核能制氢的效率分析

氢气的高效、清洁、大规模制备方法是发展氢能经济的基础,现有制氢技术难以满足这些需要。核能制氢作为一种有前景的大规模制氢方法,受到广泛研究。利用核能作为一次能源,对利用高温电解和碘硫循环两种工艺进行大规模制氢的热氢转换效率进行了估算及总结,并与目前工业应用的甲烷重整制氢与水电解制氢方法的效率进行了比较。研究结果表明,碘硫循环和高温电解的预期效率均可达到50%以上,显著高于从热到电再到氢的转换效率。

Efficiency Estimation of Nuclear Hydrogen Production

The production of hydrogen in a large scale with clean, CO2 free and efficient way is the fundamental of hydrogen economy. However, current hydrogen production methods can not meet these demands. As a promising massive way, nuclear hydrogen production is being extensively investigated across the world. The efficiencies of hydrogen production with nuclear energy as the primary energy supplier by various processes, including high temperature steam electrolysis(HTSE) and iodine sulfur(IS) thermochemical process, are estimated and compared with that of industrial methods, such as SMR and traditional electrolysis. Results show that the estimated hydrogen production efficiencies of IS cycle and HTST are both above 50%, which is remarkably higher than the overall conversion efficiency from heat to electricity and to hydrogen.