Originally Posted by
NavyDiver
Still hoping a solar pannel on my roof rack, solar hydrogen generation unit, hydrogen fuel cell and electric motor could make my disco run for free one day
Assuming the disco roof area is 2m x 2m = 4m^2. A 30% efficient solar panel with 700 W/m2 insolation = 210W x 4m^2 = 840 Watts from your roof. But lets be generous and assume your at low latitude and its very sunny so we get 1kW from your roof. A typical battery capacity for a small, light EV is 75kWh so it would take 75 hours continuous to charge. But you only get that 1kW during 8 hours of the day at best so it would take three times longer than that so 75 hours x 3 = 225 hours = 9 days for a charge. And that's being generous :-)
500 km, wait 9 days, 500 km, wait 9 days ..... loop :-)
Mike
Our car: Fuji White MY13 D4 SDV6 SE 3.0 Litre, 8 spd auto.
My car: Series 2a Workshop, 109 inch WB, ex mil., 1971. To be restored.
Wife's car: Series 2a FFT, LWB, ex. mil., 1966. To be restored.
Bookmarks