u tube heat exchanger.
u tube heat exchanger.
(OP)
During insertion of a U tube bundle, it was observed that because of the ovality in the shell it was difficult to push the bundle inside. In this case what is the best solution.
a) to grind the baffles ( which i think is not the best thing to do) or
b) grind the areas in the shell
Merzi
a) to grind the baffles ( which i think is not the best thing to do) or
b) grind the areas in the shell
Merzi





RE: u tube heat exchanger.
Do not play with pressure retaining parts.
RE: u tube heat exchanger.
Re-rounding of the shell might be possible with local heat, but could be tricky to do in the field.
RE: u tube heat exchanger.
RE: u tube heat exchanger.
RE: u tube heat exchanger.
I would suggest a "porta-power" and jack it back into place from the inside or the same manner from the outside. You will need to yield the shell twice as much as you need to keep it.
It would be possiable to follow metengr's suggestion. Contact a "R" stamp firm.
There may be other problems with this item such as excesive loads that caused it to go out.
RE: u tube heat exchanger.
That way you know if you're going to have a problem.
Good luck
Mike
RE: u tube heat exchanger.
@Merzi:
You have not indicated to what extent the ovality is - in other words, the amount of linear mismatch in the radii.
If the difference between the minimum internal radius of the shell and the radius of the baffle plates is not much, then you may attempt to fit the tube bundle under differential temperature (expand shell, insert bundle, cool), though this requires extreme care and discretion. I do not know, but this may even coerce the shell into a near-circular section.
Grinding the plates may effect the shell side heat transfer as marsich has pointed out.