Calculation method of building solar energy acquisition potential index

The invention belongs to the field of building design, and discloses a method for calculating a building solar energy acquisition potential index, which comprises the following steps of: acquiring a solar azimuth angle and a solar altitude angle corresponding to sunrise and sunset moments, forming a fan-shaped calculation range, and acquiring a plurality of calculation line segments in the fan-shaped calculation range; obtaining the solar altitude tangent value of the calculation line segment at the corresponding moment, the ratio of the height of the sheltered building to the distance between the sheltered building and the building to be measured, and obtaining the difference between the solar altitude tangent value and the ratio to obtain a difference value; obtaining the approximate direct solar radiation irradiance of the calculation line segment at the moment corresponding to the calculation line segment, taking the approximate direct solar radiation irradiance as a weight, and giving the difference valu