The Study of Design and Test in Water-Cooling Micro-Channel Heat Sink

• Main Authors: Huang Yu Jeng, 黃育政
• Other Authors: K. Z. Liang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/29754494149529304451

碩士 === 清雲科技大學 === 機械工程研究所 === 93 === The purpose of this research is to design a new heat sink of water-cooling. With the aid of CAE (Computer Aided Engineering), MEDM (Micro Electric Discharge Machining), and the concept of micro-channel design, a heat sink of water-cooling can then be built with the merit of a smaller volume and lower thermal resistance. In this study, the COSMOS FloWorks software is first applied to analyzing the thermal behavior of the heat sink. Also discussed in this study are parameters including input power, working fluids, flow rate and micro-channel geometries under force convection. The numerical results can be as reference to develop a new heat sink that has a high heat dissipation efficiency, and then the MEDM is applied to making the heat sinks of experimental model. The final part of this research is the measurement of its thermal resistance under the normal atmospheric temperature and the comparison with the data from the numerical simulation is made. From this paper, the experiment results indicate that the thermal resistance of heat sink can be decreased to 0.118 ℃/W at input power of 59.8W, flow rate of 0.9LPM. Similarly, we can obtain the good heat dissipation result in input power of 100W or 140W. The difference of experiment data and numerical simulation result will be diminished when we use pre-pressure and smearing thermal grease on heat sink.