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Quotes - Engineering - SalesU-Tube Heat Exchangers For
Single Tubesheet Design
U-Tube Duty
In a straight-tube exchanger both ends of every tube must be held and sealed, which needs a tubesheet at each end. In a U-tube exchanger the tube turns around inside the shell, so both ends arrive at the same place.
The structural consequence. Half the tubesheets, no rear head, no rear pressure-boundary joint. On any exchanger those are significant components, and on a high-pressure or high-alloy unit they are a substantial fraction of the cost.
Cladding and overlay. Where the wetted face needs an alloy the whole tubesheet does not, a corrosion-resistant layer is clad or weld-overlaid onto a carbon steel base. That gets alloy performance at the surface that matters without alloy cost through the full thickness, which on a thick high-pressure tubesheet is a large saving.
Request a QuoteSingle Tubesheet Design Applications
Where the Saving Actually Lands
On a small carbon steel exchanger the second tubesheet is a modest line item. On a large unit in Hastelloy or titanium it is enormous, and removing it changes the economics of the whole selection.
This is why U-tube construction dominates high-alloy service. The material cost of a thick alloy tubesheet is high enough that halving the count often outweighs the loss of tube-side cleaning access.
Selection Data We Need
Flow rate and identity of both fluids, inlet and required outlet temperatures, operating and design pressures, allowable pressure drop on each side, and any code, alloy or hygienic requirement. Fouling history, turndown range and cleaning method matter as much as the design point.
