近年來隨著環保意識抬頭以及原油價格的高漲，替代能源的發展變得刻不容緩。本研究以氫能的儲存做為研究主題，並擬藉由控制金屬粉末儲氫罐（LaNi5）的釋氫壓力，來操控供氫時的相關性能。具體而言，在本研究中我們參考前人研究結果，結合流體力學、熱質傳學以及釋氫反應動力學等理論，建立一套儲氫罐供氫性能的計算理論模型。利用該理論模型，我們討論在四種不同的降壓曲線設定（一階、二階、三階與指數函數）下，金屬儲氫罐供氫時的釋氫速率以及流率穩定性差異。研究結果分為兩大方向：一是若要得到最快的釋氫速率時，我們應盡其所能讓出口壓力快速的降到最低；但若我們希望給予一穩定的供氫流量，則應該使得降壓曲線平緩。在兩者無法兼得的狀況下，我們會建議儲氫罐設計者宜先確認其被供氫端所需之氫流量與流速需求，再利用本研究所建構之理論模型輔助決定其邊界壓力該如何控制。

Because of increased environmental consciousness and crude oil price, it has become extremely urgent to exploit alternative energy sources. This research therefore is devoted to the development of an efficient simulation tool for hydrogen storage technology, and the purpose is to analyze the effects of release-pressure control on the hydrogen supply characteristics of metal hydride (LaNi5) reactors. Specifically, based upon previous studies, here we integrate theories of fluid dynamics, heat and mass transfer, and hydrogen absorption/release reaction kinetics to develop a theoretical model for calculating the hydrogen supply characteristics of metal hydride reactors. In particular, four different temporal variations of the hydrogen release pressure (namely first-order, second-order, third-order, and exponential functions) are studied. It is found that, generally speaking, to release the hydrogen contained in the reactors rapidly one has to lower the release pressure as fast as possible. On the other hand, lowering the release pressure slowly would produce a more steady hydrogen flowrate. There therefore is a trade-off between the mean value and steadiness of the hydrogen flowrate. Also, the theoretical framework and simulation tool developed in this thesis would be helpful for system designers to choose an optimized temporal variation for the hydrogen release pressure.

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