【摘要】 氨基热化学储能方法为纯太阳能热发电的稳定性和不间断性提供了一条有效途径。介绍了氨基热化学储能的基本原理,在此基础上建立了放热反应器(氨合成反应器)的数学模型,定量分析和讨论了在一定设计压力和氢氮比条件下,进气温度和进气流率对反应的影响,给出了实现火用最优化和热能最大化的操作参数,并比较了最优火用和最大热能的关系。模拟结果表明,反应器内催化床层的平均温度是实现火用和能量最大化的最重要调节参数,反应温度为850℃时输出最大火用,反应温度为650℃时输出最大热能。更多还原

【Abstract】 The ammonia-based thermochemical energy-storing method is an effective way for stable and continuous thermal power generation by using solar energy.The basic principle of ammonia-based thermochemical energy-storing reactor has been presented.Based on the said principle,a mathematical model of an exothermic reactor(ammonia sythesis reactor)has been established,the influence of reactor’s inlet gas temperature and reactant’s flow rate upon the ammonia synthesis reaction under condition of definite designed pressure and hydrogen nitrogen ratio being quantitatively analysed and discussed,giving out operating parameters for realizing exergy optimization and thermal energy maximization.The relationship between optimal exergy and maxinum thermal energy has been also compared.Result of simulation shows that the average temperature of catalytic bed layer in the reactor is an most important control parameter to realize optimal oxergy and maximum thermal energy,the maximum exergy output and maximum thermal energy output can be obtained under reaction temperature of 850 ℃ and 650 ℃ respectively.更多还原