遮阳翻板辐射传输机理及辐射-对流换热动态特性研究

项目名称： 遮阳翻板辐射传输机理及辐射-对流换热动态特性研究

项目编号： No.51508225

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 建筑科学

项目作者： 陶求华

作者单位： 集美大学

项目金额： 21万元

中文摘要： 遮阳翻板能有效阻挡太阳辐射，被广泛应用于节能建筑以减小夏季太阳辐射得热，但是现有计算模型难以准确、客观地反映遮阳翻板与围护结构之间的辐射传输及换热机理。现有辐射传输模型对翻板做了太多的简化假设，无法用于有一定形状、厚度的翻板的辐射换热计算；辐射-对流换热计算没能考虑太阳辐射得热的影响。本课题将围绕翻板辐射传输及其与围护结构间换热的问题展开机理研究与实验研究，建立能够客观描述遮阳翻板与围护结构间辐射传输以及辐射-对流换热的机理模型，研究遮阳与建筑围护的动态换热规律。研究内容：1）研究翻板的太阳辐射传输机理，建立翻板太阳辐射传输的计算模型；2）搭建太阳辐射模拟测试平台，实验验证辐射传输模型；3）进行遮阳板与围护结构间辐射-对流换热的数值模拟和实验研究，并得到相应的换热计算经验关联式 4）研究不同边界条件下的遮阳翻板与围护结构之间辐射-对流换热规律，得到遮阳翻板全年运行特性，并通过实验验证。

中文关键词： 遮阳翻板；太阳辐射传输；辐射换热；对流换热；动态特性

英文摘要： Louver shades can effectively block the solar radiation, is widely used in energy saving buildings to minimize solar heat gain in summer, but the existing model could not accurately and objectively reflect solar radiation transfer and heat transfer mechanism between shades and building envelope . Existing solar radiation transfer model makes too many simplifying assumptions, and could not be used to calculate the radiation transfer of louvers with a certain shape and thickness; Boundary conditions of radiative-convective heat transfer failed to consider the.influence of solar radiation heat gain. The project will focus on radiation transfer mechanism and heat transfer mechanism between shades and building envelope through theoretical and experimental study, the objective mechanism model of radiation transfer and radiative-convective heat transfer between shades and building envelope will be established. Heat transfer law of microenvironment between shades and building envelope will be studied. The study contents include: 1) Study solar radiation transmission mechanism of louvers, and establish.calculating model of solar radiation transfer; 2) Verify solar radiation transfer model based on the experiment 3) Conduct the numerical simulation and experimental study on radiative-convective heat transfer between shades and building envelope to obtain empirical correlations of heat transfer 4) Based on models and empirical correlations above, study the radiative-convective heat transfer characteristics under different boundary conditions , to obtain the performance of louver shades in the whole year, and validate the results by field test.

英文关键词： Shading louvers;solar radiation transfer;radiative heat transfer;convective heat transfer;dynamic characteristics