Today\'s electric vehicles get about 4.7 miles per kWh. If my round trip commute
ID: 1327492 • Letter: T
Question
Today's electric vehicles get about 4.7 miles per kWh. If my round trip commute is 34 miles, how may m2 of solar panels do I need to provide that energy in 3.0 hours time? Assume the panels are exposed to the sun near noon, and have an efficiency of 10% (solar irradiation is 1.3 kW/m2 ).
Today's electric vehicles get about 4.7 miles per kWh. If my round trip commute is 34 miles, how may m2 of solar panels do I need to provide that energy in 3.0 hours time? Assume the panels are exposed to the sun near noon, and have an efficiency of 10% (solar irradiation is 1.3 kW/m2 ).
Explanation / Answer
given,
vehicle travels for 4.7 miles per kWh
for travelling 34 miles it will need 34 / 4.7 kWh
for travelling 34 miles it will need 7.234 kWh of energy
solar panel produce power at thr rate of 0.13 kW/m^2
in 3 hours it'll produce = 0.13 * 3 kWh / m^2
energy per unit area produced in 3 hours = 0.39 kWh/m^2
area needed to produce 7.234 kWh of energy = 7.234 / 0.39
solar panel of area 18.548 m^2 is needed