TY - JOUR
TI - Numerical-experimental study of the boiling heat transfer coefficient in a thermosyphon
AU - Biglia Felipe Mercês
AU - Dimbarre Victor Vaurek
AU - Bartmeyer Guilherme Antonio
AU - Dias Dos Santos Paulo Henrique
AU - Antonini Alves Thiago
JN - Thermal Science
PY - 2024
VL - 28
IS - 6
SP - 4759
EP - 4769
PT - Article
AB - Thermosyphons are passive heat exchanger devices that use the latent heat of  vaporization of a working fluid to intensify heat transfer. They consist of  a metallic tube, passed through a vacuum process, and filled with a working  fluid, and use the action of gravity to circulate the fluid internally. They  are used to enhance heat transfer in many industrial areas, such as  aerospace, electronics, and telecommunications, among others. In the  literature, several studies are related to the subject under study, both  experimental and numerical analyses. Still, there isn’t validation of the  results, especially when obtaining the boiling heat transfer coefficient.  Thus, the main objective of the present work consists of determining an  experimental test bench, from Dirichlet’s Condition, varying an evaporator  wall temperature (303.15, 313.15, and 323.15K) and water filling ratio (50  and 100% of the evaporator’s volume) into stainless-steel thermosyphon,  providing experimental data for validation of numerical simulations carried  out using the Ansys® FluentTM software. The comparison between numerical and  experimental results demonstrated good agreement validating the numerical  methodology.