Exploring a novel tubular-type modular reactor for solar-driven thermochemical energy storage
Exploring a novel tubular-type modular reactor for solar-driven thermochemical energy storage
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DOI：
10.1016/j.renene.2023.119767
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发表时间：
2023-12
期刊：
影响因子：
8.7
通讯作者：
Yong Zhang;Mingke Hu;Ziwei Chen;Yuehong Su;S. Riffat
中科院分区：
文献类型：
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作者：
Yong Zhang;Mingke Hu;Ziwei Chen;Yuehong Su;S. Riffat
热化学储能（TCES）作为解决太阳能生产和需求之间不匹配的潜在解决方案已受到广泛关注。在这项研究中，一种新型的管式模块TCES反应器。COMSOL建模的系统开发和实验验证使用实验室规模的TCES系统。两种类型的反应器显示出相似的温度升高，随着入口相对湿度的增加而加剧。它们的最高温度在90%RH时超过26 °C。与板结构相比，管状设计提供了更好的轴向弯曲强度和TCES复合材料的分散性。管状结构的这一特性有利于减小床层厚度和压降，提高等效热效率。模拟结果表明，与板式模块反应器相比，管式模块反应器的压降降低了4-5倍，等效热效率提高了近7%。增加反应器床的数量和内管半径由于减小的床厚度和压降而提高等效热效率。随着反应器床层中矩阵行和列的数量从2增加到10，床层厚度从0.058 m减小到0.012 m，压降从845.53 Pa减小到38 Pa，等效热效率从78.82%增加到96.61%。
Thermochemical energy storage (TCES) has gained extensive attention as a potential solution to address the mismatch between solar thermal energy production and demand. In this study, a novel tubular-type modular TCES reactor is introduced. COMSOL modelling of the system is developed and experimentally validated using a laboratory-scale TCES system. Both types of reactors show similar temperature increases, intensifying with higher inlet relative humidity. Their maximum temperature lifts exceeding 26 °C at 90 % RH. Tubular designs offer better axial flexural strength and dispersion of TCES composite materials compared to plate structures. This property of tubular structures beneficial reducing bed thickness and pressure drop and enhancing equivalent thermal efficiency. Simulations show tubular-type modular reactors reduce pressure drop by 4–5 times compared to plate-type modular reactors, increasing equivalent thermal efficiency by nearly 7% points. Increasing the number of reactor beds and inner tube radius improves equivalent thermal efficiency due to reduced bed thickness and pressure drop. As the number of matrix rows and columns in the reactor bed increases from 2 to 10, bed thickness decreases from 0.058 m to 0.012 m, reducing pressure drop from 845.53 Pa to 38 Pa and increasing equivalent thermal efficiency from 78.82 % to 96.61 %.