Air cooler for CO2



Liquid carbon dioxide, as the coolant, applied to air cooler for CO2, is applicable to different cold storage and food processing plant; it has great advantage in safety, environmental protection, energy conservation; its stainless steel tube for heat exchange can ensure health and safety.
Product features:
● Excellent chilling effect, low noise, long cooling range and stable operation
● Floating coil technique, safe and reliable structure and long service life
● Forward fin arrangement to ensure minor temperature difference between fin surface and inlet air and slower the frosting
● Copper pipe can be selected as heat exchange tube and aluminum sheet with hydrophilic film as the fins. Italian tube expanding equipment and technique are employed to ensure high heat transfer efficiency of evaporation coils
● Automatic welding process and equipment ensures product quality
● The housing can be made of galvanized sheet covered with electrostatic powder paint or stainless steel plate
● Stainless connectors and fasteners are adopted
● High-quality low-noise Germany axial flow fan is employed to ensure service life
● Electric heating defrosting or air defrosting method is adopted
● Versatile product type and extensive application

Model Description:

Numbering method of models is as follows:




Specific contents


Abbreviation of company brand


Installation way

D—ceiling L—floor stand

C—side blowing DS—ceiling double-blowing

DG—suspended double blowing DX—ceiling side blowing

Axial flow fan model

Common models: 035, 040, 045, 050, 063, 071, 080, 091

Diameter of fan impeller (unit: cm)

Nominal evaporation area

E.g.: 100

Unit: m2

Refrigerant or secondary refrigerant

A—ammonia F—Freon

W—water (secondary refrigerant) B—saline (secondary refrigerant)

G—ethylene glycol (secondary refrigerant) C—CO2 liquid


W—water defrosting E— electrical defrosting

H—hot gas defrosting (hot ammonia or hot Freon)

WH—combination of water deforesting and hot gas deforesting

G—ethylene glycol solution deforesting (single circulation system)

N— air deforesting

Number of axial flow fan

E.g.: 1, 2, 3, 4…

Fin spacing (or variable spacing) and number of fin dies

Fin spacing (or variable fin spacing), e.g.: 06, 08, 10, 12, 14, 0612, 0812…

Number of fin dies: A—Ø 20×60×51.96, staggered

B—Ø 20×60×60 forward

C—Ø 16×50×50正排
C—Ø 16×50×50 forward

Unit: mm

Material of heat exchange tubes and fins

L—aluminium tube + aluminium sheet G—steel tube + steel sheet

C—copper tube + aluminium sheet SL—stainless steel tube + aluminium sheet

SS— stainless steel tube + stainless steel sheet

For example, SD071-200AW/308BL is explained as follows: S is the initial of brand Snowkey, D indicates ceiling installation, 071 stands for the model of the axial flow fan with impeller diameter of 71 cm, 200 indicates the evaporation area is 200m2, A indicates the refrigerant is ammonia, W indicates water defrosting, 3 indicates 3 axial flow fans, 08B indicates the fin spacing is 8 mm and the number of fin dies is Ø 20×60×60 in forward arrangement, and L indicates that the air cooler is provided with aluminium tube + aluminium sheet.


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