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Usually in the refrigeration market, metal foil tapes are used to attach tubes, channels or coils expanding the area of thermal exchange. In the case of application in coils, the increase of the thermal efficiency is due to the system working as a secondary evaporator.

It is important to take some specific cares during the application of aluminum tape to tubes and cooling boxes to ensure that they are free of contaminants such as dust, oils, and lubricants that could decrease tape adhesion. In addition, it is necessary to check if the refrigerator box has paint that could acts as an insulator decreasing the thermal conduction thus affecting the system performance.

Normally, the aluminum tapes used to attach the tubes to the cooling boxes have acrylic adhesive and have a thermal contact resistance of magnitude 7 x 10-5 m² K / W. For the most part, when compared to the system's thermal resistances, such as heat transfer in the condenser tube (R ~ 10-3 m² K / W) and heat transfer in ambient air (R ~ 10-1m² K / W), resistance of the adhesive tape can be disregarded .

In this analysis, we will consider the operating system of a condenser (heat exchange with the external environment). In this case, the refrigerant fluid, passing through the capillary tube is hot. The heat flow will then be as follows: heat will flow from the fluid

to the adhesive tape, and in the sequence the heat will be transmitted to the wall of the refrigerator box, which in turn will dissipate it to the external environment. In this way, the heat will be removed from the system.

There are benefits in using aluminum tapes in refrigeration systems, for the fixation of evaporator and condenser coils, where the tape acts as a fin and improves the thermal efficiency of the system. The thickness and width of the tape are factors to be considered in the assembly, as they have direct impact on the performance of the refrigerator. Another important role of aluminum tape is to prevent the insulation material (usuallypolyurethane foam) from sticking between the coils and the wall of the cooler box during the injection process of the polyurethane foam, which results in a deficiency in the system.

Today there are several options of metal foil tapes, with different types of adhesives,backings and metal thicknesses. Even in automated systems, aluminum tapes can beused due to the new tape structures with reinforced backing.