How Much Solar Paneling Is Required To Produce Electrical Energy To Move A 250 Pound Body In A 250 Pound Cart?
Nov 30, 2009 in
diy
What is the amount of solar energy required to drive a 250 pound cart with a 250 pound person 10 miles? How many square feet of recharged paneling would be required?
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2 comments
macie on November 30, 2009 at 5:41 am
Here is an antique table with guidelines as to how much a man or a horse can draw in a cart at various speeds: http://books.google.com/books?id=rZh-AAA…
On a flat road, you could get away with maybe 1/10 HP, and go 3 mph.
On rails, you could carry 10 times as much weight.
A barge on a canal, 50 times as much.
Allowing for losses, that’s about a 100-watt panel in strong sunlight.
If there is any uphill, that’s an entirely different matter.
mandy on November 30, 2009 at 6:16 am
If you are keen to go slowly enough, all you need from the solar panel is enough to overcome static friction to get the cart started.
I do know that a cyclist cruising along at a moderate speed (say, 10 miles an hour) is expending about 1/10 horsepower. That’s 80 watts. So on flat ground, a 100-watt panel push them over the 10 miles in an hour. Such a panel, if square, would be 2 to 2.5 feet on a side, if made with typical contemporary equipment. If the terrain is more than gently rolling hills, more power would be needed.
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