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AMFA specifies the energy content of 100 cubic feet of natural gas to be equal to 0.823 gallons-equivalent of natural gas, and the gallon equivalency of natural gas is considered to have a fuel content, similar to that for alcohol fuels, equal to 0.15 gallons of fuel.
Gasoline gallon equivalent (GGE) or gasoline-equivalent gallon (GEG) is the amount of an alternative fuel it takes to equal the energy content of one liquid gallon of gasoline. GGE allows consumers to compare the energy content of competing fuels against a commonly known fuel, namely gasoline.
(This is given by the change in Gibbs free energy, and is around 45.7 MJ/kg for gasoline.) The actual amount of mechanical work obtained from fuel (the inverse of the specific fuel consumption) depends on the engine. A figure of 17.6 MJ/kg is possible with a gasoline engine, and 19.1 MJ/kg for a diesel engine.
This is around 1 ⁄ 5 (20%) of what is needed to power a standard upright bicycle without aerodynamic cladding at same speed, and 1 ⁄ 50 (2%) of that which is consumed by an average fossil fuel or electric car (the velomobile efficiency corresponds to 4700 miles per US gallon, 2000 km/L, or 0.05 L/100 km). [22]
For a 10-gallon fill-up, the added cost is $1.90. For somebody driving 12,000 miles a year who averages 25 miles per gallon, the added cost would be about $91 per year.
In 1970, a gallon of gas cost 36 cents. By 1981, it had more than tripled to $1.19. For context as to just how bad things are now, $1.19 in 1981 was worth $4.05 in today’s money — gas was ...
Pages for logged out editors learn more. Contributions; Talk; Miles per gallon of gasoline equivalent
The current national gas price average is $3.62 per gallon. The average cost of gas has decreased 15% in the last two years, from when it was $4.27 per gallon. The highest recorded average price ...