隨著全球煤炭、石油與天然氣市場萎縮，與溫室效應影響，清潔能源與能源的效率備受重視，低溫廢熱發電機可高效率的 降 低溫熱能轉換為電力外，更兼具環保。發電系統中重要組件為渦輪機，使用動壓箔片軸承可讓渦輪系統以更高轉速、低維護及耐高溫之無油環境下操作，更 能達到無機械摩擦之高效率運轉，符合目前全球能源發展之重要趨勢。
本論文從原理設計及實務製作逆向工程動壓箔片軸承開始，由空氣動力學之氣薄膜懸浮理論切入，推導二維旋轉流場之潤滑流體力學公式，撰寫基於二維有限差分法之數值模擬程式，用以協助動壓箔片之設計參數選擇，在考慮耐磨性及使用環時，以超合金製作上撐箔片及擋箔片，進而規劃設計量測軸承動態性能之實驗平台，將軸承轉速、溫度、扭矩、振動及加速度等物理數據，以個人電腦暨數據蒐集系統取樣紀錄，根據啟動、懸浮、無載及加載運轉模式，進行記錄動壓箔片軸承之各項動態數據，分析摩擦轉矩及轉速配合加速度振動參數，最終彙整動壓箔片軸承運轉時之物理現象與流體力學之關係，供未來學界或業界進行深入研究之參考。

Due to the shortage in hydro-carbon resources and severe global warming effects, clean energy and energy efficient have gained more attention in recently. The uses of waste-heat thermoelectric generator can dramatically increase energy efficiency and eco-friendly affability. Furthermore, turbine generator in power generation systems is a key component of the relevant equipment. Air foil bearings can enhance turbine generator system to run at higher speed and operating temperature with low maintenance efforts with oil-free conditions.
The objective of the thesis is to employ Finite Difference Method for simulation of the airfilm thickness and pressure profile serving the key design parameters in the bearing design. Next, the manufacture methods of bump foil, top foil and bearing housing are carefully evaluated for measurements of the bearing characteristics. With consideration in wear resistance and severe operational environment, superalloy metal foils are superior candidates for the foil materials. Finally, a test stand is built in-house to measure the speed, temperature, torque, and vibrational acceleration data. According to the data analysis, the dynamic characteristics of the air foil bearing are determined for correlating the physical phenomena with lubrication theory in fluid mechanics with the help of experimental observations and
operational data plots.

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