A three-dimensional simulation of a mid-and-low temperature solar receiver/reactor for hydrogen production
A three-dimensional simulation of a mid-and-low temperature solar receiver/reactor for hydrogen production
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中低温太阳能接收器/制氢反应器的三维模拟
DOI：
10.1016/j.solener.2016.05.003
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发表时间：
2016-09
期刊：
影响因子：
6.7
通讯作者：
Jin Hongguang
中科院分区：
文献类型：
--
作者：
Wang Yanjuan;Liu Qibin;Lei Jing;Jin Hongguang
太阳能接收器/反应器是影响太阳能热化学过程转换效率的关键部件。本文研究了一种由多孔 Cu/ZnO/Al2O3 催化剂床组成的热化学太阳能反应器/接收器。提出了一种三维热化学耦合模型，该模型结合了流经多孔催化剂床的流体和将辐射/对流/传导传热与反应动力学耦合的能量守恒方程，以研究接收器/反应器的性能。对水/甲醇摩尔比、太阳辐射和入口温度等影响氢气产量和温度分布的因素进行了数值研究。数值模拟结果表明，催化剂失活可能出现在接收器/反应器管壁附近。甲醇转化率随着甲醇进料量的增加而降低，为了保护催化剂床层，应避免入口甲醇进料量过低。提出了一种新的太阳能接收器/反应器，通过改变沿流动方向的孔径宽度，使集中的太阳能水平与化学反应相匹配。与传统太阳能接收器/反应器相比，热化学效率可提高3个百分点。研究成果将为中低温太阳能接收器/反应器的未来发展铺平道路。
The solar receiver/reactor is a key component that influences the conversion efficiency in the solar thermochemical process. A thermochemical solar reactor/receiver consisting of a porous Cu/ZnO/Al2O3catalyst bed is studied in this paper. A three-dimensional thermochemical coupling model that incorporates the fluid flowing through the porous catalyst bed and energy conservation equations coupling the radiation/convection/conduction heat transfer with the reaction kinetics is proposed to investigate the performances of the receiver/reactor. The factors of influencing the hydrogen production and the temperature distribution, including the mole ratio of water/methanol, the solar radiation and the inlet temperature, are numerically investigated. Numerical simulation results indicate that the deactivation of the catalyst may appear near the receiver/reactor tube wall. The methanol conversion decreases with the increase of the methanol feeding rate, and the low inlet methanol feeding rate should be avoided for the protection of the catalyst bed. A new solar receiver/reactor is proposed by changing the aperture width along the flow direction to make the concentrated solar energy level match the chemical reaction. Compared with traditional solar receivers/reactors, the thermochemical efficiency can be increased by 3% points. The research findings will pave the way for the future development of the mid-and-low temperature solar receiver/reactor.
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影响因子：
7.2
作者：
D. Hirsch;A. Steinfeld
通讯作者：
D. Hirsch;A. Steinfeld
DOI：
10.1115/1.4030851
发表时间：
2015-10
影响因子：
2.3
作者：
Ben Xu;Peiwen Li;C. L. Chan
通讯作者：
Ben Xu;Peiwen Li;C. L. Chan
影响因子：
6.7
作者：
H. Hong;Hongguang Jin;J. Ji;Zhifeng Wang;R. Cai
通讯作者：
H. Hong;Hongguang Jin;J. Ji;Zhifeng Wang;R. Cai
影响因子：
6.7
作者：
M. Lanchi;F. Varsano;B. Brunetti;M. A. Murmura;M. Annesini;L. Turchetti;Roberto Grena
通讯作者：
M. Lanchi;F. Varsano;B. Brunetti;M. A. Murmura;M. Annesini;L. Turchetti;Roberto Grena
影响因子：
3.3
作者：
Krishna, R;van Baten, JM
通讯作者：
van Baten, JM