Heat exchanger setup issues in HTRI
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On the Drawings tab in HTRI, by clicking on setting plan on the left side, one can see the dimensions of the heat exchanger. But how are these dimensions determined? There is another issue: the diagram does not show the distance from the shell side nozzle to the tube sheet. How can this distance be determined? Thank you!
:lol:lol:lol:lol
:Lol, from what this old guy can guess, it’s based on standards like TEMA or something like that: lol
This is itself part of the design outcome. Once the baffle is in place, isn’t the pipe opening determined then?
This is a sophisticated question; it is a very crucial issue in design. In fact, conflicts often arise over this issue during the design process. In general, it is the department responsible for process calculations in design institutes that determines the location of the connections. Experienced professionals will determine the distance between the connection and the tube sheet based on the size of the connection and the length of the flange neck. The software used by process designers (such as HTRI and HTFS) is based on TEMA and ASME standards; these standards are then used to determine the thickness of the tube sheet and the flange. The length of the flange neck might sometimes be too small. In fact, if design is carried out in accordance with ASME standards, all requirements will generally be met. However, national standards can sometimes lead to conflicts – for example, when the connection is too close to the tube sheet, or when the welding position of the flange and the cylinder overlaps with that of the connection. In such cases, it is the responsibility of the equipment designers to communicate with the process engineers. Process calculations are not always straightforward, so those involved in equipment design also need to understand that this is completely normal.