摘要
为了确定在能量转换上有价值的光催化分解水制氢过程,提出了临界光能转换效率的概念。临界光能转换效率就是系统产出的氢能与外界输入系统的能量相等时的光能转换效率。只有当光能转换效率超过其临界光能转换效率的时候才有可能实现系统的能量收益。对使用Na2S/Na2SO3作为牺牲剂的体系进行了分析计算,结果显示在年产2万t氢气规模下,该系统的临界光能转换效率为13%。
The idea of the critical conversion efficiency is suggested to improve the conversion efficiency of light energy. The critical conversion efficiency is defined as the conversion efficiency of light energy when the hydrogen energy output is equal to the energy input from the outside system. The energy profit cannot be achieved until the conversion efficiency of light energy is greater than the critical value. A system with Na2S/Na2SO3 as sacrificial reagent is analyzed and calculated. The results show that the critical conversion efficiency of light energy reaches 13 % when the annual hydrogen production is 20, 000 tons.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2007年第2期45-47,共3页
Journal of North China Electric Power University：Natural Science Edition
基金
国家重点基础研究发展规划资助项目(2003CB214500)
关键词
光催化
分解水
制氢
临界光能转换效率
photocatalytic
water decomposition
hydrogen production
critical conversion efficiency of light energy
