有效移除熱電模組熱能之3D列印衝擊液冷散熱器的控制參數最佳化

Optimization of Control Parameters in a 3D Printed Liquid-Impinging Cooler (LIC) for Effectively Dissipating Heat from Thermoelectric (TE) Module

許冠淞(Kuan-Sung Hsu)

指導教授 ： 林柏廷

中原大學/工學院/機械工程研究所/碩士(2015年)

https://doi.org/10.6840/CYCU.2015.00248

摘要

電子元件發展尺寸縮小且元件密度提高，最困難的電子元件設計問題便是其高密度的熱產生量，單相液冷具有較高熱傳效率，為實用的散熱方式。本研究善用衝擊流具薄熱邊界層及高熱傳效率之優點，以解決電子散熱的問題。而在電子元件發展上，致冷晶片之應用日趨廣泛，其增加了熱分佈梯度與界面熱傳遞速度，可提供比環境更低之溫度，然而，低效率之散熱無法使致冷晶片發揮效能，本研究提出衝擊液冷散熱器，旨在吸收致冷晶片熱面端產生之焦耳熱，其利用等流道截面積理論設計，且經由數值模擬之分析驗證設計需求。近來許多研究者及設計者熱衷於塑料3D列印技術，但仍應用在產品開發階段，本研究將其技術與實際產品應用整合，透過數值模擬與實驗證實，開發者設計之流道能夠在生產後立即使用，並且塑膠流道具有與金屬流道相同之效能。而環保意識早已成為產品設計之要素，本研究整合散熱、穩健性與能耗為目標，透過直交表進行準確量測能耗功率之實驗設計，再以克利金法建立反應曲面，並且在多目標最佳化中考慮不同的能耗權重，得到在各種能耗指標下之最佳效能控制變量。

關鍵字

熱通量量測 ； 能耗指標 ； 衝擊流 ； 致冷晶片 ； 3D列印

並列摘要

Due to the increasing need for rapid heat dissipation from compact heat-generating components, single-phase liquid cooling has become a practical alternative for electronic components. Impinging jets has always been an attractive cooling technique due to its high heat dissipation and good thermal management. On the development of electronic components, the application of thermoelectric cooler (TEC) has become more diverse over the past decades. It can achieve lower temperatures, thus increasing thermal gradients as well as the heat transfer rates. However, low efficiency cooling systems cannot cope up with the heat generation of the TEC, thus highly reducing its efficiency. The proposed liquid impinging jet cooler (LIC) in this study is mainly used for cooling the hot side of TEC. The cooler is designed by the uniform-cross-section (UCS) theory, which is validated by the simulations and experiments conducted. Environmental awareness has been an important element of product design for a long time. Nowadays, researchers and designers have become highly interested in environmentally friendly, plastic 3D printing technology. However, it is mostly used only use on the stage of product development. In this research, the technology is combined with the realistic application of product. The numerical and experimental results show that the flow channel can be used after 3D printing immediately and it has the same performance with the metal flow channel. In this research, the objective includes cooling, robustness and power consumption. We used the measurement of energy efficiency to find the optimal control parameters under different power consumption preference.

並列關鍵字

heat flux measurement ； preference index ； impinging jet ； 3D printing ； thermoelectric cooler

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