Coil Tubing

Coil tubing refers to a continuous length of metal tubing, typically formed into a helical or serpentine configuration, that serves as the primary heat exchange element in heating coils. It functions by circulating a thermal fluid (such as water, steam, oil, or refrigerant) through its interior, transferring thermal energy to or from the surrounding environment via conduction and convection. The tubing's geometry maximizes surface area contact with air or process fluids, enhancing heat transfer efficiency while maintaining structural integrity under thermal expansion and pressure variations.

Coil tubing operates on the principles of conductive and convective heat transfer. A thermal medium flows through the tubing, transferring heat through the tube wall to the external environment (in heating applications) or absorbing heat from it (in cooling applications). The coiled design increases turbulence in both the internal fluid and external air/fluid flow, improving heat exchange rates. Thermal energy transfer is governed by temperature differentials, flow rates, and the thermal conductivity of the tube material.