Quote:
Originally Posted by Christ
I understand what you're saying, but I don't think you're grasping that you can't compare gasoline to propane in this way...
Gasoline and Propane have two differing BTU/volume levels, they have two different densities, and you're attempting to compare apples to oranges here.
The actual comparison will have more weight in research terms if you're using the same fuel in two forms, since all else remains unchanged.
Liquid gasoline vs vaporized gasoline, in the same engine,
Not liquid gasoline in a gasoline engine vs. vaporous propane in a gasoline engine.
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I *believe* that I am grasping it.
I'm trying to compare efficiencies of a system, so I'm taking energy in and comparing it to energy out.
Agreed that the experiment is crude, and ignores other variables like octane and flame speed, but it is a data set which should be easy to obtain and should be easy.
If someone was to convert say a generator from RUG to LPG they would only modify the Carb. inlets.
So if their fuel economy is X on RUG and Y on LPG then
Compare X/Y TO 124,000 btu/91,000 btu.
Reason I used generator is because a buddy of mine has a dual Fuel (LPG/RUG) generator and I'm sure he keeps records on fuel consumption.
NOTE: I have no stake in this argument, I just saw a comment and tried to add *some* science/ data to the point.
Personally I'm of the opinion that everything should either be electric, or compression ignition.