THE GRAPHIC ANALYTICAL METHOD OF FLAT SOLAR COLLECTOR ENERGETIC AND OPTICAL CHARACTERISTICS

The work herein considers the graphic-analytical method of the flat solar collector's energetic and optical characteristics. There has been computed the total solar radiation on the solar collectors' inclined surfaces. In the research methodology, as an example of the total solar radiation computation, there has been taken Astana city. According to the observation data it is seen, that the solar radiation duration falls in summer. So, by means of graphic-analytical method there has been computed the distributions of direct solar radiation flow stream density, optical performance coefficient from direct solar radiation flow stream density and total flow to the receiver. Optical performance coefficient has constituted 66%.It proves the correctness of the solar collector parameters selection.