In a study of different correlations for the cell temperature, Tc in C, for PV installations...

  

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In a study of different correlations for the cell temperature, Tc in C, for PV installations in deserts, the equation found to be the most accurate is: = T+ a 120+0.739T+G(1-n(T)) 28.6+1.51U where Ta is the ambient temperature in C, G is the irradiance in W/m, 7 is the cell efficiency as a fraction, and U is the wind speed in m/s. Rewrite the equation assuming the effect of Tc on 7 is linear with the parameters for the Suntech STP335S24/Vem module Electrical Characteristics STC STP3355-24/ STP330S-24/ STP325S-24/ Vem Vem Vem Maximum Power at STC (Pmax) 335W 330 W 325 W Optimum Operating Voltage (Vmp) 37.5V 37.3V 37.1 V Optimum Operating Current (Imp) 8.94A 8.85A 8.77A Open Circuit Voltage (Voc) 46.2V 46.0 V 45.8 V Short Circuit Current (Isc) 9.42A 9.35 A 9.28A Module Efficiency 17.3% 17.0% 16.7% Operating Module Temperature -40 C to +85 C Maximum System Voltage Maximum Series Fuse Rating Power Tolerance STC: Irradiance 1000 W/m, module temperature 25 C, AM-1.5; Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3% 1000 V DC (IEC) 20 A 0/+5 W NOCT STP335S-24/ STP330S-24/ STP325S-24/ Vem Vem Vem Maximum Power at NOCT (Pmax) 244W 240W 236W Optimum Operating Voltage (Vmp) 33.8V 33.6V 33.3V Optimum Operating Current (Imp) 7.22A 7.15 A 7.09A Open Circuit Voltage (Voc) 42.1V 41.8V 41.6 V Short Circuit Current (Isc) 7.63A 7.57A 7.52 A NOCT: Irradiance 800 W/m, ambient temperature 20 C, AM-1.5, wind speed 1 m/s Best in Class AAA solar simulator (IEC 60004-9) used, power measurement uncertainty is within +/- 3% Temperature Characteristics Nominal Operating Cell Temperature (NOCT) Temperature Coefficient of Pmax Temperature Coefficient of Voc Temperature Coefficient of Isc Mechanical Characteristics 452C -0.41 %/C -0.34 %/C 0.060 %/C Solar Cell Monocrystalline silicon 156.75 x 156.75 mm (6 inches) No. of Cells 72 (6 x 12) Dimensions Weight Front Glass Frame Junction Box Output Cables Connectors 1956 x 992 x 40mm (77.0 x 39.1 x 1.6 inches) 25.8 kgs (56.9 lbs.) 4.0 mm (0.16 inches) tempered glass Anodized aluminium alloy IP68 rated (3 bypass diodes) TUV (2Pfg1169:2007) 4.0 mm (0.006 inches), symmetrical lengths (-) 1100mm (43.3 inches) and (+) 1100 mm (43.3 inches) MC4 compatible Packing Configuration Container 20'GP 40'GP 40' HC Pieces per pallet 25 25 25 Pallets per container 5 12 24 Pieces per container 125 300 600 In a study of different correlations for the cell temperature, Tc in C, for PV installations in deserts, the equation found to be the most accurate is: = T+ a 120+0.739T+G(1-n(T)) 28.6+1.51U where Ta is the ambient temperature in C, G is the irradiance in W/m, 7 is the cell efficiency as a fraction, and U is the wind speed in m/s. Rewrite the equation assuming the effect of Tc on 7 is linear with the parameters for the Suntech STP335S24/Vem module Electrical Characteristics STC STP3355-24/ STP330S-24/ STP325S-24/ Vem Vem Vem Maximum Power at STC (Pmax) 335W 330 W 325 W Optimum Operating Voltage (Vmp) 37.5V 37.3V 37.1 V Optimum Operating Current (Imp) 8.94A 8.85A 8.77A Open Circuit Voltage (Voc) 46.2V 46.0 V 45.8 V Short Circuit Current (Isc) 9.42A 9.35 A 9.28A Module Efficiency 17.3% 17.0% 16.7% Operating Module Temperature -40 C to +85 C Maximum System Voltage Maximum Series Fuse Rating Power Tolerance STC: Irradiance 1000 W/m, module temperature 25 C, AM-1.5; Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3% 1000 V DC (IEC) 20 A 0/+5 W NOCT STP335S-24/ STP330S-24/ STP325S-24/ Vem Vem Vem Maximum Power at NOCT (Pmax) 244W 240W 236W Optimum Operating Voltage (Vmp) 33.8V 33.6V 33.3V Optimum Operating Current (Imp) 7.22A 7.15 A 7.09A Open Circuit Voltage (Voc) 42.1V 41.8V 41.6 V Short Circuit Current (Isc) 7.63A 7.57A 7.52 A NOCT: Irradiance 800 W/m, ambient temperature 20 C, AM-1.5, wind speed 1 m/s Best in Class AAA solar simulator (IEC 60004-9) used, power measurement uncertainty is within +/- 3% Temperature Characteristics Nominal Operating Cell Temperature (NOCT) Temperature Coefficient of Pmax Temperature Coefficient of Voc Temperature Coefficient of Isc Mechanical Characteristics 452C -0.41 %/C -0.34 %/C 0.060 %/C Solar Cell Monocrystalline silicon 156.75 x 156.75 mm (6 inches) No. of Cells 72 (6 x 12) Dimensions Weight Front Glass Frame Junction Box Output Cables Connectors 1956 x 992 x 40mm (77.0 x 39.1 x 1.6 inches) 25.8 kgs (56.9 lbs.) 4.0 mm (0.16 inches) tempered glass Anodized aluminium alloy IP68 rated (3 bypass diodes) TUV (2Pfg1169:2007) 4.0 mm (0.006 inches), symmetrical lengths (-) 1100mm (43.3 inches) and (+) 1100 mm (43.3 inches) MC4 compatible Packing Configuration Container 20'GP 40'GP 40' HC Pieces per pallet 25 25 25 Pallets per container 5 12 24 Pieces per container 125 300 600