塗裝單壁奈米碳管鰭片熱電致冷晶片散熱效率與熱變形之研究

林佳儒

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涂装单壁奈米碳管鳍片热电致冷晶片散热效率与热变形之研究

Investigation of Heat-Dissipation Efficiency and Thermal Deformation of TECs with SWCNT Coated Heat Sink

林佳儒 , 硕士　　导师：王伟中　　

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摘要 │ 参考文献 (78) │ 国际计量

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Thermoelectric cooler (TEC) is a device which converts electrical energy into heat energy. The primary principle of the TEC is the Peltier effect. Thermoelectric cooler is a sandwich structure consisting of many different materials. When a direct current is applied, thermal stress and thermal deformation are unavoidably produced in the TEC due to the temperature gradient. Moreover, due to the mismatch of thermal expansion coefficient between component materials of the TEC, the TEC may be out of work after an extended period of practice.
In this thesis, two sets of three dimensional digital image correlation (3D-DIC) systems were adopted to measure the deformation of two different TECs, i.e. TEC_A and TEC_B, of 127 pairs of p-type and n-type semiconductors with and without the heat sink, respectively. Strains of the TEC under different currents were measured, and the quality of the TEC was investigated by the strain and temperature distributions. Results showed that the strain becomes higher as the current increased. The quality of TEC_B was also found better based on results of the strain distribution.
To enhance the cooling effect, single-walled carbon nanotube (SWCNT) was used to coat on the surface of the heat sink, and the cooling effect of the heat sink was found successfully improved. The strain of the TEC is smaller when the SWCNT heat sink was added, and the overall temperature distribution was also decreased.
In the future, it is possible to use the SWCNT heat sink to replace the cooling fan for TECs under low and medium current. In addition to increase the service life of TECs, cost and the vibration produced from the cooling fan can also be reduced.

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[4] Y. L. Chang and W. C. Wang, “Thermal Deformation Measurement in Thermoelectric Coolers by ESPI”, Proceedings of SEM XI Congress on Experimental and Applied Mechanics, pp.162-171, Orlando, Florida, U. S. A., 2008
连结：
[5] 吴亭莹, “热电致冷器热变形之实验与数值探讨”, 国立清华大学动力机械工程学系硕士论文, 2010.
连结：
[6] 陈建良, “热电致冷器热变形之探讨”, 国立清华大学动力机械工程学系硕士论文, 2012.
连结：
[10] W. H. Peters and W. F. Ranson, “Digital Imaging Techniques in Experimental Stress Analysis,” Optical Engineering, Vol. 21, pp. 427-431, 1982.
连结：
[11] M. A. Sutton, W. J. Wolters, W. H. Peters, W. F. Ranson and S. R. McNeill, “Determination of Displacements Using an Improved Digital Correlation Method,” Image and Vision Computing, Vol. 1, pp. 133-139, 1983.
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使用DOI作为永久连结

引用含有DOI的文献

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。 如想对DOI的使用与概念有进一步了解，请参考 （ ） 。

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。