Plate & shell heat exchangers | Sondex/Danfoss | Philippopoulos s.a.
Plate & shell heat exchangers | Sondex/Danfoss | Philippopoulos s.a.

Plate & shell heat exchangers | Sondex/Danfoss

SONDEX® SPS Shell/Plate Heat Exchangers by Danfoss

SONDEX® SPS units are heat exchangers featuring a welded plate pack within a pressure shell. They are primarily used for steam condensation, steam heating, and circuits requiring higher pressures or temperatures than conventional gasketed plate heat exchangers.

Process Applications

Typical uses include:

  • Condensation of steam or process gases,
  • Steam heaters for clean fluids, deionized water, and clean thermal oils,
  • Oil coolers and gas heaters/coolers,
  • HVAC, marine, offshore, chemical, petrochemical, biogas, sugar, paper, and heavy industries.

FL and FW Versions

The FL version is bolted, with a removable plate pack for inspection and maintenance. The FW version is fully welded, chosen when temperature, pressure, or media compatibility do not allow for a shell-opening solution. Cleaning in FW is performed via CIP, not by opening the exchanger.

Technical Selection Limits

  • Operating pressure: up to 25 bar for FL, up to 40 bar for FW.
  • Temperature: from -10 °C to 250 °C for FL and up to 400 °C for FW.
  • Plate side connections: DN25 to DN400/150, depending on model.
  • Shell connections: DN25 to DN300.
  • Multi-pass configuration up to 5 passes.

Materials and Sealing

Plates are available in AISI 316L, AISI 304, and titanium. The shell can be P355GH carbon steel or stainless AISI 304 / 316L. In bolted versions, sealing materials are PTFE or graphite. Frame painting is available for corrosion categories C2L, C4M, and C5M.

Standards

Design complies with PED 2014/68/EU, EN 13445, and ASME Section VIII Div. 1, with additional approvals per project.

FAQ

When to choose SPS over shell & tube?
When a compact arrangement with a higher heat transfer coefficient and suitable pressure/temperature limits is required.

When is FL preferred?
When inspection and mechanical cleaning are priorities.

When is FW preferred?
In higher temperatures, pressures, or media requiring fully welded construction.

Datasheet and documents

Description

Our Danfoss plate and shell heat exchangers are perfect choices for condensation and steam heating duties. A fully welded plate pack makes the heat exchangers well-suited for handling aggressive media as well as high pressure levels and temperatures. Less space demanding and much lighter in weight, they are good replacements for shell and tube heat exchangers.

Danfoss plate and shell heat exchangers combine the strengths of both shell and tube heat exchangers and plate heat exchangers, retaining the high working pressure and temperatures of the former coupled with the high efficiency of the latter. A “best of both worlds” solution, our plate and shell heat exchangers provide unmatched performance for a wide range of applications, particularly vapor condensation duties.

Features and benefits

  • Very adaptable heat exchanger. An excellent choice for handling condensation duties. They are also perfect steam heaters of clean fluids, demineralized water, and clean thermal oils.
  • The heat exchanger is designed to be highly resistant to thermal shocks as well as thermal and pressure fatigue making it very well-suited for cyclic duties and other duties with sudden, large fluctuations in temperature.
  • Available in both bolted and fully welded designs. The fully welded types can handle higher temperatures and pressure levels than the bolted types, but cannot be opened for cleaning. This can instead be done with CIP (Cleaning in Place) systems.

Applications

  • HVAC industry
  • Marine/offshore industry
  • Dairy/food/beverage industry
  • Sugar industry
  • Biogas industry
  • Pulp and paper industry
  • Heavy industry
  • Mining industry
  • Petrochemical industry
  • Chemical industry
  • Condensation
  • Steam heating
  • Oil coolers
  • Gas heaters/coolers

Technical specifications

  • Connections from DN25 to DN300 (1" to 12")
  • Frames designed according to FEA and PED 2014/68/EU (EN13445) and ASME sec VIII, Div. 1 construction standards
  • Plates made from AISI 304/316, titanium*
  • Shell materials: Carbon steel, stainless steel
  • Working pressure up to 40 bar (580 psi)
  • Working temperature -10 °C up to 250 °C (14 °F to 482 °F) for bolted types and up to 400 °C (752 °F) for the fully welded types

*other materials available upon request