Simulación de un micro-evaporador para un micro-tubo horizontal circular de 1-mm

• DOI: 10.37636/recit.v6n2e250
• Publication Date: 2023-10-07T17:30:33Z
• Authors: César Manuel Vale...; Giuseppe Zummo; Luca Saraceno; Felipe Noh-Pat; Pedro Cruz-Alcántar
• Keywords: Micro-evaporator; Subcooled liquid flow; 0103 physical sciences; T1-995; Numerical simulation; TA1-2040; Flow boiling; Engineering (General). Civil engineering (General); 01 natural sciences; Two-phase flow; Technology (General)

Flow boiling into micro-channels is a good option of cooling solutions for electronic devices. Numerical simulations allow designing correctly before manufacturing. In this paper, the results of a steady-state one-dimensional simulation are presented for a single horizontal circular 1-mm tube. Through the refrigerant flows, two regions are distinguished: subcooled liquid flow and two-phase flow. Typical equations and correlations have been used for subcooled liquid flow; while one theoretical model has been used for two-phase flow. The results presented here are those by using perfluorohexane, which is used in the formulation of FC-72, a refrigerant for cooling electronic devices. For the range of tested parameters, the next conclusions come: i) from the point of view of choosing the pump, the highest subcooled level, and inlet pressure should be preferred; ii) in order to avoid the critical heat flux condition, the lowest inlet pressure should be preferred; iii) there is a contradiction for choosing the right inlet pressure because is opposite for the point of view of pump selection and critical heat flux condition.