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AlfaBlue BD

The AlfaBlue series is a wide range of heavy-duty dry coolers. Dry coolers are often used for cooling down condenser water in air conditioning and refrigeration installations. 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.

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Standard configuration

  • Coil
    Innovative coil design provides excellent heat transfer. In standard execution dry coolers are fitted with smooth copper tubing (1/2”, 3/8” or 5/8”) or stainless steel tubing (5/8”). Fins in aluminium or sea water resistant AlMg2.5 in different fin thicknesses and fin spacings, available in two fin designs:
    - Turbo fins for maximized capacity 
    - Industrial power fins for long lasting performance 
    Coil configuration optimized according to liquid flow. Separate connections in the D series provide the opportunity for independent operation of both coils.
  • Casing
    Frame construction provides high rigidity for protection against vibration and thermal expansion. Casing and framework of corrosion resistant pre-galvanized sheet steel (high corrosion resistance), epoxy coated white RAL 9002 on both sides. Separated fan sections.
  • Fan motors
    Available in four fan diameters (630, 800, 910 & 1000 mm) and five noise levels, power supply 400/50/3. Motors with external rotor, protection class IP 54 according to DIN 40050. Integrated thermo contacts provide reliable protection against thermal overload. EC fan motors available.


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: 16 up to 1028 kW
    (water, EN1048)

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

Find everything you need for your HVAC application in Alfa Laval's HVAC handbook.

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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'.

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