Available configurations
- Liquid-to-liquid spiral exchanger
- Vapor condenser and selected gas duties
- Removable or welded cover arrangements
- Horizontal or vertical project layouts
SPIRAL technology
Spiral Heat Exchangers
Fully welded single-channel heat exchangers for fouling fluids, sludge, slurries, viscous media and industrial heat recovery.
HEXNOVAS WORKSHOPSpiral plate heat exchanger manufacturing
01 / 03Working principle
How the technology transfers heat.
Two metal plates are rolled into separate concentric spiral passages. One fluid flows from the center toward the outside while the second counter-flows in the adjacent channel. Each medium follows one continuous path, so a local restriction increases velocity rather than allowing flow to bypass the fouled area.
- Heat-transfer area
- Typically 1–500 m² per unit
- Channel spacing
- Typically 5–38 mm
- Design pressure
- Full vacuum to 40 barg, configuration-dependent
- Design temperature
- -100°C to 400°C, configuration-dependent
- Plate thickness
- Typically 2.0–6.3 mm
- Shell diameter
- Up to approximately 2500 mm
Engineering explained
See what is happening inside the exchanger.
Product imagery is paired with technical context so buyers and engineers can understand construction, flow path and configuration—not just the exterior.
A robust, serviceable spiral core
The welded spiral core creates two isolated continuous passages. Covers, nozzles and supports are configured around pressure, cleaning access and installation requirements.
Single-channel counter-current flow
Hot and cold media travel in opposite directions through adjacent spiral channels. The single path maintains velocity and reduces stagnant zones in fouling service.
Spiral core fabrication
A real welded spiral core shown during production, before the removable cover and final external finishing are completed.
Controlled welding and finishing
Workshop fabrication is completed around the spiral channel geometry, connections and agreed inspection requirements.
Completed stainless-steel unit
A finished stainless-steel spiral heat exchanger with its spiral channel face, shell, supports and process connections visible.
Production-ready equipment
Completed vertical units demonstrate the range of project-specific vessel, nozzle and support arrangements available.
Why this technology
Designed around performance, integrity and serviceability.
- One continuous channel minimizes bypass and maldistribution
- Local velocity increase creates a natural self-cleaning effect
- Counter-current flow supports close temperature approaches
- Removable-cover configurations provide mechanical cleaning access
Product configuration
Structure and material options.
Material options
- Carbon steel, SS304 and SS316L
- Duplex 2205, 904L, 254 SMO and AL6XN
- Titanium and nickel alloys after corrosion review
Typical applications
Where this exchanger fits.
Wastewater and sludge heating
Chemical and petrochemical process recovery
Pulp, paper and fibrous fluids
Edible oil, mining slurry and vapor condensing
Selection information
What our engineers need from you.
Provide both fluid compositions and flow rates, inlet and outlet temperatures, allowable pressure drop, viscosity, solids or fiber content, particle size, fouling tendency, cleaning method, design conditions and material requirements.
Frequently asked questions
Key questions before product selection.
How does Spiral Heat Exchangers work?
Two metal plates are rolled into separate concentric spiral passages. One fluid flows from the center toward the outside while the second counter-flows in the adjacent channel. Each medium follows one continuous path, so a local restriction increases velocity rather than allowing flow to bypass the fouled area.
What information is required to select the right product?
Provide both fluid compositions and flow rates, inlet and outlet temperatures, allowable pressure drop, viscosity, solids or fiber content, particle size, fouling tendency, cleaning method, design conditions and material requirements.
Which materials and configurations are available?
Carbon steel, SS304 and SS316L; Duplex 2205, 904L, 254 SMO and AL6XN; Titanium and nickel alloys after corrosion review
How is the final product size confirmed?
The final size is confirmed by thermal calculation using flow rates, inlet and outlet temperatures, allowable pressure drop, design pressure and fluid properties.
Product documentation
Catalogue and technical downloads.
Use the published catalogue for product-range reference. Final dimensions, ratings and materials are confirmed for the selected model and operating duty.
Discuss this product