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Debajyoti Bose et al /International Journal of ChemTech Research, 2017,10(4): 103-114. 105 The daily diffuse to global radiation ratio can be correlated with the daily global to extraterrestrial radiation ratio. It was expressed by a cubic equation: () (4) Where = monthly average for daily diffuse radiation on a horizontal surface, in kJ/m2/day. The equipment used for the experiments is the Solar Photovoltaic Training Kit of INSIGHT SOLAR. It’s composed of two adjustable photovoltaic modules with regulated lamps and a main controller to connect the terminals and take the readings. So the sunlight will be simulated by halogen lamps. Figure 1: The Control Panel (left) and the PV modules I and II (right) used for this investigation The characteristics of the modules are: polycrystalline, Pmpp = 40 W, Voc = 21,90 V, Isc = 2,45 A, Vmpp = 17,40 V, Impp = 2,30 A, which represents voltage at open circuit (OC) and current at short circuit (SC) along with V-I at maximum power point (MPP). Power specification is measured at standard test condition insolation: 1000 W/m2, 25°C (Cell temperature). The Power curves for the modules with varying light intensity have been discussed further. 0.5 0.4 0.3 0.2 0.1 134,97 W/m2 79,67 W/m2 60,97 W/m2 Module 1: I (V) Temperature = cst 0 0 5 10 15 20 25 Voltage (V) Current (A) Figure 2: Radiation has a big influence on the short circuit current, the current increases while the radiation increases. However its influence on the open circuit voltage is very low but the effect is the same, the voltage increases while the radiation increases.PDF Image | Renewable Electrolysis using Graphene electrodes
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