AlfaSolar SD

Alfa Laval Solar S dry coolers have a modular and compact design, with high efficiency low noise EC-motors. The ideal choice for HVAC and refrigeration applications. In the processing industry, dry coolers are suitable for closed circuit cooling of various process liquids. With a wide range of sound pressure level alternatives, these units are particularly suited to demanding, noise sensitive environments. Alfa Laval Solar S dry coolers are available for both horizontal and vertical airflow.

Solar S 640x360


Standard configuration

  • Coil

    Coil manufactured from smooth copper tubes and corrugated Alu-fins, standard fin spacing is 2.3 mm. Flanges PN10/16 according to DIN 2642.

  • Casing
    Casing and framework of corrosion resistant, galvanized sheet steel (GS).
  • Fan motors
    High efficiency Axial EC fans diameter 910 mm, in a range of different fan speed executions, 1 to 14 fans. Motors with external rotor, protection class IP-55, class F insulation. All fans have corrosion resistant fan blades and fan guards.


For a full overview of all available options and additional technical specifications please refer to the product leaflet.




  • All liquids that do not corrode copper
  • Capacities: 40 up to 1,310 kW
    (water, EN1048)

Selection tools

AlfaSelect Air

These air heat exchanger products can be configured and selected using the AlfaSelect Air selection tool.
> AlfaSelect Air 

Cold Room Calculator

Mobile app for iOS & Android to calculate the expected heat load for your cold room.
Cold Room Calculator

Additional product information

Find manuals, electrical drawings, CAD drawings, High Resolution pictures and certificates.

Technical documentation

How it works

Alfa Laval finned coil air heat exchangers have been designed to achieve an optimized exchange of thermal energy between air and a refrigerant or fluid. The ‘heart’ of our air heat exchangers is the finned coil, built up from a circuit of interconnected tube serpentines and fins to increase the heat exchanging surface. Thanks to the combination of key design variables (coil materials, coil geometry, casing design, fan type), air units are very versatile heat exchangers with a great variety of applications in many industries. Alfa Laval supplies finned coil air heat exchanger products for a wide variety of applications.

Air-cooled liquid coolers (radiators/dry coolers)

Air heat exchangers may be used to cool various process liquids. For this application hot process liquid flows through the tubes. This liquid is cooled by the relatively cold ambient air that is forced through the coil.
Air heat exchangers for process liquid cooling are referred to as 'radiators'. Air-cooled liquid coolers for HVAC applications and total energy systems are referred to as 'dry coolers'.

heat transfer