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

César Manuel Valencia-Castillo; Giuseppe Zummo; Luca Saraceno; Felipe Noh-Pat; Pedro Cruz-Alcántar

doi:10.37636/recit.v6n2e250

Authors

César Manuel Valencia-Castillo CARHS https://orcid.org/0000-0003-3831-8121
Giuseppe Zummo Energy Technologies Department, ENEA, Via Anguillarese 301, 00123, Roma, Italia
Luca Saraceno Energy Technologies Department https://orcid.org/0000-0001-8378-1794
Felipe Noh-Pat Facultad de Ingeniería, Universidad Autónoma de Campeche, Predio s/n Col. ExHacienda Kalá, 24085 Campeche, Campeche, México https://orcid.org/0000-0003-1981-8323
Pedro Cruz-Alcántar COARA, Universidad Autónoma de San Luis Potosí, Carr. Cedral Km 5+600, 78700 Matehuala, San Luis Potosí, México https://orcid.org/0000-0001-9363-494X

DOI:

https://doi.org/10.37636/recit.v6n2e250

Keywords:

Micro-evaporator, Flow boiling, Numerical simulation, Subcooled liquid flow, Two-phase flow

Abstract

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.

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