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Experimental investigation on a loop thermosyphon with three evaporators: Unique startup and oscillation phenomena.

Author(s) : ZHANG H., SHAO S., XU H., et al.

Type of article: Article, IJR article

Summary

Loop thermosyphon with multiple evaporators has tremendous potential in applications that involve multiple heat sources. In this paper, a loop thermosyphon with three evaporators is investigated experimentally. Unique phenomena of startup and oscillation compared with common loop thermosyphons are reported. In the startup process, a unique phenomenon called “sudden temperature change” is found. This phenomenon occurs in a temporary state in the startup, when the temperature differences between the evaporators without heating power and with heating power reach certain range (-2.6?°C to 0.8?°C in this experiment). In the quasi-steady state, an oscillation map which shows the range when oscillation occurs is obtained. Compared with only one evaporator with heating power, simultaneous heating on multiple evaporators reduces the oscillation frequency, enhances the oscillation amplitude and sometimes makes it irregular, due to the interaction between the evaporators. Also, for every two adjacent evaporators, the phases of oscillation are almost opposite.

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Pages: 363-370

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Details

  • Original title: Experimental investigation on a loop thermosyphon with three evaporators: Unique startup and oscillation phenomena.
  • Record ID : 30025519
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 99
  • Publication date: 2019/03
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.12.016

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