Our Spiral Plate Heat Exchangers are made of 2 concentric channels on which spacer pins are welded to form the channel’s gaps. Each channel gap and the width of the channels are selected to meet each Customer’s specific requirement and working conditions. It permits to take into account the flow rates, the sizes of the particles for fouling fluids and the pressure drops. These spacer pins facilitate turbulent flow in each channel.

Able to work in extreme conditions (of pressure and temperature), this single channel heat exchanger, with self-cleaning effect, has become the alternative to the shell & tube exchangers.

Nexson spiral plate heat exchangers are used for a design pressure from full vacuum to 80 barg and at -200°C design temperature to 450°C. Thanks to its specific design, the liquid to liquid heat exchanger can handle one or two fouling fluids. Both channels are easy to access for inspection and cleaning.

Some features :

Single channel : The single channel flow of our heat exchangers makes it a unique feature in the world.

Self cleaning effect :Thanks to the single channel configuration, a turbulent flow is created to handle tough medias. As it is a single channel heat exchanger, if there is any cross section reduction inside the channel, flow velocity will increase flushing out the deposit.

Fouling duties : Originally the spiral plate heat exchanger was mainly used in the pulp and paper industry where fouling problems were frequent when using classical shell and tube exchangers (or multi channels heat exchangers) due to fibers in the effluents.

Tough process conditions : Because of their robust construction Nexson spiral heat exchangers are meant to handle cycling duties. Nexson spiral heat exchangers can expand without mechanical failure when pressured or by increase in temperature.