Designs of Vertically Aligned Fe-filled Carbon Nanotube Forests Heater and the Analysis of Electrothermal, Heat Transfer Properties

• Main Authors: Chin-Yin Yang, 楊金穎
• Other Authors: 張所鈜
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/87567239935594319252

碩士 === 國立臺灣大學 === 機械工程學研究所 === 100 === Abstract Synthesis of Fe-filled Carbon Nanotube Forests is uncomplicated, there is no need to have some pre works for fabrication of Fe-CNT forests such as oxide buffer layer and metal thin film catalyst coating by E-beam evaporator, just using ferrocene power as catalyst can achieve. Carbon nanotubes have excellent electrical and mechanical properties, now adding the iron nanowire into hollow center of carbon nanotube can tremendously enhance the properties than before. B, Fe-CNTs have outstanding thermal properties including high axial thermal conductivity and high emissivity. But few research studies and heating applications use Fe-CNTs. This study mainly design Fe-CNTs heater and compare heating efficiency with commercial heater. The experiment result show the heating efficiency of Fe-CNT heater is similar to commercial metal-film heater in contact heating. The notable thing is Fe-CNTs heater has more efficient heating rate in the same electrical power compare with commercial heater in distanced heating, and the temperature difference can reach nearly 18℃ in the experimental design. It means that Fe-CNT heater in distanced heating can make the heated thing not only rising to high temperature more quickly but also achieving higher temperature with same power consumption. In vacuum environment, the Fe-CNTs heater can also perform its high heat radiation and uniform surface temperature of heater. Finally, according to thermal analysis and experiment result, we can prove the heater with high heating efficiency performance using Fe-CNTs.