[DeTomaso] Predicted mileage at 200 MPH

[Michael Shortt]

bout the same a Nextel cup car, 13 gallon cell with a 60-80 mile range.

On 4/4/07, Ken Green <kenn_green at yahoo.com> wrote:
>
> Out of curiosity, I tried to estimate how much gas would be burned to
> travel 100 miles at 200 MPH assuming 500 HP is required to maintain
> speed.  I came up with:
>
>
> 1 HP = 42.21 Btu/min
> so,   500 HP = 21,205 Btu/min at 100% efficiency energy conversion
> but assuming 33% efficiency, 500 HP requires 63,615 Btu/min
>
> 1 gallon of gasoline contain 115,000 to 125,000 BTUs
>
> at 120,000 Btu/gal, 500 HP will burn about 1/2 gallons per minute
> so, at 200 MPH, it takes 30 minutes to travel 100 miles, and 15 gallons of
> gasoline.
>
> It seems reasonable, about 6 MPG.  I've never done this kind of
> calculation before, does anyone see an obvious error?
>
> Ken
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-- 
Michael L. Shortt
Savannah, Georgia


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