MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 60,207
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
I've posts some of this before, but, ethanol is a massive waste of BTUs. So is gasoline.I did a little reading on the subject. It looks like it takes about 30,000 btu of energy to make a gallon of ethanol, which yields about 70,000 btu. Some of the energy to make ethanol is going to be fossil fuel, such as planting and harvesting the crops. Depending on how the ethanol plant is powered may or may not use fossil fuels. There are certainly some up sides on ethanol. Do they out weigh the downsides? I don’t know.
The most efficient way to get BTUs from corn is burning it. Like in a corn burnings stove or furnace. Somewhere in the 90% efficient rating.
The study I read said something to the effect of the best way to make maximum use of BTUs with the least amount of waste would be to use the most closely to the form they originated in. Each time you convert one thing to another thing, there's a loss of BTUs and efficiency.
The most efficient uses would be for people to heat their homes with corn, run their cars and trucks on natural gas, and use oil for things like large ships and trains.