1/16/2023 0 Comments Solar flux![]() ![]() The second location is Al-Jubailcity in the east of Saudi Arabia. First location is Al-Baha city which locate in the southwest of Saudi Arabia. ![]() Each location has its private weather data. In the present work experimental set up, one unit of the PV module was examined with change of wind speed and direct solar irradiance in two different locations inSaudi Arabia. These two parameters have a significant effect on the performance of PV module. ![]() The aim of present work is to investigate the performance of photovoltaic modules (PV) influence by wind speed and direct solar irradiance in Saudi Arabia. Thus the application of of photovoltaic technology in the conversion of solar energy to electricity within the region under study is favourable than in cool climate. Hence an increase in solar flux combined, with low relative humidity leads to increase in output current and efficiency of the panel while the electrical efficiency drops with increase in operating temperature. With good working temperature of solar cells of about 43oC, low relative humidity of about 70%, 76%, solar flux of about 78.85kiloflux, with an open current of 18.42 x -1 10 A, it is possible to obtain efficiency of up to 82.28% from the solar panel. Relatively uniform day light hours and high solar altitude throughout the year enhances solar radiation which is rich in proton. The research further confirms that the ambient temperature has no direct effect on the solar panel temperature rather solar flux do have effect. The effect of relative humidity on both current and efficiency are observed to be the same. The research shows that there is a direct proportionality between current, solar flux and efficiency as shown in figures 4 and 6. The fluctuation in solar panel occasioned by cloud movement during the day shows that ambient temperature does not affect the solar panel temperature directly. The solar panel temperature drops relatively faster than the ambient temperature due to low proton from the sun. This is because at this time, there is a high solar flux from the sun resulting to high amount of proton reaching the panel. At noon, the solar panel temperature increases rapidly than the ambient temperature. This is because the solar cells are cased with glass and aluminium material which have low temperature at room temperature. During the early hours of the morning, the solar panel temperature is lower than the ambient temperature. Figure 9 shows that efficiency is high during low relative humidity. Figure 8 indicates that increase in voltage leads to decrease in relative humidity. Figure 7 shows that when current increases, relative humidity drops which means low water vapour in the atmosphere, resulting to high flux which enhances high current production. This further proves that current output determines the efficiency of the photovoltaic module. Figure 6 depicts that efficiency and solar flux are directly proportional just like current and solar flux. The decrease observed at the end of the curve was due to clear sky occasioned by high solar flux. Voltage remains almost stable despite increase in solar flux, (see figure 5). Increase in solar flux has no effect on the output voltage. Decrease in solar flux leads to decrease in current as experienced during haze, cloud cover, dust and sun set. This is because increase in solar flux (illumination) causes an increase in photon from the sun which strikes the solar cell junction, thus increasing the electron-pair production and the mobility carriers. Figure 4 shows increase in current is directly proportional to solar flux. insignificant effect on the voltage output, while figure 3 indicates that high temperature does not favour high performance of the photovoltaic module. ![]()
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