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Quotes - Engineering - SalesBEU U-Tube Heat Exchangers
The Default U-Tube Arrangement
BEU is what you get when nothing in the duty argues for something else. The bonnet is a single welded head that bolts to the shell. The E shell carries the shell-side fluid from one end to the other in a single pass. The U-bundle handles expansion and lifts out for cleaning.
Where it fits. Clean tube-side fluid, a shell side that may foul, a temperature difference large enough to rule out fixed tubesheet, and no requirement to open the tube side frequently. Chemical, petrochemical and refining service is full of exactly that combination.
What it gives up. Opening the tube side means unbolting and removing the bonnet, which on most installations means breaking the tube-side piping first. If that is a routine task, AEU is the better buy.
Cost position. Fewer joints than a channel head, no rear head at all, one tubesheet. Among removable-bundle exchangers there is nothing cheaper, which is why it dominates.
Typical Construction
- Front head: B - bonnet, integral cover
- Shell: E - single pass
- Rear head: U - U-tube bundle
- Bundle: Removable
- Tube passes: Two minimum, even numbers only
- Expansion: Accommodated by the bundle; no expansion joint
- Tube-side access: Requires bonnet removal
- Shell-side cleaning: Mechanical, with the bundle withdrawn
- Typical materials: Carbon steel through high alloys
- Codes: ASME Section VIII, TEMA R, B or C
BEU U-Tube Heat Exchangers
CONFIGURATION • TEMA
AEU Heat Exchangers
AEU U-tube heat exchangers with a channel and removable cover, so the tube side opens for inspection without breaking the process piping.
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CONFIGURATION • TEMA
BKU Kettle Reboilers
BKU kettle U-tube heat exchangers for reboiler and vaporizer duty. Enlarged shell for vapor disengagement, weir and liquid level, and why kettles use
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CONFIGURATION • TEMA
DEU High-Pressure
DEU U-tube heat exchangers with a D-type high-pressure front head closure, for tube-side pressures beyond bolted bonnet and channel construction.
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When to Step Up From BEU
Move to AEU when the tube side needs regular inspection or mechanical access. Move to BKU when the duty is boiling and vapor has to disengage. Move to DEU when tube-side pressure exceeds what a bolted bonnet holds economically. Move to BFU when the temperature profile crosses.
If none of those apply, BEU is the answer and paying for anything else is paying for capability the duty will not use.
