A two-phase closed thermosyphon with an adiabatic section using a flexible hose and R-134a filling

This research aimed to investigate the effects of bending and tilting in a flexible hose thermosyphon (TS) on thermal performance. The adiabatic section of the TS was constructed of a Teflon hose with an inner diameter of 12.7 mm, while the evaporator and condenser were made of straight copper tubing with an identical diameter of 17.4 mm. The proposed TS was charged with R-134a refrigerant. The effects of bending positions and tilt angles on...