In a floating-head heat exchanger, the two tube sheets are different, right?
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When designing the two tube sheets of a floating-head heat exchanger, is it sufficient to calculate one of them or are both needs to be calculated? One piece can be calculated using the floating head type tube sheet, and the other one should be calculated using what method? Thank you all for your help
It’s sufficient to consider just one section, namely the one held by the tube box flanges; the thickness of the floating end tube sheet is the same as this thickness.
During the recent maintenance work, data was collected on the 37 heat exchangers in the unit, and it was found that the thickness of the tube sheet at the shell side is the same as that at the floating head side. This post was last edited by 7979815 on 2009-4-19 20:17.]
Generally, the same thickness is used, but when calculating the tube sheet in practice, an additional depth for the baffle groove is taken into account (usually, the corrosion margin of the tube sheet is smaller than the depth of the baffle groove). The tube sheet at the floating head end does not have a baffle groove, so only a corrosion margin needs to be considered. Since the difference is only a few millimeters, it is easier to select materials when using forgings of the same thickness (tube sheets are generally forged), and therefore the same thickness is specified in the design.