การประเมินศักยภาพการผลิตพลังงานไฟฟ้าจากเซลล์แสงอาทิตย์บนหลังคาโดยใช้แบบจำลองทางคณิตศาสตร์: กรณีศึกษา อาคารสำนักวิทยบริการ มหาวิทยาลัยมหาสารคาม EVALUATION OF ELECTRICITY GENERATION POTENTIAL FROM SOLAR ROOFTOP USING THE MATHEMATICAL MODEL: CASE STUDY OF ACADEMICS RESOURCE CENTER BUILDING, MAHASARAKHAM UNIVERSITY
Keywords:
Solar Rooftop, Solar Radiation, Evaluation of PotentialAbstract
The purpose of this research is to evaluate the electricity generation potential from solar rooftop under a condition of solar radiation following a roof direction of the academic resource center building (A building), Mahasarakham University, Khamriang campus, Kantharawichai district, Mahasarakham province. The mathematical model on Microsoft Excel program was used in this analysis. The methods of the research are as follows: (1) the building plan analyzing by AutoCAD program was used in the evaluation of geographic potential; (2) the solar radiation data from the solar measurement station of faculty of engineering, Mahasarakham University was used in the evaluation of solar radiation potential following the roof direction; (3) the solar radiation data, the ambient temperature data from 4 meteorological station, Khon Kaen and Roi Et province, and the fundamental property of the solar cell, type of SW 285-300MONO (5-busbar) were used in the evaluation of power and electricity; and (4) the evaluation of array yield. The standard of international energy agency (IEA-PVPS T2-03:2002) was used in an evaluation of electricity generation potential from the solar rooftop. The result of this potential has been shown with the geographic information system. The total area of the A building has been found that 2,744.00 m2, and It has been classified in 6 directions. There are 165 (NE1), 75 (SE2), 30 (SE1), -15 (SW1), -105 (NW1) and -150 (NW2). The total solar roof installation is 972 panels, and the total power is 291.60 kW. The highest average solar radiation of SW1, SE1, NW1, SE2, NW2, and NE1 are 5.84, 5.61, 5.30, 5.19, 4.72 and 4.45 kWh/m2-d, respectively. Hence it affects the value of array yield (Ya) is 154.86, 148.54, 139.08, 136.88, 122.35 and 114.97 kWh/kWp, respectively. The highest electric potential of SE1, NW1, NW2, SW1, NE1, and SE2 are 100.53, 86.62, 75.76, 74.15, 71.61 and 65.54 MWh/y, respectively. The total electricity is 474.20 MWh/y. Therefore, the evaluation of electricity generation potential from the solar rooftop is important to find out the highest array yield position.
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