Spiral heat exchangers

  • Overview
  • Documents
  • Related products
  • Case stories
  • FAQ

Exceptionally well-suited for sludges, slurries, waste water, fouling, liquids with high viscosity, and liquids that contain fibers and solids, our SONDEX® spiral heat exchangers are the definitive solution for applications that require treatment of challenging fluids. The design allows for a countercurrent flow that makes it possible to achieve very close temperature approaches.

Since we use coiled metal sheets instead of tube bundles, we can achieve very high thermal performance without sacrificing the channel gap that lets the media flow unimpeded.

The spiral coil itself also contributes to the turbulent flow, and the single-channel design helps alleviate fouling with a “self-cleaning” effect. Accumulated deposits create local increases in velocity, creating a scrubbing effect that is enough to loosen the build-up in fouling in most cases. This allows our SONDEX® spiral heat exchangers to operate in very long sessions without maintenance or cleaning.

Some media, however, are so challenging that the heat exchanger requires more frequent maintenance and cleaning. With this in mind, we have designed hinged covers that are sealed with C-clamps, creating a swing door that is very easy to open and close without any special tools required, letting you access the entire coil for inspection and cleaning.

Features and benefits

Single-channel design that generates high shear rates which contribute to a self-cleaning effect, preventing clogging of the unit. Spiral heat exchangers are the perfect solution for challenging, high-viscosity media.

The channel size is selected to fit the flow and qualities of the media. The many variations in diameters and widths of the spiral coil allow for many different combinations, which mean that we can create the optimal solution for every duty.

Designed to handle a very aggressive temperature program and with a wide range of materials and plate thicknesses available, we customize each spiral heat exchanger to match the requirements of any application.

Limited need for maintenance and cleaning ensures extended operational uptime. If the need for cleaning arises due to particularly difficult media, the hinged covers provide easy access to the entire heat transfer surface.

Very compact solutions, our spiral heat exchangers have minimal space requirements. Despite their small stature, the long, curved flow paths allow for very high heat transfer coefficients up to twice as high as their shell and tube counterparts.

Applications

  • Dairy/food/beverage industry
  • Biogas industry
  • Wastewater industry
  • Pulp and paper industry
  • Heavy industry
  • Petrochemical industry
  • Chemical industry

Technical specifications

  • Connections from DN32 to DN300 (1 1/4" to 12")
  • (Frames designed according to FEA and PED 2014/68/EU (EN13445) and ASME sec VIII, Div. 1 construction standards)
  • Shell materials: Carbon steel, stainless steel
  • Spiral materials: Carbon steel, stainless steel
  • Working pressure up to 16 bar (145 psi)*
  • Working temperatures from -20 °C to 200 °C (-4 °F to 392 °F)

*Higher pressure available upon request

Spiral heat exchangers

SONDEX® spiral heat exchangers are the ultimate solution for even the most challenging, high-viscosity media.

Documents

Documents
Type Name Language Valid for Updated Download File type
Brochure A world of heat exchangers English Multiple 13 Feb, 2024 7.1 MB .pdf
Brochure SONDEX® Free Flow sugar brochure English Multiple 12 Feb, 2024 7.8 MB .pdf
Data sheet SONDEX® Spiral heat exchanger - SonSPV English Multiple 25 Oct, 2022 769.7 KB .pdf
Brochure Spiral heat exchanger English Multiple 12 Feb, 2024 4.5 MB .pdf

Related products

  • if (isSmallPicture) { Semi-welded plate heat exchanger; } else if (isBigColumns) { Semi-welded plate heat exchanger } else { Semi-welded plate heat exchanger }
    Semi-welded plate heat exchanger for industrial refrigeration ammonia applications

    The semi-welded plate heat exchangers are optimized for industrial applications. The semi-welded plate heat exchangers from Danfoss is designed for ammonia systems and can be used for applications such as Condensers, flooded and pumped evaporators, Sub-coolers, Desuperheaters and Oil coolers.

  • if (isSmallPicture) { Micro channel heat exchangers - Danfoss; } else if (isBigColumns) { Micro channel heat exchangers - Danfoss } else { Micro channel heat exchangers - Danfoss }
    Micro channel heat exchangers

    Save time and money with MCHE standard products. The introduction of micro channel heat exchanger condensers, which combine resource and energy efficiency with minimal use of refrigerants, is enabling the development of leaner, greener solutions. Select one of our standard products and you can buy any quantity of condensers, any time, large or small, directly from stock.

  • if (isSmallPicture) { SONDEX® Spiral heat exchangers- Danfoss; } else if (isBigColumns) { SONDEX® Spiral heat exchangers- Danfoss } else { SONDEX® Spiral heat exchangers- Danfoss }
    Spiral heat exchangers

    Exceptionally well-suited for sludges, slurries, waste water, fouling, liquids with high viscosity, and liquids that contain fibers and solids, our SONDEX® Spiral heat exchangers are the definitive solution for applications that require treatment of challenging fluids. The design allows for a countercurrent flow that makes it possible to achieve very close temperature approaches.

  • if (isSmallPicture) { SONDEX® standard plate heat exchangers- Danfoss; } else if (isBigColumns) { SONDEX® standard plate heat exchangers- Danfoss } else { SONDEX® standard plate heat exchangers- Danfoss }
    Standard plate heat exchangers

    SONDEX® standard plate heat exchangers are the ideal choice for a wide range of applications across numerous market segments. We have the largest plate portfolio in the world, and customize each heat exchanger to meet your exact requirements. Innovative technologies and smart design make our traditional plate heat exchangers a stellar investment.

  • if (isSmallPicture) { SONDEX® Sanitary plate heat exchangers- Danfoss; } else if (isBigColumns) { SONDEX® Sanitary plate heat exchangers- Danfoss } else { SONDEX® Sanitary plate heat exchangers- Danfoss }
    Sanitary plate heat exchangers

    SONDEX® sanitary plate heat exchangers are made for applications with strict hygienic requirements and use FDA compliant materials. We care greatly about your end product, and take the necessary steps to ensure the highest output quality. Each solution is designed based on your specifications to provide the perfect conditions for your product.

Case stories

FAQ

The choice of heat exchanger depends on many factors. Our skilled sales engineers design the heat exchanger with the appropriate dimensions and correct specifications based on your input and requirements, to ensure that you receive a quality solution that performs optimally.

Our heat exchangers are approved and certified according to industry standards and requirements. For specific details, please reach out to your local SONDEX® brand sales representative.

Please contact your local SONDEX® brand sales responsible.

Please contact your local SONDEX® brand sales office. For the most accurate quotation, please prepare the following data:

  • Duty,
  • Type of media,
  • Pressure drop,
  • Flow rate,
  • Working pressure,
  • Thermodynamic properties, Temperature,
  • Working temperature.