Trane uses a patented Spine Fin Technology as opposed the the "Plate Fin" technique that is used by the competitors. Here are the reasons why.
Trane Coil Technology Features One-Third The Number Of Brazed Joints.
Spine Fin has an extremely low leak potential. Coils are more prone to leaking at joints, and Spine Fin with Woven Coil Technology has far fewer joints than plate fin. That�s because Spine Fin tubing is manufactured in continuous lengths. Brazed connections are required only at the coil (or circuit) inlet and outlet.
Elimination of end-turns used in copper tube plate fin designs permits a dramatic reduction in brazed joints and potential leaks in this design. Of course fewer leaks increases system reliability and durability. This also means a longer compressor life, because the introduction of moisture and contaminants into the sealed system is prevented.
In contrast, plate fin coils are made by stacking flat fins on parallel tubes. Each tube pair requires an end-turn to complete the refrigerant circuit. A typical 2.5 ton air conditioner or heat pump requires 30 or more brazed joint connections. A modern Trane unit of the same size requires about 10 joints or a third of the joints. Plate fin coils have three times the leak potential over Trane Spine Fin Technology.
Woven coil technology is the newest generation of Spine Fin. The woven coil design weaves a continuous roll of Spine Fin in a layered configuration, creating an even greater surface area. This greater surface area results in increased efficiency and a reduced cabinet size.
How Does Spine Fin® Prevent Efficiency Loss?
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It is designed for leak resistance.
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It is made with corrosion resistant materials and innovative construction techniques.
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It is housed in an enclosed, protective cabinet. And, it is cleanable.
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On-going research and development keep Spine Fin on the leading edge.