Influence of the Heat Transfer Performance of Micro Vapor Chamber Having Various Flow Channels

• Main Authors: Ming-Hua Chan, 詹名華
• Other Authors: Jin-Cherng Shyu
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/kgwb76

碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 103 === Several Si-based micro vapor chambers having double-layer structure were developed in this study. The double-layer micro structure in those vapor chambers was fabricated with sandblasting process. The dimension of the micro vapor cahmbers was 60 mm  35 mm  0.75 mm with DI water as working fluid. The micro vapor chambers having three different types of microchannel, including parallel microchannel, converging microchannel and divergent microchannel, were tested with an input power beginning at 6 W and the thermal performance of those vapor chambers was compared. It was observed that the thermal performance of the those vapor chambers having different types of microchannel was different with identical vapor space design. with an input power of 32 W, the thermal resistance of the vapor chamber having parallel microchannels was 1.63 K/W with titled angle of 00, while that having divergent microchannels was higher than 1.63 K/W by a factor ranging from 27.63% to 42.48%. Similarly, the thermal resistance of the vapor chamber having convergent microchannels was also higher than that of the vapor chamber having parallel microchannel with titled angle of 00, whereas the thermal resistance of the vapor chamber having convergent microchannels was lower than that of the vapor chamber having parallel microchannel by a factor ranging from 0.81% ~ 13.40% with titled angle of 900.