On Jan 2, 2014, at 12:26 PM, Michael Ross <[email protected]> wrote:
> For those EVers that haven't delved into solar PV yet. The sun makes up
> to, but rarely more than 1200 Watts per square meter of area. Sunpower who
> makes about the best commercial panels is about 20% efficient. You have to
> be aimed within 30° of the sun to get the full power from it.
>
> The arithmetic is pretty easy to do from there.
>
> If we call that panel set 2 Meters^2, then you have a potential of about
> 0.2 x 2400W = 480W. Just for estimating's sake, what will a car take for a
> trip in its range? 10kWh? That panel would have to get full sun for 20
> hours. Maybe three days in a sunny place
Yep. We looked at solar panels quite a bit, early on, for our trucks… There’s
essentially no way to drive a consumer-weight vehicle on solar power, but the
panels are just fine for keeping the 12v subsystem charged while the vehicle is
parked (think airport parking lots) despite drain from all the electronic
systems, and even for keeping the air-conditioning going a little bit, so the
vehicle isn’t blazing hot when you get back in.
-Bill
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