Loop thermosyphons, also referred to as separated thermosyphons, consist of distinct evaporators and condensers linked by tubes that facilitate the circulation of either vapor or liquid. This adaptable design enables passive heat transfer over long distances without requiring additional energy.
These systems can vary in size, ranging from large-scale industrial applications, where the heat source and the heat sink are widely spaced, to compact designs used for cooling electronic components. A key advantage of loop thermosyphons is the ability to design the evaporator and condenser independently.