International Journal of Power and Energy Research

The Effects of Microchannel Geometry on Phase Transition for Two Phase Flow in Microchannel Heat Sinks

Download PDF (581.7 KB) PP. 16 - 24 Pub. Date: January 26, 2018

DOI: 10.22606/ijper.2018.21002

Author(s)

Batan Le
Department of Thermal Engineering, Ho Chi Minh City University of Technology and Education, Vietnam
Vanmanh Nguyen
Department of Thermal Engineering, Ho Chi Minh City University of Technology and Education, Vietnam
Thanhtrung Dang^*
Department of Thermal Engineering, Ho Chi Minh City University of Technology and Education, Vietnam

Abstract

The effects of microchannel geometry on the phase transition between liquid and vapour for the two phase flow were investigated both numerically and experimentally. In the study the rounded edge rectangular microchannel heat sink was found to have the phase transition earlier than the rectangular one in both numerical simulation and experimental data by about 1.5 seconds. The outlet temperature and vapour quality of the rounded edge rectangular microchannel heat sink was higher than those obtained from the rectangular microchannel heat sink. Also, the phase transition curves achieved in the evaporation were parabolic in shape. The output vapour temperature achieved a steady state with the maximum value at around 2 minutes, 30 seconds. In addition the numerical results matched well with the experimental data. These numerical results have not yet been seen in literature reviews.

Keywords

Microchannel, two phases, temperature, numerical simulation, experiment

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