摘要
热化学储能是实现太阳能光热发电长期稳定使用的有效方法,热化学储能反应器是实现热量存储和释放的核心装置。在热化学储能系统中,能够通过优化热化学储能反应器的结构提高其效率。因此,对储能反应器的性能、结构进行详细考察有助于反应器形式的改进和性能优化。采用COMSOL Multiphysics软件,模拟研究反应器内部载热流体通道内翅片排布对CaO/Ca(OH)_(2)体系储/放热过程的影响。其中,热载体流道侧的流道采用半圆柱型翅片,翅片采用并列与交错两种排布方式。模拟结果表明,在孔隙率为0.5的条件下,水解过程中,对称式翅片反应器与交错式翅片反应器的反应时间大幅减少,相较于板式反应器,减少了27%的反应时间。在水合过程中,交错式翅片反应器相比板式减少7%的反应时间。
Thermochemical energy storage is an effective method for achieving long-term stable use of solar thermal power generation,and the thermal chemical energy storage reactor is the core device for achieving heat storage and release.In thermochemical energy storage systems,the efficiency can be improved by optimizing the structure of the thermochemical energy storage reactor.Therefore,a detailed investigation of the performance and structure of energy storage reactors can help improve the reactor form and optimize its performance.Using numerical simulation methods to study the effect of fin arrangement in the heat carrying fluid channel inside the reactor on the heat storage/release process of CaO/Ca(OH)_(2)system.Among them,the flow channel on the heat carrier channel side adopts semi cylindrical fins,and the fins are arranged in two ways:parallel and staggered.The simulation results indicate that enhancing convective heat transfer capability has different effects in different reaction processes.During the hydrolysis process under the condition of 0.5 porosity,the reaction time of the symmetric and staggered fin reactors was significantly reduced,with a 27%reduction compared to the plate reactor.During the hydration process,the strengthening effect is not as significant as the hydration process,and the staggered fin reactor reduces the reaction time by 7%compared to the plate type.I hope that simulation research can provide guidance for the design and application of finned structure thermochemical energy storage reactors.
作者
马岩
梁四凯
梁凯皓
王志远
Yan Ma;Sikai Liang;Kaihao Liang;Zhiyuan Wang(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai;School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai)
出处
《建模与仿真》
2024年第3期2489-2507,共19页
Modeling and Simulation
