A Study on Preparation and Testing of Hydrogen-Storage Properties of Metal Hydrides

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基本資料

Project title

Translated Name/計畫中文名

貯氫合金製備與性質測試研究

Project Coordinator/計畫主持人

Hwa-Chong Tien

Funding Organization/主管機關

State-owned Enterprise Commission ,SEC

Co-Investigator(s)/共同執行人

黃男農
王星豪

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=1050101

Year

2004

Start date/計畫起

01-07-2004

Expected Completion/計畫迄

01-12-2005

Co-Investigator(s)

Nan-Nong Huang
Shing-Hoa Wang

Bugetid/研究經費

2000千元

ResearchField/研究領域

機械工程
能源工程

"本研究計畫的主要目的在：(1)製備新型奈米級鈉鋁與鎂基貯氫合金，並試驗其儲氫性質，(2)利用新型貯氫合金設計並研製一先導型貯氫反應容器，(3)就反應器熱流與氣流對吸放氫反應速率的影響作模擬，試驗及比較，(4)依研究成果提出實用型貯氫反應容器設計方案。在製備新型貯氫合金方面，為發展有效的貯氫能力及便利的吸氫/放氫操作環境需求，本項研究目的為：(1)提升儲氫容量達4 %wt~8 %wt，(2)降低吸氫/放氫操作壓力或/和溫度。將以機械合金法開發下列三種奈米合金(a)Mg-Ni系合金粉添加Nb等元素形成奈米鎂基貯氫合金(b)鎂粉＋0 %wt~10 %wt奈米碳管之奈米鎂基貯氫合金(c) NaAlH4粉＋0 %wt~10 %wt奈米碳管＋2 mol﹪b-TiCl3奈米鈉鋁基貯氫合金。至於貯氫反應容器之設計，由於擬採用的新型貯氫材料的工作溫度及壓力均較一般貯氫合金為高，吾人設計時必須審慎考慮此因素。容器擬設計為圓筒型，外長及外直徑分別約為40㎝及15㎝，預期在5~10小時之內，實際儲氫量可達有效儲氫量之8成。本計畫也擬對反應器熱流對吸放氫速率的影響作模擬及測試，以了解主要控制變因並加快反應速率。最後本計畫將根據以上所得研究成果提出實用型貯氫容器設計方案，供台電儲氫應用之規劃參考。" "This project intends to conduct research in four categories:(a) preparation of nano NaAl and Mg-based alloys and testing on properties for hydrogen storage, (b) design and fabrication of a tentative (small-size) metal hydride (MH) tank by utilizing these hydrogen storage materials, (c)simulation, test and comparison to be made to study the effects of heat and fluid flow on hydrogen absorption/desorption rates, and (d) a large-size metal hydride tank to be proposed based on the performance of the tentative tank. On the preparation of the novel nano Mg-based and nano NaAl-based hydrogen storage materials for the demand of developing an effective hydrogen storage capacity and a convenient absorbed and desorbed hydrogen environment, the purposes of this study are (1)raising the hydrogen storage capacity from 4 %wt to 8 %wt, (2)reducing the operating pressure or/and temperature in hydrogen absorption/desorption. The development of 3 kinds of nano hydrogen storage alloys by means of mechanical alloying is as follows:(a) Mg-Ni powder with Nb and/or other elements (b) Mg powder plus 0 % wt~10 % wt nano-carbon tube (c)NaAlH4 powder plus 0% wt~10 % nano-carbon tube plus 2 mol% bata- TiCl3. As for the design of the small-size metal hydride tank, since the NaAl and Mg-based MH are expected to have higher operating temperature and pressure than common MH, these factors should be taken into account seriously. The shape of the MH tank will be designed as a circular tube. The outer diameter and length will be around 15 cm and 40 cm. It is expected that within 5~10 hours the actual storage of hydrogen can achieve 80% of the effective storage capacity of the tank. This project also intends to study the effects of heat transfer and fluid flow on the charge/discharge rates of hydrogen by conducting numerical simulation and charge/discharge tests. The controlling parameters will be identified and the charge/discharge process will be optimized. Finally, a practical (large-size) metal hydride tank will be proposed based on the results for the small-size tank."

Keyword(s)

貯氫容器
熱傳
貯氫材料
hydrogen storage tank
heat transfer
hydrogen storage materials

DSpace CRIS

A Study on Preparation and Testing of Hydrogen-Storage Properties of Metal Hydrides

基本資料

Description