I would like to know when this type of connector is used in diagrams?
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I encountered a vertical heat exchanger, with steam as the fluid in the shell side; the condensate outlet at the bottom is designed in the structure shown in the diagram. I wonder why; are there any advantages to this structure?
If drainage is carried out, it won’t be thorough even if it’s not at the lowest point, but it’s still better than doing nothing
With such a structure, the condensate cannot be drained completely; the centerline of the drainage outlet is set 5 mm above the upper surface of the lower tube sheet.
There’s a problem with the structure; why isn’t it mounted on the tube sheet and sealed with a plug instead?
It’s not the optimal solution; the liquid cannot be completely drained
It is in the form of a reducing tee, which facilitates the smooth drainage of condensate and prevents the gas phase from escaping. If the gas phase is under negative pressure, a vacuum port can be provided in the opposite direction to the condensate flow. Another advantage of such a structure is that if the shell-side gas contains scaling agents, it is easy to introduce backwash fluid.