Effects of structural parameters on the performance of a micro-reactor with micro-pin-fin arrays (MPFAR) for hydrogen production
Effects of structural parameters on the performance of a micro-reactor with micro-pin-fin arrays (MPFAR) for hydrogen production
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结构参数对微针翅阵列微反应器（MPFAR）制氢性能的影响
DOI：
10.1016/j.ijhydene.2012.09.011
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发表时间：
2012-12
影响因子：
7.2
通讯作者：
Binghong Liu
中科院分区：
文献类型：
--
作者：
Deqing Mei;Miao Qian;Zhehe Yao;Binghong Liu
为提高微针翅阵列制氢微反应器的能量转换效率，研究了针翅阵列结构参数（针翅高度、针翅横向中心距和针翅纵向中心距）对微针翅阵列制氢性能的影响.基于几何参数，建立了MPFAR制氢的物料平衡理论模型。计算结果表明，随着微针翅高度的增加或相邻微针翅间距的减小，甲醇转化率和CO摩尔分数均增大。当微针翅高度从0.2 mm增加到1 mm或相邻两微针翅中心距从1.2 mm增加到2.6 mm时，甲醇转化率提高约10%。实验结果与计算结果的对比验证了本研究所采用的物料平衡理论模型。最后得到了一种较好的微针翅阵列几何结构，即微针翅高度为1.0mm，两相邻微针翅横向中心距为1.2mm，纵向中心距为1.2mm。在甲醇转化率大于90%的条件下，MPFAR的氢气产率可达8.3ml/min左右。
To enhance the energy conversion efficiency of the micro-reactor with micro-pin-fin arrays (MPFAR) for hydrogen production, the effect of structural parameters (the height of the micro-pin-fin, the transverse and longitudinal center distance between two adjacent micro-pin-fins) on the performance of the MPFAR for hydrogen production is investigated. Based on the geometrical parameters, a theoretical model of material balance for hydrogen production in the MPFAR is established. The calculated results show that with the increase of the micro-pin-fin height or the decrease of the distance between two adjacent micro-pin-fins, the methanol conversion rate and the CO molar fraction increase. The methanol conversion rate increases by about 10% when the height of micro-pin-fin increases from 0.2 to 1mm or the center distance between the two adjacent micro-pin-fins increases from 1.2 to 2.6mm. The comparisons between the experimental and calculated results validate the theoretical model of material balance utilized in this study. Finally, a better geometrical structure of micro-pin-fin arrays is obtained, in which the height of the micro-pin-fin, the transverse and longitudinal center distances between two adjacent micro-pin-fins are 1.0mm, 1.2mm and 1.2mm, respectively. The hydrogen yield in the MPFAR can reach about 8.3ml/min under the condition that the methanol conversion rate is above 90%.
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