Analysis of hydrogen absorption/desorption behavior of carbon fiber composites vessel for solid state hydrogen storage

• Main Authors: Chu-Chun Chuang, 莊筑鈞
• Other Authors: Chang-mou Wu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/39229429478178699881

碩士 === 逢甲大學 === 綠色能源科技碩士學位學程 === 100 === Commercially used hydrogen storage cylinders are metal containers combined with the external thermostat element. However, using the metal container in the process of the solid state hydrogen storage/release reaction may lose the heat to environment. Moreover, the record and theory revealed that the design of inner thermostat is better than external thermostat in the hydrogen storage/release effect. So this work aim at using CFRP in solid state hydrogen storage technique to perform the hydrogen storage/release in the hydrogen storage cylinder and built an inner thermostat cylinder inside the cylinder. Through the possession of the parameter of hydrogen storage alloy could depict various physical phenomena more realistically. After proving the experimental data is identical to simulation data, we could make sure that the simulation in this work could truly present the process of hydrogen storage/release reaction. After changing the hydrogen storage / release operating conditions、the proportion of hydrogen storage alloy and the addition of the property of low heat conductivity provided by CFRP, then we could analyze the hydrogen storage/release effect. The results showed that increase the proportion of hydrogen storage alloy extending the time to storage/release hydrogen, but increasing the work pressure and temperature of the thermostat fluid could shorten the time to storage/release, and this phenomenon was obviously showed in the case of higher proportion of hydrogen storage alloy. However, the low heat conductivity of the CFRP storage cylinders needed more to storage hydrogen.