摘要
电解水与高效清洁一次能源耦合制氢,是理想的大规模制氢技术。该文建立了电解水制氢系统效率评估模型,并通过该模型对碱性、固体聚合物电解池(SPE)及固体氧化物电解池(SOEC)制氢系统总制氢效率进行了计算与分析。碱性制氢系统电解效率与总制氢效率均较低,分别为56%和25%;SPE制氢系统电解效率虽有提高约76%,但其总制氢效率仍较低约35%;而SOEC制氢系统电解效率可达90%以上,总制氢效率高达55%,分别是SPE与碱性制氢系统的1.5和2倍。高温气冷堆耦合的SOEC电解制氢系统是目前已知总制氢效率最高的大规模制氢系统。
Water electrolysis coupled with an efficient and clean primary energy source is an ideal large-scale hydrogen production technology. A model was developed to predict the efficiency of a water electrolysis system for hydrogen production based on the overall efficiency of an alkaline electrolysis system, a solid polymer electrolyte (SPE) system, and a solid oxide electrolysis cell (SOEC) system. The results show that both the electrolysis efficiency, 56%, and the overall efficiency, 25%, are very low. The electrolysis efficiency, 76%, of the SPE system is improved, the overall efficiency, 35%, is still low. However, the electrolysis efficiency of the SOEC is more than 90% and the overall efficiency is over 55%, both are much higher than the other systems. The overall efficiency of a high-temperature gas-cooled reactor coupled with an SOEC system is the highest among all existing water electrolysis systems.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2009年第6期868-871,共4页
Journal of Tsinghua University(Science and Technology)
基金
教育部博士点专项新教师基金项目(No.20070003033)
关键词
氢能
电解水制氢
效率分析
碱性电解池
固体聚合物电解池
固体氧化物电解池
hydrogen energy
water electrolysis
efficiency analysis
alkaline electrolysis cell
solid polymer electrolyte electrolysis cell
solid oxide electrolysis cell