Serpentine Heat Exchangers

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  • SERPENTINE COILS

    Optimal solution for compact condenser/evaporator applications

    Microchannel heat exchanger

SMALLEST HEAT EXCHANGERS FOR REFRIGERATION AND COOLING

Serpentine heat exchangers are among the most compact and minimal-volume microchannel coils available, featuring an innovative design without manifolds. This arrangement makes them ideal for space-saving and lightweight cooling applications where size and efficiency are critical.

The reduced internal volume of these coils is especially advantageous for systems using flammable or toxic refrigerants such as propane, ammonia, and other environmentally friendly alternatives. By minimizing refrigerant charge requirements, these heat exchangers help meet stringent safety and environmental regulations, ensuring compliance with modern standards.

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Serpentine microchannel coil

SERPENTINE CONDENSER / EVAPORATOR DESIGN

A serpentine heat exchanger is a highly efficient solution, typically composed of a single microchannel tube (per circuit) bent into a serpentine shape, fin strips, and inlet/outlet connection pipes. All components are integrally brazed in a controlled atmosphere brazing (CAB) furnace.

  1. Microchannel tube bent into a serpentine shape
  2. Flat or louvered fins
  3. Inlet/outlet connections
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Features and Advantages

Serpentine coils are the smallest and most versatile heat exchangers in the industry, designed for use in refrigerant condensers, evaporators in compressorized and pumped-loop refrigerant systems, and non-condensing cooling applications. These compact and efficient microchannel heat exchangers are engineered to deliver maximum heat transfer, exceptional reliability, and easy integration into various systems.

  • Selection of aluminum alloys, including long-life alloys
  • Refrigerant compatibility: HFCs/HFOs, natural gases
  • Single- or multiple-circuit designs
  • Designs with multiple coil cores
  • Selection of flat or louvered fins
  • Connections made from copper or aluminum
  • Mountings made to order
  • Anti-corrosion coatings

Applications

Serpentine heat exchangers are ideal for compact heat rejection solutions, serving as condenser or evaporator coils in both stationary and mobile systems. By utilizing serpentine microchannel heat exchangers, thermodynamically efficient yet flammable refrigerants can be safely extended to more applications, thanks to the reduced internal volume of the coil and lower refrigerant charge. Common applications include:

  • Electronics cooling
  • Medical applications
  • Laser cooling
  • Military systems
  • Rack-mounted cooling solutions
  • Portable cooling units
  • Beverage and ice-making applications
  • Fractional horsepower equipment

PRODUCT SPECIFICATIONS

Min/Max width [mm]

FROM 50 TO 500

Min/Max height [mm]

FROM 50 TO 400

Design

SINGLE-/MULTI-CIRCUIT

Tube width [mm]

12.0 • 16.0 • 20.0 • 25.4 • 28.0 • 32.0 • 36.0

Tube spacing [mm]

7.8 • 9.3 • 9.4 • 9.8 • 10.0

Fin type

FLAT • LOUVERED

Fin pitch [FPI]

10.0 • 12.7 • 16.5 • 17.0 • 18.0 • 19.5 • 21.0 • 23.0 • 24.0 • BY REQUEST

Tube material(s)

AA3102 • HA9153A • AA3F03 • AA3F05 (TEMPER H112) ZINC ARC SPRAY

Fin material(s)

AA4343 • AA3003 • FA7971 (TEMPER H14)

Design pressure [bar]

32 • 45

Refrigerant

HFC • HFO • NATURAL

Protective coating

E-COATING • TCP-COATING • NANO-COATING • UV-PROTECTION

Special coating

HYDROPHILIC • HYDROPHOBIC • PAINT

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