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Spiral heat exchangers
November 1st 2007

Joining Alfa Laval's range of spiral heat exchangers is the ALSHE Cond for use in two-phase processes. The unit is configured so that one stream is in a spiral flow while the other flows across it in parallel to its axis.

The spiral flow channel generally accommodates the cooling medium while the cross flow channel is dedicated to the gas or vapour to be cooled. This ensures the unit can handle high liquid velocities in the closed,spiral channel and large gas or vapour volumes and low pressure drop on the other side.

The liquid velocity in the spiral channel serves a dual function: it increases heat transfer efficiency and virtually eliminates fouling.

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