Water Defrosting Air Cooled Copper Tube Fin Type Evaporator Customized Metal Sheet Embossed Aluminum Sheet For Cold Room

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General Features

DL air cooler for *5~*5 degree C, mainly use for chiller room.

DD for **5~**5 degree C, mainly use for freezer room.

DJ for **5~**0 degrees C, mainly use for blast freezer room

Cabinet of magnesium steel, corrosion-proof

Fin space: 4.5mm, 6.0mm and 9.0mm

Refrigerant: R*2, R**4A, R**7A, etc

Stainless steel heater, defrosting evenly

Double water receivers, more stable

Mechanically expanded pipes with Aluminum fins

Long distance air throw is optional

Coils

 

Manufactured from 9.*2 " o.d. copper tube mechanically expanded into heavy gauge aluminium plate fins will fully collared holes to ensure an efficient and permanent bond. Fin spacings 4 mm, 6 mm or 8 mm.  Copper tube suction headers and distributors are individually sized to suit the exact operating conditions. Brazed joints are made with silver bearing copper alloy. Coils are pressure tested to *6 bar g, vacuum dehydrated and sealed with a dry nitrogen charge.

 

Casting:

 

Galvanised sheet steel white polyester powder coated for flush ceiling mounting or base mounting onto steelwork.

 

Axial Fan

 

Axial flow, non overloading aerofoil fans with polypropylene variable pitch blades secured into diecast aluminium hubs, keyed and locked onto the motor shaft. The fans run in a formed bell mouth orifice for efficiency and low noise.

 

Motors

 

Totally enclosed class F insulated metric frame, **0/**0/3/*0 Hz IP*5.

 

DEFROST OPTIONS

Electric

For efficient defrosting low power density **0/**0V 1 ph stainless steel sheathed elements are provided in the coil and draintray.  Heaters are wired to a terminal box for 3 phase + neutral supply.

ED 1 Light duty defrost for marginal room temperatures.

ED 2 Normal duty defrost for low temperature applications.

FP Fan Peripheral Heaters - for applications with room temperature below zero.

Reverse Cycle / Hot gas

Coils may be circuited for reverse cycle or hot gas defrost with electric elements or hot gas tubes in the drain pan.

HGE Hot gas coil, electric drain tray HGD Hot gas coil and tray RCE Reverse cycle coil, electric tray RCD Reverse cycle coil and tray

 

NOISE LEVELS

 

The noise levels stated are at a distance of 3 m from the unit at an angle of *5° to the horizontal in free field conditions with no reflections. These are intended to be used as a guide for comparison purposes. In practice the noise generated will be reflected off the enclosure surfaces and may be absorbed by the product within the room. For applications where noise levels are critical lower speed fans can be offered and the advice of an acoustic specialist is recommended.

 

Easy Clean Casing

Accessible clean in position drain pan with *5 mm gap under coil to allow unrestricted access for cleaning and inspection. Access to fan plenum.

Plain Galvanised Casing

NS4 Marine Grade Aluminium Casing.

Stainless Steel Casing.

Insulated Drain Pans

Coils circuited for chilled water / glycol

 

AIR THROW

Cooler air throw is dependant upon coldstore design, product loading and positioning of coolers. Generally one metre space above product with no obstructions allows the air to travel considerable distances, providing that the room is tall and adequate space is allowed to return air at low level and velocity. Low head rooms need careful cooler siting and some means of separating discharge and return air. Cooler fans suck air back as well as blow.