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Core function
As with any evaporator coil, Randell coils absorb heat from inside a refrigerated unit to cool the interior.
Heat absorption: The coil uses liquid refrigerant to draw heat out of the air inside the unit.
Phase change: As the refrigerant absorbs heat, it evaporates, turning from a liquid into a gas.
Cooling circulation: In many models, the cooled air is circulated via "cold force blown air" sent down the cold piping, which creates a frost line on the copper tubing to cool items.
Refrigeration cycle: The refrigerant is then carried to the condenser coil, which releases the heat outside to complete the refrigeration cycle.