【作者】 郑青榕； 顾安忠； 蔡振雄； 廖海峰； 郑超瑜；

【Author】 ZHENG Qing-rong, GU An-zhong, CAI Zhen-xiong, LIAO Hai-feng, ZHENG Chao-yu (Institute of Marine Engineering, Jimei University, Xiamen 361021 ,China;Insitute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200030, China)

【机构】 集美大学轮机工程学院； 上海交通大学制冷与低温工程研究所；

【摘要】 为研究充放气压力、充放气方式对活性炭储氢罐工作特性的影响,首先根据容积法的原理,在测定的氢在YK-1活性炭上吸附等温线的基础上,由等量吸附线标绘确定氢在该吸附剂上的平均等量吸附热为4．5 kJ／mol。其次,在室温、10．5 MPa和5．2 MPa压力下,对储罐进行快速充／放气和慢速充／放气试验。结果表明,在常温、 10．5 MPa下快速充气时,在开始100 s左右,储罐吸附床中心的温升可达42 K;在放气试验中,吸附床中心温度在 10．5 MPa下快速放气时在600 s内可从常温降至268 K。比较试验结果时发现,采用慢速充放气或在较低的压力下快速充放气可减缓吸附床的温度变化,从而提高有效吸脱附量和吸脱附流速。更多还原

【Abstract】 Comparative experiments were carried out to study the effect of the adsorption heat on the charge and discharge performances of a hydrogen storage system. The mean isosteric heat 4.5 kJ/mol of hydrogen adsorption on the activated carbon YK-1 was determined by adsorption isosteres on measured isotherms. Temperature profiles of the adsorption bed were recorded by nine thermocouples for analyzing the charge and discharge processes of a storage vessel under pressures 10.5 MPa and 5.2 MPa. Results show that the quick charge at ambient temperature from 0.1 to 10.5 MPa resulted in a maximum temperature rise of 42 K, and the process of the quick discharge under the pressure 10.5 MPa brought about a maximum temperature drop of 27 K and the release of 90 % of the adsorbed gas. Conclusions were drawn that measures can be taken to weaken the effect of the adsorption heat on the performances of the storage system.更多还原