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Corrugated Tube Heat Exchangers

What is a corrugated tube in heat exchangers?

 

A corrugated tube is a pipe with an helical groove obtained from a plain tube by cold forming. The number of starts of the helix can be changed as well as the angle to optimise the heat transfer and performance.

Furthermore, the mechanical properties of the original plain tube are not reduced, being this recognised by TÜV. (Independent German certification company worldwide recognized).

We have developed our own corrugation technology
SACOME Corrugated Tube Heat Exchanger
Corrugated tube heat exchangers mounted on a frame

Advantages and main features of corrugated tube heat exchangers

 

Hygienic profile

 

Similar drainability to a plain tube, as there are no dead zones.

 

Different corrugation geometries

 

HARD Corrugation. Allows to achieve a very high improvement of heat transfer coefficient which compensates the inherent increase in pressure loss.

SOFT Corrugation. Intermediate between smooth tube design and tube corrugation HARD improving heat transfer to a lesser extent, but with lower pressure drop.

 

Turbulent flow, that is achieved with lower Reynolds number that for smooth tubes

 

The greatest advantage of the corrugation is increased fluid turbulence when flowing through the inner tube, which means that can work in a turbulent flow even with a low Reynolds number. In fact, while for a smooth tube the transition regime between laminar and turbulent flow is around 2000-2500, in a corrugated tube this transition can be located close to Reynolds 500.

 

Comparing the Nusselt number between a corrugated tube and a smooth tube at different Reylolds

 

 

 

Higher heat transfer coefficients

 

If you compare it to plain Shell and Tube Heat Exchangers.

 

SACOME corrugated tube heat exchangers

 

Lower exchange area

 

In some cases half the required area with smooth tubes.

 

Homogeneus thermal treatment

 

Due to the mixing capability enhanced by the corrugation.

 

Lower fouling

 

Because of the self-cleaning effect provided by the higher turbulence levels.

 

Less fouling in corrugated tube heat exchangers

 

Shorter residence times

 

Without stopping for cleaning, having a higher response to CIP.

How to calculate a heat exchangers?

More info

Advantages of tubular heat exchagers

More info

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