The difference in calculation between U-shaped heat exchanger and tube plate heat exchanger
Thread Content
As the title states, in design calculations, what are the main differences between the two? I have the calculation steps for the fixed tube plate heat exchanger. I would like to know the calculation steps for the U-shaped tube heat exchanger, or what is the difference? Thank you.
The main reason is that the calculation of the tube plate is different. The U-shaped tube heat exchanger does not need to consider the thermal expansion difference, but the tube plate has no reinforcing effect. The calculated thickness is thicker than the fixed tube plate. The specific calculation method is in GB151.
The U-shaped tube heat exchanger has only one fixed tube plate, and the U-shaped tube bundle can expand and contract freely in the shell without restrictions, so the temperature difference stress does not need to be considered. The fixed tube plate heat exchanger has two fixed tube plates. The tube bundle is restricted by the shell and the tube plate and cannot expand and contract freely, so the temperature difference stress does not need to be considered. The calculation method is as mentioned on the second floor and is available in GB151.
The calculation method is as mentioned on the second floor and is available in GB151.
At the end of the interpretation of the GB151 standard, there are 6 calculation examples. Let’s compare the examples with each other. There are also 151. The tubesheet calculations are different for different connection methods. Pay attention to the calculation method corresponding to each method.