Spiral heat exchanger
May 1st 2010 The latest addition to Alfa Laval's
spiral heat exchangers range, the allstainless
steel ALSHE VAP, is a
standardised exchanger available with
fast delivery times, designed
specifically for use as a vapouriser in a
wide range of process industries.
Unlike a conventional spiral heat
exchanger in which media flow in
direct counter-current flow, the
ALSHE VAP is configured so that one
stream is in spiral flow while the other
flows across it, in parallel to its axis.
The spiral flow channel generally
accommodates the heating medium
while the cross flow channel is
dedicated to the fluid to be
vapourised or boiled. This design
ensures that the unit can handle high
liquid velocities in the closed, spiral
channel and, on the boiling side, the
large cross-flow area with a relatively
low physical height makes the unit
suitable for operation at low pressure
or under vacuum.
The four models in the range
handle temperatures to a maximum
of 300°C and minimum of -100°C. More articles from Alfa Laval Limited: | 
