Heat Exchanger Coils Water Coils DX Coils Condensers Dry Coolers

Heat Exchanger Coils

With a total of 5 tube diameters available in 10 geometries, we can optimize heat exchangers for any specific application including process cooling, HVAC Refrigeration & Air Conditioning.

Heating and Cooling coils; for use with primary fluids including water and oil
DX Evaporator and Condenser coils; using Group 1 & 2 refrigerants including CO2.

❖ Fully customizable to match requirements
❖ 10 geometries available to meet all performance and allow internal volume reduction
❖ 50 tubes available, smooth and internally grooved (rifled) tube
❖ 5 fin materials available to meet all thermodynamic and product life requirements
❖ High efficiency tubes and fins for increased heat exchange, to keep dimensions compact
❖ Choice of frame materials including galvanized steel, aluminum, stainless steel & copper
❖ Maximum pressure up to 80 bars
❖ Possibility of testing with helium test machine
❖ 10 surface treatments available to increase the life of the product in aggressive environments
❖ Finned lengths available from 80mm upto 11.5 Metres

4d condenser coils

Technical & Features

FINNED PACK

The finned pack consists of drawn tubes mechanically expanded into fins provided with self-spaced collars. This ensures optimal heat exchange between tubes & fins, plus regular spacing between fins.

FINS

Created by high precision molding of aluminium, pre-painted aluminium, hydrophilic aluminium and copper strips. The fins are corrugated so as to improve the secondary heat transfer coefficient without heavily affecting the air pressure drops. This allows for improved condensate drainage & prevents dirt from obstructing the finned pack. Also available are louvered fins, the structure of which increases heat exchange efficiency

TUBES

We only use high quality tubes sourced within Europe, which can be smooth or internally grooved on all diameters. The tubes are resistant to the vast majority of primary fluids in both heating and cooling applications alike.

FRAME

The frame can be of galvanized steel, aluminium, copper, brass, or stainless steel, manufactured through a process of punching and deep drawing. The frame protects the finned pack and fastens the heat exchanger to the rest of the system.

HEADERS

Headers are made of carbon steel or copper drawn tubes. The header collects all of the coil’s parallel circuits into one tube that will be connected to the main circuit of the equipment.

DISTRIBUTORS

We use brass Venturi-type distributors. Along with the brazed copper capillary tubes, these distributors optimize coolant distribution in the parallel circuits of evaporators.

REFRIGERANTS

In light of our commitment to product improvement & sustainability, 4D Coils uses materials that are compatible with new generation refrigerants, which ensure lower environmental impact and excellent performance.

Group 1 & 2 Refrigerants

R22 (Group 2)
R32 (Group 1)
R123 (Group 1)
R134A (Group 2)
R152A (Group 1)
R245A (Group 2)
R290 (Group 1)
R404A (Group 2)
R407C (Group 2)
R407F (Group 2)
R410A (Group 2)
R417A (Group 2)
R448A (Group 2)
R449A (Group 2)
R452A (Group 2)
R454A (Group 1)
R454B (Group 1)
R454C (Group 1)
R507A (Group 2)
R455A (Group 1)
R513A (Group 2)
R744 CO2 (Group 2)
R718 (Group 2)
R1233zd (Group 1)
R1234yf (Group 1)
R1234ze (Group 1)

QUALITY

We inspect for proper mechanical expansion of tubes into the fins; brazing of bends, connections & headers in an inert atmosphere; final pressure leak test in a water bath. During final inspection, the coil is checked against the customer’s specifications to ascertain its compliance.

Flexibilty

4D Heat Exchanger Coils are highly customisable to suit your specifications or application. Each coil is individually designed, with the fin material selected to take into account the environment in which it is to be located.

Tube material, diameter and wall thickness is selected with the medium, temperature and refrigerant or working pressure in mind and to customers specifications. Casing material can be galvanised or stainless steel to suit harsher operating environments.

