| Re: Price of electricity for an electric bicycle.
"Michael Press" <rubrum@pacbell.net> wrote in message
news:rubrum-A2D2CE.19415504012007@newsclstr02.news.prodigy.com ...
> I have questions, but no answers. Please help. Thanks.
>
> What is the price of electricity at the wall outlet?
> Here it is $0.13 to $0.23 /(kilowatt-hour) + 7.5% tax.
> Some electric companies have a stepped price schedule
> so that the rate increases with total usage.
>
> How efficient is a battery charger? Does 60% of the
> energy out of the wall get into the battery?
What type of batteries?... but thats sounds about right for a ball park
> How much power goes into overcoming rolling resistance
> and wind resistance at 15 mph?
Depends on the type of bike of course.....120W for a ball park
http://www.kreuzotter.de/english/espeed.htm
>
> How efficient is the electric motor? 80%?
>
Again sounds like a good enough number
> What is the price of electricity from wall outlet to
> rubber on the road?
>
So 120W at the wheel equals 250W out of the wall.
So if you carry a big enough battery for 4 hours (1kW/hr) it will cost
between $0.13 to $0.23 + 7.5% tax, not bad for a 60 mile trip, of course at
12V that would be a 50Amp/hr battery
|