0 引言
1 实验设备
Fig. 1 Schematic diagram of PEM water electrolysis图1 PEM水电解制氢工艺流程 |
2 实验方法
2.1 PEM水电解制氢能耗测量
2.2 电流密度
2.3 运行温度
2.4 产氢速率的测定
2.5 制氢效率的测定
3 结果与讨论
3.1 电流密度对PEM水电解制氢系统能耗的影响
Fig. 2 Relationship between current density and hydrogen generation rate图2 电流密度与产氢速率的关系 |
Fig. 3 Relationship between current density and specific energy consumption图3 电流密度与单位能耗的关系 |
Fig. 4 Specific DC energy consumption and AC energy consumption图4 单位直流能耗和单位交流能耗 |
3.2 运行温度对PEM水电解制氢系统能耗的影响
Fig. 5 Influence of operating temperature on energy consumption with current density 1.0 A/cm2: (a) specific energy consumption; (b) specific DC energy consumption and specific AC energy consumption; (c) cell voltage and hydrogen production efficiency图5 电流密度1.0 A/cm2时,温度对能耗的影响:(a)系统单位能耗;(b)单位直流能耗和单位交流电耗;(c)电解电压及系统制氢效率 |
Fig. 6 Influence of operating temperature on energy consumption with current density 1.4 A/cm2: (a) specific energy consumption; (b) specific DC energy consumption and specific AC energy consumption; (c) cell voltage and hydrogen production efficiency图6 电流密度1.4 A/cm2时,温度对能耗的影响:(a)系统单位能耗;(b)单位直流能耗和单位交流电耗;(c)电解电压和系统制氢效率 |