Spiral Heat Exchanger Type 2

Type 2 spiral configurations extend the same self-cleaning geometry to condensing and evaporating duties — phase-change service where a fluid changes state as it passes through the unit. The spiral’s continuous channel and induced turbulence help manage the changing flow characteristics that come with condensation or evaporation, in a footprint far smaller than a comparable shell and tube unit would need.

This makes Type 2 a strong fit for condenser and reboiler-type duties involving fouling or viscous fluids — combining the phase-change handling of specialized process equipment with the fouling resistance that makes spiral geometry valuable in the first place. Where Type 1 is chosen mainly for difficult fluids, Type 2 is chosen for difficult fluids and a phase change happening at the same time.

Our engineers design Type 2 units around both demands together: confirming the spiral geometry can handle the changing flow characteristics of condensation or evaporation, while still delivering the self-cleaning action the fluid’s fouling tendency requires — two constraints that have to be satisfied simultaneously, not traded off against each other.

This is where configuration choice matters most — Type 1 and Type 2 aren’t interchangeable, and defaulting to the wrong one because it was used on a similar-sounding project before is a common source of underperformance. For duties with unusual condensing or evaporating behavior, we assess your actual process data — and sometimes recommend a smaller trial — before finalizing a design, confirming the configuration will perform as expected before committing to full-scale fabrication.