Let us build the performance of your processes

2 phases spiral column – Type 2 column


The vapor circulates, cross flow, in a fully opened channel, with negligible pressure drop and the coolant circulates in a closed spiral channel.

The column is made of several spiral heat exchanger welded in series in the same shell to achieve large condensing duties.

It is perfectly suitable for vacuum condensation with negligible pressure drop.


The fluid to evaporate circulates in an adjusted channel gap, fully opened, that allows working with fouling fluids. it also enables easy access for an inspection or an eventual mechanical cleaning.

Negligible pressure drop

Thanks to the cross flow on the steam / vapour side there is nearly no pressure drop (we are in a range of 0.1 kpa)

Condensation under vacuum

The very low pressure drop allows spiral heat exchangers to process under complete vacuum conditions.

Low maintenance cost

Nexson spiral column heat exchangers are designed to maximize heat transfer surface. In addition, we supply our equipement with inner cleaning system to keep maintenance costs limited.

Customized to fit your need

Nexson spiral colum heat exchangers are customized to fit the process need and existing plant arrangement.

Heat transfer area surface

The heat transfer area available for this spiral column heat exchanger varies from 200 to 5000m².

Traditionally used as

  • Vacuum condenser
  • Overhead condenser
  • Gas cooler
  • Reflux condenser
  • Vent condenser
  • Steam heater

Associated products

Green Spiral – Type 2

Biphasic application

Read more

Green Spiral – Type 3

Steam heater

Read more

Contact us for more details on our products

Feel free to send us your request, we'll contact you on short notice