I am trying to program a conversion between gross an net gallons for petroleum delivery. The formula is based on the specific gravity (API) for the product and the temperature relative to the 60 degree F. I need to know what the mathematical formula is.
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You will have to convert some of the conversion factors if you want everything in
US units.
But the final formula will be something like:
[Gallons of Gasoline] = [kg or lb of Gasoline] x [volume / weight]
x [1 + (Temp - 60) x ( 1710 x 10^-6)]
950 x 10 -6 / deg C at 20 deg C ==> multiply by 1.8 for deg F to get 1710
20 C is close enough to 60 F that you don't have to worry.
What the formula says is gasoline expands by 1710 parts per million per degree fahrenheit.
That's 0.171 % per degree F.
So for every degree above 60F, multiply by 0.00171, subtract from 1.0, that's your conversion factor from hot gallons to standard gallons. For example a factor of 0.900 means one hot gallon is actually 0.9 standard gallons.
And for every degree below 60F, multiply by 0.00171, add to 1.0, that's your conversion factor from cold gallons to standard gallons.
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by: d-glitchPosted on 2007-11-13 at 11:24:30ID: 20274210
From http://www.simetric.co.uk/
Gasoline, Vehicle at 60 F 737.22 kg/m^3
From http://www.ac.wwu.edu/~vaw
Gasoline Volumetric Expansion Coefficient 950 x 10 -6 / deg C at 20 deg C
From http://www.watlow.com/refe
1 cubic meter ==> 264.2 gallons