Compact thermosyphon using refrigerant flow control

In a compact closed two-phase thermosyphon which consists of a multitube radiator and a refrigerant bath, it is observed that the heat radiation performance drops as the refrigerant bath becomes thin. We have found that this is due to vapor–liquid interaction and dryness in the upper side of the boiling area. We have also improved that heat radiation performance with a new refrigerant flow controller. ©1999 Scripta Technica, Heat Trans Asian Res, 28(8): 627–639, 1999