0 引言
1 实验设计
Fig. 1 Hydrogen absorption/desorption performance testbed of solid metal hydrogen storage system图1 固态金属储氢系统吸/放氢性能测试平台 |
Table 1 Main parameters of solid metal hydrogen storage tanks表1 固态金属储氢罐主要参数 |
项目 | 参数 |
---|---|
罐体材料 | 不锈钢 |
罐体尺寸 | φ 56 mm × L 380 mm |
罐体壁厚 | 3 mm |
导热系数 | 14.6 W/(m∙K) |
热通量 | 1 671.02 W/m2 |
储氢材料 | LaNi5 |
储氢材料含量 | 5 kg |
额定储氢量 | 560 L |
接口尺寸 | 6 mm |
充氢压力 | 1.5 ~ 2.5 MPa |
放氢压力 | 0.2 ~ 1 MPa |
Fig. 3 Schematic structure of AB5 solid metal hydrogen storage system图3 AB5型固态金属储氢系统结构示意图 |
1.1 吸氢实验设计
Table 2 Combination of hydrogen absorption/desorption experiments at different pressures and temperatures表2 不同压力和温度下的吸/放氢实验组合 |
工况 | 压力/MPa | 温度/℃ |
---|---|---|
吸氢 | 1.5 | 5 |
10 | ||
2.5 | 5 | |
10 | ||
放氢 | 0.2 | 30 |
35 | ||
40 | ||
0.3 | 30 | |
35 | ||
40 | ||
0.4 | 35 | |
40 | ||
45 |
1.2 放氢实验设计
Table 3 Hydrogen volume ideal expansion multiplier table表3 氢气体积理想膨胀倍数表 |
T/℃ | 体积膨胀倍数 |
---|---|
20 | 1.000 |
30 | 1.034 |
35 | 1.051 |
40 | 1.068 |
45 | 1.085 |
2 实验结果分析
2.1 吸氢实验结果讨论
Fig. 4 Wall surface and water temperature change of solid metal hydrogen storage tank under different hydrogen absorption pressure and temperature: (a) 1.5 MPa, 5β℃; (b) 1.5 MPa, 10β℃; (c) 2.5 MPa, 5β℃; (d) 2.5 MPa, 10β℃图4 不同吸氢压力和温度下固态金属储氢罐壁面及水温变化:(a)1.5 MPa,5β℃;(b)1.5 MPa,10β℃;(c)2.5 MPa,5β℃;(d)2.5 MPa,10β℃ |
Fig. 5 Total hydrogen absorption of solid metal hydrogen storage tank under different hydrogen absorption conditions图5 各吸氢条件下固态金属储氢罐的吸氢总量 |
Fig. 6 Wall temperature change of hydrogen storage tank under the same hydrogen absorption temperature and different hydrogen absorption pressure: (a) 5β℃; (b) 10β℃图6 相同吸氢温度、不同吸氢压力条件下储氢罐壁面温度变化:(a)5β℃;(b)10β℃ |
Fig. 7 Wall temperature change of hydrogen storage tank under the same hydrogen absorption pressure and different hydrogen absorption temperatures: (a) 1.5 MPa; (b) 2.5 MPa图7 相同吸氢压力、不同吸氢温度条件下储氢罐壁面温度变化:(a) 1.5 MPa;(b) 2.5 MPa |
2.2 放氢实验结果讨论
Fig. 8 Wall surface and water temperature change of solid metal hydrogen storage tank under different hydrogen release pressure and temperature: (a-c) hydrogen release pressure 0.2 MPa; (d-f) hydrogen release pressure 0.3 MPa; (g-i) hydrogen release pressure 0.4 MPa图8 不同放氢压力和温度下固态金属储氢罐壁面及水温温度变化:(a ~ c)放氢压力0.2 MPa;(d ~ f)放氢压力0.3 MPa;(g ~ i)放氢压力0.4 MPa |
Fig. 9 Total hydrogen released from solid metal hydrogen storage tank under different hydrogen releasing conditions图9 各放氢条件下固态金属储氢罐的放氢总量 |
Fig. 10 Hydrogen instantaneous change of solid metal hydrogen storage tank under different dehydrogenation pressure and temperature: (a) hydrogen release pressure 0.2 MPa; (b) hydrogen release pressure 0.3 MPa; (c) hydrogen release pressure 0.4 MPa图10 不同放氢压力和温度下固态金属储氢罐放氢瞬量变化:(a)放氢压力0.2 MPa;(b)放氢压力0.3 MPa;(c)放氢压力0.4 MPa |