Abstract
This study used numerical simulation and Taguchi method to analyze the influence of different factors, including vacuum degree, fill ratio and aspect ratio and inclined angle, on the heat transfer characteristics of low-watt thermosyphon in natural convection. The mass and energy source terms were added in the continuity and energy equation to simulate the exchanges between vapor and liquid phases. The comparison analysis of computed result and experiment data showed that the numerical model used in this study is appropriate to the analysis of physical mechanism and heat transfer property of thermosyphon. The results concluded that inclined thermosyphon has better thermal performance. Based on Taguchi method find that The best fill ratio was 90% when the vacuum degree was 35 torr, the aspect ratio was 9.8 and the inclined angle was 45 degree.
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