Issues regarding the oblique joining in the direction of the medium flow
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There are also steam condensate pipes and hot water pipes. When returning to the main pipe in the ductwork, it is generally required that the connections be made at an angle in line with the flow direction of the fluid. If the hot water pipe has a diameter of DN150 while the main pipe in the ductwork has a diameter of DN200, then how should the connection be made at an angle? Use an elbow fitting? Should we just make holes for reinforcement?
The main thing to consider should be the reasons for stress elimination, right? Why not simply use a reduced-diameter tee DN200X200X150?
Reply to 2# yanyu729: The book states that oblique jointing is used to reduce pressure drop and prevent hot water from vaporizing. If a 200×200×150 reducing tee is used, then an angled connection isn’t possible!