SpiroSwirl™ Coil-in-Shell
High-Efficiency Helical Coil Heat Exchangers for Compact Thermal Systems
Tube Tech® SpiroSwirl™ Coil-in-Shell units feature precision-formed helical coils housed inside a robust shell, engineered to deliver superior heat transfer in compact footprints.
The swirling flow path increases turbulence, enhances thermal exchange and minimizes fouling - making them ideal for high-performance heating, cooling and process applications. These highly Efficient Liquid to Refrigerant Heat Exchangers can be used in any application where air or water must be heated or cooled.
Operating Parameters
Construction Details
SpiroSwirl™ Coil-in-Shell - Model Performance Table
| Model | Model No. | Heating | Cooling | Water Flow | Gas Nozzle | Liquid Nozzle | Pressure Drop |
|---|---|---|---|---|---|---|---|
| 1 TR | SP01-CuPYSWC / SP01-CuPYSC | 3.5 kW | 2.5 kW | 0.7 m³/h | 19.05 mm | 12.7 mm | 11 kPa |
| 2 TR | SP02-CuPYSWC / SP02-CuPYSC | 7 kW | 3.5 kW | 1.0 m³/h | 19.05 mm | 12.7 mm | 60 kPa |
| 3 TR | SP03-CuPYSWC / SP03-CuPYSC | 10.5 kW | 7.6 kW | 1.8 m³/h | 19.05 mm | 12.7 mm | 74 kPa |
| 4 TR | SP04-CuPYSWC / SP04-CuPYSC | 14 kW | 10.1 kW | 2.2 m³/h | 19.05 mm | 12.7 mm | 31 kPa |
| 5 TR | SP05-CuPYDWC / SP05-CuPYDC | 17.5 kW | 13 kW | 3.0 m³/h | 19.05 mm | 12.7 mm | 57 kPa |
| 6 TR | SP06-CuPYDWC / SP06-CuPYDC | 21 kW | 16 kW | 3.6 m³/h | 19.05 mm | 12.7 mm | 76 kPa |
| 7 TR | SP07-CuPYDWC / SP07-CuPYDC | 24.6 kW | 19 kW | 4.0 m³/h | 19.05 mm | 12.7 mm | 88 kPa |
| 8 TR | SP08-CuPYDWC / SP08-CuPYDC | 28 kW | 21 kW | 4.3 m³/h | 19.05 mm | 12.7 mm | 75 kPa |
| 10 TR | SP10-CuPZDWC / SP10-CuPYDC | 35 kW | 26.5 kW | 5.0 m³/h | 19.05 mm | 12.7 mm | 87 kPa |
| 12 TR | SP12-CuPZDWC / SP12-CuPZDC | 47 kW | 35 kW | 6.5 m³/h | 25.4 mm | 15.88 mm | 56 kPa |
| 15 TR | SP15-CuPZDWC / SP15-CuPZDC | 54 kW | 42 kW | 7.2 m³/h | 25.4 mm | 15.88 mm | 96 kPa |
Heating rating conditions: Dry bulb 7°C, wet bulb 6°C, inlet water 40°C, outlet water 45°C
Cooling rating conditions: Dry bulb 35°C, wet bulb 24°C, inlet water 12°C, outlet water 7°C
How to Read SpiroSwirl™ Model Numbers
Example: SP05-CuPYDC is a 5 TR SpiroSwirl™ Coil-in-Shell with copper tubes, plain internal surface, 19.05 mm tube diameter, double coil rows and an accumulator.
Key Features
- • Helically wound coil design for increased turbulence & thermal efficiency
- • Compact shell design enabling high capacity in limited space
- • Reduced fouling and optimised flow distribution
- • Excellent performance with water, steam, oils, coolants & process fluids
- • Manufactured with tight dimensional accuracy & controlled coil pitch
- • Available in copper & CuproNickel tubing
- • Custom coil geometry and shell configurations available
- • Suitable for use as condenser or evaporator
- • Enhanced surface tubes provide surface extension of more than 3.5 times that of smooth tubing
- • Internal rifling ensures water turbulence even at low flow rates
- • No oil trapping due to close tolerances in refrigerant path
- • Low water side pressure drop reduces pump size and operating costs
- • Continuous water coils with no internal joints for more strength and less chance of leaks
- • Compact cylindrical shape easy to insulate
- • Works efficiently in both vertical and horizontal positions
Applications
Frequently Asked Questions
Can SpiroSwirl™ Coil-in-Shell work as both a condenser and an evaporator?
+
Yes. The same compact design works as a water-cooled condenser or as an evaporator (water chiller), depending on how it is connected in the system.
Which refrigerants can SpiroSwirl™ Coil-in-Shell be used with?
+
It is rated for R22, R134a, R407C and R410A. On the water side it works with domestic water, ground water and glycol antifreeze solutions.
What capacities are available?
+
Standard models run from 1 TR to 15 TR, with heating capacity from 3.5 kW to 54 kW and cooling capacity from 2.5 kW to 42 kW. Custom coil and shell configurations are available on request.
What pressures is it rated for?
+
The refrigerant (shell) side is rated up to 50 bar and the water (coil) side 6 to 10 bar. Every unit is pressure tested after assembly, and the design follows ASME Section VIII, IS 2825 and EN 13445.
Is SpiroSwirl™ Coil-in-Shell suitable for heat pumps and data center cooling?
+
Yes. Typical uses include water-source and air-source heat pumps, industrial chillers, computer room and data center cooling, heat recovery, hot water generators and marine condensing units.
What materials are used?
+
The coil is made from copper (Cu-DHP) or cupronickel (90/10 or 70/30) low-fin tubes, with or without internal grooves. The shell is carbon steel. The water coil is continuous, with no internal joints.
How do I read a SpiroSwirl™ model number?
+
For example, SP05-CuPYDC means a 5 TR SpiroSwirl™ unit with copper tubes, plain internal surface, 19.05 mm tube diameter, double coil rows and an accumulator. The full guide is shown below the performance table.