B. The client has provided you details of appliances in the house and their ratings as shown in table 1. Using the addit
Posted: Sun May 15, 2022 7:35 pm
B. The client has provided you details of appliances in the house and their ratings as shown in table 1. Using the additional data provided below, design a standalone PV system for the client. [20 marks] Hours/Day Rating (W) 120 4 20 6 50 4 Appliance Three 60W Incandescent Lights Two Fluorescent Outside Light Two Ceiling Fan LCD TV Portable Laptop Wi-Fi Router Refrigerator Washer 70 50 6 10 6 500 5 1500 0.86 1500 0.25 Toaster Additional Data: The system will be powered by 12 Vdc, 110 Wp PV module System voltage = 24V Inverter efficiency = 85%. Maximum Depth of Discharge (MDD) =80% Days of Autonomy = 3 days Battery rating = 12V, 100 Ah Temperature derating factor = 1-0.0044 x (system temperature) Battery efficiency = 80% Average temperature in the location is 40 °C. Sun hours at the location = 9 hours Consider a safety factor of 30% in inverter sizing.