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TIL to keep track of units
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this post was submitted on 07 Sep 2024
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cal≠kcal
1 gallon gasoline contains 31 million small calories, while the human caloric requirements are given in large calories. 1000 small calories = 1 large calorie. So the calculations are off by a factor of 1000. The confusion stems from the fact that both are commonly referred to as "calories", for some stupid reason.
So in reality you would have to drink another gallon in just 2-3 weeks.
Still goes to show how energy dense the gasoline is.
Basically same as vegetable oil.
Since used vegetable oil can be used in place of diesel, I'd guess vegetable oil is more energy dense than gasoline...
So based on a random articles I found in internet, mass density of vegetable oil is around 900kg/m^3, and gasoline 800kg/m^3, and since we know that E (energy) equals to m (mass) times c^2 (speed of light squared), we can tell that veggie oil indeed is more energy dense than gasoline.