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Derivation of the solar geometric relationships using vector analysis

机译:使用矢量分析推导太阳几何关系

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The standard mathematical approach used in deriving equations to describe the apparent motion and position of the Sun is spherical trigonometry. Additionally, the derivation of the equations for the intensity of the direct beam radiation, incident on the surface of a solar collector or architectural surface, also generally relies on the same approach. An alternative approach utilizing vector analysis is used to derive all of these equations. The technique greatly simplifies the derivation of equations for quantities such as the declination, altitude and azimuth of the Sun, and the intensity of the direct beam radiation on a tilted panel with an arbitrary orientation. Additionally, it allows a simple derivation of the equations needed to accurately describe the Equation of Time and the right ascension.
机译:用于推导方程式以描述太阳的视在运动和位置的标准数学方法是球面三角法。另外,对入射在太阳能收集器的表面或建筑表面上的直接束辐射的强度的方程的推导通常也依赖于相同的方法。利用矢量分析的另一种方法被用来导出所有这些方程式。这项技术极大地简化了方程的推导,例如数量的方程式,例如太阳的偏角,高度和方位角,以及任意方向的倾斜面板上的直射束辐射强度。此外,它允许简单推导精确描述时间方程和正确提升所需的方程。

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