Question

Can you tell me how to solve a question in Energy Systems Engineering,2nd Edition, Chapter 10, question 3 and 4

3. This problem is to estimate the yearly kWh provided by 1 m2 of a photovoltaic panel installed on a building at latitude 39.4° north. The panel has the following specifications: Temperature coefficient for cell efficiency: 0.0055°C Permanent tilt angle at 40° sout .Efficiency at rated (1000 W m2, 20°C) conditions: 0.16 ατ value of 0.85 Use will be direct, through an inverter with an efficiency of 93% Assume values of any other parameters that might be needed. Climate data are Mar 13.05 0.48 4.0 Feb Jun an pr 16.43 0.48 11.0 20.53 0.52 17.0 6.15 8.95 22.87 0.43 0.40 0.55 22.0 1.0 0.0 ar Month Jul Aug Sep Oct Nov 7.36 0.44 5.0 Dec H,MJ-m-2 20.32 5.44 0.39 0.0 22.67 16.94 12.25 0.56 0.56 0.57 0.54 24.0 23.0 19.0 13.0 279 Solar Photovoltaic Technologies As a second part of this exercise, quantify the advantage gained by operating the panel at the optimum tilt angle, with monthly adjustments 4. This exercise is to explore the influence of photovoltaic panel temperature coefficient for cell efficiency on the kWh produced from the panel for a month where H 12 MJ m2, K, -0.55, and 18 C. Graph the output for the range of coefficient from 0.001 to 0.01, in steps of 0.001. Assume values of any other parameters that might be needed. Permanent tilt angle at 38°; the panel is located at latitude 43° north .ot value of 0.85 . Temperature coefficient for cell efficiency:0.0055°C-1 .Efficiency at rated (1000 W m2, 20°C) conditions: 0.16

Answer 1

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