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提出遮阳百叶散射-散射积分模型,通过积分求出百叶对天空散射、地面散射的综合透过率。结合射线追踪法,分别求得透过双层皮玻璃幕墙(DSF)系统的天空散射辐射和地面散射辐射。改变天气条件、百叶倾角等因素,对DSF系统的散射-散射辐射透过率进行模拟与实验对比,并求得室内散射-散射辐射得热量。结果表明:1)积分模型的散射-散射透过率逐时模拟结果与实验结果吻合较好,其准确性高于近似模型。2)散射-散射辐射得热量是室内太阳辐射总得热量的主要部分。百叶倾角分别为0°、30°、45°和60°时,积分模型计算室内散射-散射得热量与实验值之间的偏差均低于11%,而近似模型计算结果的偏差均约保持在30%。遮阳百叶散射-散射积分模型能准确模拟遮阳百叶的散射辐射。
The sun blinds scattering-scattering integral model is proposed, and the integral transmittance of the blinds to sky scattering and ground scattering is obtained through integration. Combined with ray tracing method, the sky scattered radiation and the ground scattered radiation passing through the double skin glass curtain wall (DSF) system are respectively obtained. Changing the weather conditions, louver angle and other factors, the DSF system of scattering - scattering radiation transmittance simulation and experimental comparison, and get the indoor scattering - scattered radiation heat. The results show that: 1) The scattering-scattering transmittance of the integral model coincides well with the experimental results, and its accuracy is higher than that of the approximate model. 2) Scattering - Scattering radiation The heat is the main part of the indoor total solar radiation heat. When the inclination angles of louvers are 0 °, 30 °, 45 ° and 60 ° respectively, the deviation between the calculated heat and experimental values of scattering and scattering in the integral model is less than 11%, while the deviation of the approximate model calculation results is maintained at about 30%. Sun blinds scattering - scattering integral model can accurately simulate the sun blinds scattering radiation.