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a average fullsize car has approximately a 7 square meter roof. assume we get 100% of that. times solar gets maybe 200 watts per square meter = 1.4kw. times 6
by joshu 4y ago
a average fullsize car has approximately a 7 square meter roof. assume we get 100% of that.
times solar gets maybe 200 watts per square meter = 1.4kw.
times 6 hours of full solar (if you are lucky) = 8.4kwh.
divided tesla model 3 gets 2.4 kwh per mile (per below) ~ 4 miles range?
- bilsbie 4y agoThe model 3 is around 2.4 kWh per mile. Plus if you get some fold out panels you could at least double that surface area. Now we’re talking 20 miles. https://www.fueleconomy.gov/feg/PowerSearch.do?action=noform&year1=2020&year2=2020&make=Tesla&baseModel=Model%203&srchtyp=ymm https://www.fueleconomy.gov/feg/PowerSearch.do?action=noform...
- joshu 4y agothat's still 3 miles range without the foldout. also the hours of light are very optimistic at best. i'm assuming full output for 6 hours in a a row. i've edited to reflect your numbers. still feels low, but: a model 3 long range has ~ 300 miles of range on an 85kwh battery, so 3.5 miles per kwh?
- dreamcompiler 4y agoNope. It's 0.24 kWh per mile.
- dreamcompiler 4y agoNo car has a 7 square meter roof. 1 square meter would be common, but not 7.
- joshu 4y agoI was being very, very generous and converted average length times average width. One or two square meters tops is more reasonable.
- Schroedingersat 4y agoYou're about an order of magnitude off. 2.4 kWh/mi is a total range of 40 mi for a 100kWh battery. Very good panels are 24%. A reasonable capacity factor for something car shaped is 10% So about 20 miles/day in an open parking spot. More realistically there's probably a lot of spaces you couldn't fit a panel on, so maybe 10-15mi/day reliably in most places. Enough to significantly reduce charging for a moderate commute and errand runner or eliminate it during summer. I'd be a bit sceptical of their claims of reaching similar with polymer cells with such a boxy car though.