sw-6 calculation for 4-pass floating head flange
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After the SW6 update, when calculating the floating head flanges for floating head heat exchangers, it is necessary to enter the area of the partition diaphragm. If there are 4 flow paths, how should this value be entered? Thank you for your advice
For this, you just need to fill in the values based on the dimensions of the partition. Now this item is included in the calculations for multi-pass heat exchanger flanges.
It’s not easy to fill in this data; for the floating head end diaphragms in 4-pass systems, it is necessary to carry out drafting work in order to determine the area of the diaphragms. What is referred to here is the area of the diaphragms, not their cross-sectional area
Fill in the actual cross-sectional area of the partition on that side and the thickness of the stage partition. What’s a bit uncertain, though, is that for thick partition plates, whether the thickness in the direction of the cross-sectional area should be the actual thickness or the thickness after thinning where it comes into contact with the tube sheet.
This is the area of the partition, not its cross-sectional area； On the flange data card, that field is for entering the cross-sectional area of the partition
I think it should be the cross-sectional area of the partition plate where it comes into contact with the tube sheet; the thickness should be that of the tube sheet after being thinned, and this value is used to calculate the contact area of the gasket on the floating flange. But I couldn’t find any basis for this in the calculations of GB/T151 floating head flanges; please advise, experts.
The area of this region is the area of the baffle grooves. You can take a look at the formula I developed myself for calculating the area of baffle grooves in four-pass heat exchangers: https://bbs.hcbbs.com/thread-2143770-1-1.html (Source: Haichuan Chemical Industry Forum)
I think it’s all about the cross-sectional area; simply talking about the area of the partition is a serious problem.