一种地下综合交通枢纽逐层日射得热负荷计算方法

Research on Solar Radiation Heat Load in Underground Comprehensive Transportation Hub Station

为解决地下综合交通枢纽类建筑层间通透所导致的各层太阳辐射得热负荷难以计算的问题,在工程常用的冷负荷系数法的基础上,提出利用太阳高度角、太阳方位角及楼层层高求解顶部天窗在各层的有效投影面积,进而对冷负荷系数法所求得的总负荷值逐层分项,计算得到各层日射得热负荷的方法。并引入室内蓄热平板模型法作为对比,结果表明两种方法计算得到的各层日射得热负荷相对误差均在10%左右,最大相对误差为13.54%,进一步验证了该方法的可行性,为实际工程中层间通透且具有大面积玻璃穹顶的地下综合交通枢纽类建筑各层日射得热负荷计算提供参考。

To solve the problem that the solar radiation heat load of each layer is difficult to calculate due to the interlayer permeability of underground comprehensive transportation hub buildings,this paper proposes to use the solar altitude angle,solar azimuth angle,and solar azimuth angle based on the commonly used cooling load coefficient method in engineering.The floor height is calculated to calculate the effective projected area of the top skylight on each floor.The total load value obtained by the cooling load coefficient method is divided layer by layer,and the process of calculating the solar heat load of each floor.The indoor heat storage flat-plate model method is introduced for comparison.The results show that the relative error of the solar radiation heat load of each layer calculated by the two methods is within 20%,which further verifies the technique's feasibility.It is transparent and transparent between the layers in the actual project.The solar heat load calculation on each floor of an underground comprehensive transportation hub building with a large-area glass dome provides a reference.