Computer Program for Climatological Parameters Calculation and Radiation Simulation

Abstract

The paper presents software developed for the determination of the basic input data used to design a renewable solar energy system. The computer program calculates the angles that describe the apparent movement of the Sun in the sky. It allows the user an interactive selection of both the site and the period of time desired, as well as the calculation of various elements, such as: solar angles, air mass, Linke turbidity factor, and solar radiation received on a horizontal or tilted surface. The computer program also permits a graphical display of the variation in solar elevation and azimuth angles during equinoxes and solstices, as well as of the sunchart diagrams.