How do heat exchangers classify pressure vessels I, II, and III by determining the values of P and V?
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Suppose there is a U-tube heat exchanger, with a design pressure of p1=3 Mpa for the shell side, a volume of V1=30 m3 for the shell side, and the medium in the shell side being the first type of medium； The design pressure of the tube side is p2=2.5 Mpa, the volume of the tube side is V2=26 m3, and the medium in the tube side is the second type of medium. In Annex A of TSG 21-2016 \"Regulations on Safety Technical Inspection of Fixed Pressure Vessels\", which deals with the classification of fixed pressure vessels, provisions are made regarding how such classification is to be carried out: after determining whether the medium belongs to Group 1 or Group 2, it is determined which category of pressure vessel it falls into by using the design pressure p and volume V to identify the corresponding coordinate point. The question now is: since it is determined based on the medium category and pV as to which category of vessel it belongs to, if it is classified as a Category III vessel based on the shell side and as a Category II vessel based on the tube side, then which category of pressure vessel does this heat exchanger ultimately belong to? I seek advice from experts!
P102 A1.3.2 is clear regarding the classification of multi-chamber pressure vessels
You’ve already come this far; why not look further?
The container is definitely a Class III container, but during manufacturing, each chamber is controlled separately
Classify by the highest level, and produce them separately
Does \"manufacturing in separate chambers\" mean that Class II items are manufactured in accordance with the requirements for Class II, and Class III items are manufactured according to the requirements for Class III?
Hello, what are the different requirements for manufacturing Class II and Class III containers?
I think it has little to do with whether it is Category II or Category III; essentially, it’s different parameters such as pressure and size, which result in different requirements for the manufacturing process. This is just my personal opinion, as I’m new to this field.