並列摘要
A 60 mm×33 mm×0.8 mm micro loop heat pipe (MLHP), consisting of an evaporator, vapor line, condenser and two liquid lines, was fabricated and characterized. The wicking structure consists of parallel V-grooves with a hydraulic diameter of 47 μm, 67 μm and 83 μm, and is formed by bulk silicon etching. The MLHP was realized by bonding a glass wafer onto a silicon substrate, so as to result in a transparent cover for two-phase flow visualization. Water and methanol were used as the working fluids. The test results showed that water demonstrates a wider heat load performance range (3.3W~12.96W) than methanol (1.2W~5.85W) for the MLHP with an evaporator area of 1 cm^2 and condenser temperature of 17℃. The best thermal resistance of the MLHP was 0.106℃/W, 64 times higher than that without fluid filling. The smaller diameter grooves caused the higher liquid capillarity and enhanced transfer capacity. It was observed that the presence of non-condensable gas negatively affected the reliability of the MLHP and significantly reduced the performance.
延伸閱讀
- Wang, C. S., Wang, Y. C., & Lee, S. R. (2009). Performance Testing of Loop Heat Pipes with Vapor Chamber in the Evaporator. 中國機械工程學刊, 30(5), 419-424. https://doi.org/10.29979/JCSME.200910.0007
- Uppala, R. (2004). Thermal Analysis of Closed Loop Pulsating Heat Pipe [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2004.01584
- 吳嘉達（2007）。Performance Test of a Novel Flat Heat Pipe with Parallel Channels〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-1411200715154606
- Kang, S. W., Yeh, H. M., Tsai, M. C., & Wu, H. H. (2019). Manufacture and Test of a High Temperature Heat Pipe. 淡江理工學刊, 22(3), 493-499. https://doi.org/10.6180/jase.201909_22(3).0010
- 黃俊穎（2008）。Simulation and Manufacturing of The Miniature Loop Heat Pipe〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2008.00560