Experimental investigation on the instability of a two-phase loop thermosyphon with three evaporators

摘要

Two-phase loop thermosyphon with multiple evaporators is ideal device to achieve multi-sourceheat transfer and has great application potential. As there are parallel branches in the loop,unstable phenomena often exist. In this paper, the instability of a two-phase loop thermosyphonwith three evaporators is investigated experimentally. The results show that the oscillationfrequency increases while the amplitude almost remains constant with the increase of heatingpower; The oscillation frequency decreases slightly while the amplitude increases with the increasefilling ratio; In the oscillation, when the temperature of an evaporator reaches the peak value, thetemperatures of the adjacent evaporators reach the trough value.