Node tube heat exchanger
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I’m new here; I hope everyone can give me some support and help promote this forum. Issues that need to be taken into account during the design and manufacturing of stainless steel 316L bellows tube heat exchangers
Encourage new members to post. The overall feel is a bit vague. You can start by sharing what you know to stimulate discussion, so that others can follow up with their opinions: lol
Corrugated tube heat exchangers are effective, with high heat transfer efficiency – typically 5 to 8 times that of ordinary ones. The key consideration in their design is the calculation of the tube sheet. Strictly speaking, there is currently no theoretical basis for the calculation of tube sheets in corrugated tube heat exchangers. In the calculation of ordinary straight-tube tube sheets, if one of the stresses resulting from the difference in thermal expansion between the heat exchange tubes and the shell, the axial stress between the cylinder and the heat exchange tubes, or the pulling force between the tubes and the tube sheet exceeds the specified limits, corresponding corrective measures must be taken. This approach is based on a model in which the straight tubes are treated as elastic supports, while the tube sheet functions as a circular plate placed on these elastic supports. The bending stress of the tube sheet is then determined based on the magnitude of the loads, the stiffness of the tube bundle, and the surrounding support conditions. In this scenario, the heat exchange tubes both weaken and support the tube sheet. In the nodal tube heat exchanger, the effect of the heat exchange tubes on weakening the tube sheet remains, but their supporting effect on the tube sheet decreases. Generally, we thicken the tube sheet of the corrugated tube based on experience.
I would like to ask the friends on the third floor: what is the percentage increase in the thickness of your tube sheets?