EN - 12
5.11 - Increasing the transfer area
It is possible to add an even number of extra plates to an existing heat exchanger, provided you:
- Check the maximum plate capacity of the heat exchanger.
- If the length is insufficient, provide new carrying bars and threaded rods.
- Replace the data plate and the plate arrangement drawing with the new ones provided by CIAT.
- Leaks often occur when plates with new gaskets and plates with old gaskets are used together (due to difference in toughness).
We therefore strongly recommend replacing all worn gaskets with new ones.
5.12 - Spare plates
Plates may be replaced individually or altogether. In this last case, however, it is recommended to replace all the gaskets (see the previous
section).
If only a few plates are replaced, indicate the sequence of the plates to be replaced shown on the plate arrangement drawing.
H
H
H
H
H
L
L
1
2
5
H
L
H
H
H
L
L
1
2
5
55%-95% proportion of H plates
50/50 proportion of H and L plates
H
L
L
H
H
L
L
1
2
5
5%-45% proportion of H plates
1
2
3
4
6
5
5
Two-pass/Two-pass arrangement (2-2)
5.10 - Arrangement examples
Legend
1 - Fixed head
2 - Movable follower
3 - Initial plate
4 - End plate
5 - Intermediate plates
6 - Turning plate
1
2
3
4
5
Single-pass/Single-pass arrangement (1-1)