partition grooves where no pipes are installed, dummy pipes or tie rods must also be placed to prevent short circuits. Don’t you see detailed explanations under General Rule 6.8.3? When looking at standards, one needs to consider them in their entirety.
It’s specified in the standards; you wouldn’t place the trimmed edges in areas where no piping is present