Fin Material Options
Materials: copper, aluminium
Different geometries
Special treatments including hydrophillic & pre-painted
Customisable Headers
Materials
Diameters
Various types of construction
Surface Treatments
Heresite
Blygold
Cataphoresis
Tube Configuration Options
Materials: copper, aluminium, stainless steel
Diameters: ∅7, ∅7.94 (5/16″), ∅9.52 (3/8″)
Cutsomisable Frame
Fe Zn, Al, Aisi
Cu Zn, Cu

Tube Geometry

4D Heat Exchanger Coils are available in upto 5 tube diameters and 10 geometries with the following configurations to suit a variety of applications & standardised packaged heating & cooling products;

S22-7

∅7mm tubes, in the staggered geometry 25.00 x 21.65 mm with corrugated fins. Ideal solution for smaller sized condensers & heat exchangers which require lower internal volumes.

Diameter 7mm

Geometry 25.00 x 21.65

S22-8

∅5/16″ tubes in the staggered geometry 25.00 x 21.65 mm with corrugated and louvered fins. Ideal solution for small condensers with capacities upto 12 kW; fan coils and air heaters.

Diameter 5/16" (7.94mm)

Geometry 25.00 x 21.65

S22-10

∅3/8″ (9.52 mm) tubes in the staggered geometry 25.00 x 21.65 mm with corrugated and louvered fins, an ideal solution for medium sized condensers, fan coil units, heat pumps and unitary products.

Diameter 3/8" (9.52mm)

Geometry 25.00 x 21.65

S30-12

∅1/2″ (12.7mm) tubes, in the staggered geometry 35.00 x 30.31 mm with corrugated fins. Ideal solution for heat recovery systems, dry coolers with medium-high capacities.

Diameter 1/2" (12.7mm)

Geometry 35.00 x 30.31

L35-12

∅12mm tubes, in the square geometry 35.00 x 35.00 mm with corrugated fins. This geometry is an ideal solution for the production of evaporators in refrigeration applications.

Diameter 12mm

Geometry 35.00 x 35.00

S23-10

∅3/8″ (9.52 mm) tubes, in the staggered geometry 25.40 x 22.00 mm with corrugated fins. Ideal solution for small condensers & heat exchangers requiring lower internal volumes

Diameter 3/8" (9.52mm)

Geometry 25.40 x 22.00

Configurations Available

The table below summarises tube geometries & specifications available. With 5 tube diameters and upto 10 different geometries available, we can optimize heat exchangers for any specific application by selecting the appropriate material thicknesses, fin spacings etc.

Code	Tube Diameter	Geometry	Length	Tube Types	Tube Thickness – smooth	Tube Thickness – grooved	Fin Thickness Options	Fin Spacing Options
–	mm	mm	mm	–	mm	mm	mm	mm
S22-7	7mm	25 x 21.65	90-1000	Smooth / Grooved	0.25	0.31	0.10 / 0.12 / 0.15 / 0.18	1.6/3.2
S22-8	5/16″ 7.94mm	25 x 21.65	90-4600	Smooth / Grooved	0.28/0.41	0.33	0.10 / 0.12 / 0.15 / 0.18	1.6/6.0
S22-10	3/8″ 9.52mm	25 x 21.65	100-7350	Smooth / Grooved	0.28/0.35/0.5	0.33/0.4	0.10 / 0.12 / 0.15 / 0.18	1.6/6.0
S30-12	1/2″ 12.7mm	35 x 30.31	130-7350	Smooth / Grooved	0.30/0.50	0.40	0.11 / 0.15 / 0.18	1.6/6.0
L35-12	12mm	35 x 35	170-7350	Smooth / Grooved	0.32/0.5/0.7/0.9	0.38	0.15 / 0.18 / 0.20 / 0.25 / 0.28	2/12

Coil Selection Software

Dedicated heat exchanger software for thermodynamic calculations; developed in-house and continually updated for maximum ease of use. This ideal tool allows quick and simple calculations for all coil types; heating coils, cooling coils, evaporator and condenser coils. Whilst the software has a rich database of refrigerants and primary working fluid types used across a number of industry sectors, it also allows the user to create and use custom fluid types too.

♦ View and print in PDF format
♦ Save your selections
♦ Broad range of configuration options
♦ High reliability
♦ Sketch generator