Fin Material Options
Materials: copper, aluminium
Different geometries
Special treatments including hydrophillic & pre-painted
Main Product Groups
Water Coils (Mono Phase)
Compatible with most fluids in the liquid state e.g water, water-glycol mixtures, oil, diathermic fluids, etc.
Phase Changing Coils
Evaporators, condensers, reversible for heat pumps. Compatible with all synthetic refrigerants (including A2L), propane & CO2
Shaped Coils
Evaporators, condensers, reversible for heat pumps; Compatible with all synthetic refrigerants (including A2L), propane and CO2
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.
SURFACE TREATMENTS
As the market is becoming more and more demanding in the field of coils protections against corrosion, 4D Coils has developed a strong ability in selection, quotation and supply of different types of coils protections, in order to respond to customers requirements, including (but not limited to) the following:
❖ Heresite
❖ Heresite + UV
❖ Epoxy painting – Pulver
❖ Epoxy painting – Cataphoresis
❖ Epoxy painting – Cataphoresis + UV
❖ Electrofin
❖ Electrofin + UV
❖ Thermoguard finguard
❖ AquaAero
❖ Blygold
Material 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.
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Fin material options
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Customisable headers
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Surface treatments
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Tube configuration options
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Highly customisable frame
| Copper | K65 | Aluminium | Aluminium Pre-Painted | Aluminium Hydrophilic | Aluminium Hydrophobic | Galvanised Steel | Stainless Steel | Brass | |
| Tubes | ✓ | ✓ | |||||||
| Fins | ✓ | ✓ | ✓ | ✓ | ✓ | ||||
| Frame | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Tube Geometry
4D Heat Exchanger Coils are available in upto 7 tube diameters and 16 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
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
Brochure & Coil Enquiry Specification Form
Download
Click to download your copy of the 4D Heat Exchanger Brochure.
Format: PDF
File size: approx 3 MB
Download
Click to download Coil Enquiry / Specification Sheet
Format: PDF
File size: approx 750 kB
