项目名称: 直接式高温太阳能化学反应器内参与性介质辐射与气固反应流的耦合机理研究
项目编号: No.51476163
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 能源与动力工程
项目作者: 李鑫
作者单位: 中国科学院电工研究所
项目金额: 80万元
中文摘要: 直接式高温太阳能热化学反应器是高温太阳能热化学应用的核心部件,其中反应物作为参与性介质直接吸收太阳辐射,同时涉及到复杂的传热、传质、多尺度气固两相流及其与化学反应动力学的耦合过程。本课题以直接式太阳能热化学反应器为研究对象,开展瞬变、高焦比(10000kW/m2)太阳辐射条件下,复杂组分参与性介质强烈的光谱性和容积性对于高温辐射传递特性的影响、多尺度(10nm~5mm)气固两相流、化学动力学及其相互耦合作用的机理研究。在此基础上建立反应器内介质转换过程的完整数学物理模型,揭示参与性介质辐射与多尺度气固反应流的耦合作用机制,得出反应条件对于热化学反应器转化率和热效率的影响规律,为直接式太阳能热化学反应器的设计开发奠定理论基础。
中文关键词: 直接式太阳能化学反应器;参与性介质辐射;气固两相流;多尺度;耦合
英文摘要: Directly irradiated solar chemical reactor is the key compont for high temperaure solar thermchemical deposition.The reactive gas-particles are radiative participating mediums directly abosorb the solar radiation and complex heat and mass transfer, multiscale gas-solid two phase flow, chemical kinetics and coupling effects within them in the reactor.This project aims to research the directly irradiated solar chemical reactor.Under unsteady and high incident solar radiation(10000kW/m2) conditons,the radiavite heat transfer of participating mediums with complex compounds which intensively depend on their wavelength distribution and penetrating depth, multiscale gas-solid flow,chemical kinetics and their mutual coupling mechanism will be investigated. Then the model of the whole conversion process in the reactor will be established to reveal the mechanism of radiative heat transfer of participanting mediums and coupling effect with multi-scale two phase reaction flow. And the influence of reaction conditions on the reaction materials conversion efficiency and thermal performance will be got. and chemical kinetics and to get influence of temperature field, flow field, gas The outputs of the project will provide the theoreactical basis for of reactor.
英文关键词: directly irradiated solar chemical reactor;participating mediums radiative heat transfer;gas-solid flow;multiscale;coupling effect