Plate-Helical Type Finned Coils

Coils are used in many diverse applications, each having their own unique challenges. Super Radiator Coils plate or helical style of fin, as well as various tube patterns, allow our coils to easily adapt and meet such challenges.

Plate Fins – Each fin is cut from a sheet of flat material, then punched in a specific pattern that accommodates all the coil tubes. This is similar to stacked sheets of ring binder notebook paper. Over 20 different combinations of tube sizes and center patterns are available.

Helical Fins – (Also referred to as “Spiral Wrapped”), A narrow strip of material is tension wound onto individual coil tubes, like threads on a screw. Individually finned tubes can be positioned on nearly any desired tube center distance.

These are the most common fin styles on coils, each having its advantages, and allowing Super Radiator Coils to design the right coil for your particular application, and your special requirements.

Plate Fin Advantages	Helical Fin Advantages
Low air friction	Increase thermal conductivity
Easy to clean and traps less dirt	Less fin material
Easy to apply coatings	Able to replace a single damaged tube
Tubes interlocked together	Compact fin bundle
Better vibration/tube sag strength	Vary tube face and row centers (Closer fit for replacement coils)
Wide fin spacing	Maintain fin bond at high temperatures
Handle ice and frost buildup	Use exotic tube materials
Tight fin-to-tube bond	Use extremely thick walled tube or pipe
Allows surface enhancements for increased thermal performance	Reverse tube pitch to drain multi-row coils for vertical airflow
Hydrostatic leak test each tube (standard)	Accommodates header and tube thermal expansion on tall/long coils
	Position headers far from the cell

Plate fins are also available with optional surface enhancements.

Embossed
Corrugated Wave Pattern
Sine Wave Pattern
X-Fin^TM (Louvered)

These create different air flow patterns, boosting the coils ability to transfer heat. But they also create more air resistance. So the coil design has to balance its size, fin density, and fin enhancement to an acceptable air friction that the fan or system can accommodate.

These coil fin styles and enhancements are available on our basic coil product lines. They are also offered on many custom/specialized coils, depending on the tube size and materials required.

If you have any questions as to which style or enhancement is best for your coil application, please contact a Super Radiator Coil sales representative or our nearest facility .

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