CH_4-ZnO太阳能热化学制氢过程的数值分析  

THE NUMERICAL ANALYSIS OF SOLAR THERMOCHEMICAL HYDROGENPRODUCTION BASED ON CH_4-ZnO REACTION

作　　者：吴玺[1] 叶宏[1] 葛新石[1] 

机构地区：[1]中国科学技术大学热科学与能源工程系,合肥230027

出　　处：《太阳能学报》2008年第1期55-60,共6页Acta Energiae Solaris Sinica

摘　　要：以文献中提出的SynMet太阳能反应器为基础.利用数值软件计算并分析了腔体温度、反应物进口速度和CH_4-Ar体积比对反应效率的影响。结果表明:当腔体温度在1450K以上,反应物进口速度低于1m·s^(-1)时,反应效率可达到90%以上;相对于腔体温度和反应物进口速度,CH_4-Ar体积比对反应效率的影响较小,基于经济及安全方面的考虑不应超过1:1。Solar thermochemical hydrogen production based on CHa-ZnO reaction is a way of driving the CH4-ZnO reaction to produce H2 utilizing the high temperature generated by solar concentrating system. Based on the solar reactor ＂SynMet＂ introduced in the literature, the influences of the cavity temperature, the inlet velocity of the reactants and the volume ratio of CH4 to Ar on the reaction efficiency were calculated by numerically software and analyzed. It is found that the reaction efficiency can reach more than 90% if the cavity temperature is higher than 1450K and the inlet velocity of the reactants is less than 1m.s^-1. Relative to the reaction temperature and the inlet velocity, the influence of the volume ratio of CH4 to Ar is some what weaker and should be less than 1 ： 1 considering economy and security factors.

关 键 词：太阳能热化学制氢 太阳能反应器 总热损系数 反应效率 

分 类 号：TK519[动力工程及工程热物理—热能工程]