Open AccessPerformance of a small diameter two-phase closed thermosyphon in geyser boiling condition
Author(s) -
Nelson Yurako Londoño Pabón,
Gabriel de Deus Vieira,
Kênia W. Milanez,
Marcia Mantelli
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1139/1/012014
Subject(s) - thermosiphon , condenser (optics) , boiling , evaporator , materials science , mechanics , adiabatic process , thermodynamics , working fluid , thermal , heat transfer , physics , optics , heat exchanger , light source
In the present article, the geyser boiling phenomenon is experimentally investigated in a small diameter two-phase closed thermosyphon. The studied thermosyphon has an inner diameter of 4.8 mm and total length of 918 mm. Three specific filling ratios and four temperatures for the thermal bath used to provide cooling water to the condenser were tested. Power was inputted in steps of 20 W, up to 100 W. Variation of the temperatures on the walls of the evaporator, adiabatic and condenser sections as well as variations on pressure, obtained from a pressure transducer installed on the thermosyphon, indicated the presence of Geyser boiling. The results show that the studied variables affect directly the intensity and periodicity of the geyser boiling phenomenon.