Can the heat exchange tubes be sealed directly with flat end caps?
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A shell-and-tube heat exchanger is selected, but only one end of the heat exchange tubes needs to be used for inlet and outlet. So, can the end that needs to be sealed be sealed directly with a flat-end cover, or is it still necessary to use a tube sheet, sealing it with the tube sheet first and then using a flat-end cover? ? Also, is it welded in place directly? ? Please ask an expert for help! ! Thank you! ! ! !
Of course, a tube sheet is needed, and the passage must not be sealed off; otherwise, how can the medium return?
What you are referring to are heat exchangers with more than two flow paths: fluid enters at one end and exits at another, so it cannot be sealed off by welding or using a flat head; a closed loop must be formed. As for the type of head to be used, there are regulatory requirements in place. A flat head isn’t really considered a head at all – it’s just a flat plate. It is generally used in applications with low pressure, small diameter, and low stress levels, in order to save costs.
Why not choose a double-pipe U-tube heat exchanger
Reply to 2# zzlwqj: Thank you~ I just want the medium to return along its original path, so using a tube sheet seal will do, right?
Reply to 3# chinazwr: No, what I mean is a one-way system. I only need one port – it’s like a water cup: water is poured in through one end and then poured out through that same end. So a tube sheet is needed at the other end, right? A flat end cap is simply used to seal the fluid in that stream
Reply to 4# zhxng: The U-shaped structure doesn’t need to be that large; it just needs to have an opening at one end for entry and exit, with the other end sealed. It’s used in the form of a heat exchanger, but it’s not actually a real heat exchanger. Thank you
Reply to 7# Notebook’s Tail, thank you