摘要
指出现有太阳高度角和方位角计算公式的使用在建筑物日照分析中存在的不便与不足。构建辐射历计时系统,并重新定义太阳高度角和方位角的取值范围,使其随时角的日变化和年变化具备单值性从而改进了现有计算公式。根据改进后的计算公式绘制不同纬度处太阳高度角和方位角随时角的变化曲线,讨论了这些曲线的数学特征所描述的天文学和地理学现象,验证了改进后公式的正确性和通用性,对建筑、空调、结构设计人员进行建筑日照分析都具有一定的参考价值。
The application of existing formulas to determine solar altitude and azimuth angles is inconvenient and inadequate. To improve the existing formulas, a new timing system named the Radiation Calendar was established. In this system the angles ranges were redefined, making the angles calculated from the improved formulas single-valued and varying with hour angle. Representative curves of solar altitude and azimuth angles varying with hour angle were plotted. The mathematical distinctions of these curves astronomically and geographically describe some rules of solar position varying with time, which proves the validity and generality of the improved formulas. The results calculated using the improved formulas show simply and clearly the daily and annual variation of solar altitude and azimuth angles, which are valuable in the work of sunlight distribution analysis related to the design of buildings, air-conditioning systems and structures.
出处
《重庆建筑大学学报》
EI
CSCD
北大核心
2008年第5期130-134,共5页
Journal of Chongqing Jianzhu University
基金
建设部研究开发项目(06-K3-14)
关键词
太阳高度角
太阳方位角
建筑日照分析
solar altitude angle
solar azimuth angle
building sunlight distribution analysis
