- 學位論文
奈米微粒流體應用於光電散熱元件之實驗分析
The Experimental Analysis of Application on Cooling of Electronic and Optical Device with the Nanofluid
摘要
目前已知在工作流體中，例如水或有機溶劑裡，加入懸浮的奈米粒子，可增加液體原本的熱傳導係數，這種加入懸浮奈米粒子的液體被稱為「奈米流體」。在近幾年的研究文獻中，可知奈米流體的熱傳導係數之所以會比一般流體好的原因，主要是奈米粒子的團簇效應及擴散效應。 研究中將以應用奈米流體於一種新型雷射二極體之封裝基材，此構型為微型之碟形熱管設計(DMHP)，測試在充填入自行製作的奈米流體後，所製作的奈米金直徑可控制在3奈米(±兩奈米)到100奈米(±10奈米)，主要是以比較微型之碟形熱管與傳統圓形熱管加入奈米流體和純工作流體後的熱阻值與不同之熱傳特性，作為研究重點之一。 研究中亦進行一系列奈米流體基本流體性質的量測與計算，並探討其特性。另外進行奈米流體的池沸騰效能之研究，測試奈米流體對沸騰的影響。
並列摘要
It is well known that the thermal conductivity of a working fluid, such as water or organic solution, can be significantly improved by adding suspended nanoparticles. The fluid with added nanoparticles is termed “nanofluids”. After investigations conducted to study the thermal conductivity of nanofluids in the past five years, the factors for a higher thermal conductivity of nanofluids than that of pure fluids can be attributed to both cluster and diffusion effects of nanoparticles. In this proposal, the nanofluid will be applied to a novel packaging base for a laser diode. This packaging base is essentially a miniature disk-type heat pipe with radiating microchannels from the center to the peripheral. The added gold nanoparticles with diameter ranging from 3 nm (±2nm) to 80 nm (±10nm) are fabricated in our own laboratory. In the first year, the primary goal is to compare the thermal resistance and maximum heat flux of miniature disk-type heat pipe (DMHP) and traditional heat pipes with and without nanoparticles. If the thermal performance of DMHP and traditional heat pipes can be enhanced significantly by adding nanoparticles into the working fluid, one can foresee the potential market value of nanofluids in the cooling applications of electronic devices. After a study on the property of nanofluids, this project will proceed to a series studies on the fundamental thermal properties of nanofluids, included the calculated and measured data. This project will research on the effect of pool boiling of nanofluids.