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- Gasoline_gallon_equivalent abstract "Gasoline gallon equivalent (GGE) or gasoline-equivalent gallon (GEG) is the amount of 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—gasoline. GGE also compares gasoline to fuels sold as a gas (Natural Gas, Propane, Hydrogen) and electricity.In 1994, the U.S. National Institute of Standards and Technology or NIST defined "gasoline gallon equivalent (GGE) means 5.660 pounds of natural gas." Compressed natural gas (CNG), for example, is a gas rather than a liquid. It can be measured by its volume in Standard cubic feet (ft³) (volume at atmospheric conditions), by its weight in pounds (lb) or by its energy content in joules (J) or British thermal units (BTU) or kilowatt-hours (kW·h). It is difficult to compare the cost of gasoline with other fuels if they are sold in different units. GGE solves this. A GGE of CNG and a GGE of electricity all have the same energy content as one gallon of gasoline. CNG sold at filling stations is priced in dollars per GGE.Using GGE to compare fuels for use in an internal combustion engine is only the first part of the equation whose bottom line is useful work. A common definition for useful work is articulated as Miles Per Gallon (MPG). Substituting one fuel for another may permit successful startup of a given engine and the combination may do useful work. However getting optimum efficiency from each fuel/engine combination requires adjusting the mix of air and fuel. This can be a manual adjustment using tools and test instruments or automatic as in a multi-fuel vehicle. Fine tuning of the optimum fuel/air mix may be facilitated by using a supercharger or turbocharger.In battery/electric vehicles, calculating efficiency of useful work begins with the charge/discharge rate of the battery pack, generally 80% to 90%. Next is the conversion of potential energy (BTU) of the charge to distance traveled under power. For example, batteries in a 2012 Nissan Leaf have a listed capacity of 24 kWh. This translates to 0.72 gallons under to a GGE / BTU translations. A standard small gasoline-powered car with 25 MPG efficiency can go 18 miles on this much fuel. However the Nissan Leaf can go 80–100 miles on this much battery charge, or a 111 to 139 MPG equivalent (or 100 to 125 MPG if calculating fuel costs with a battery pack efficiency of 90%). See table below translating retail electricity costs for a GGE in BTU.".
- Gasoline_gallon_equivalent wikiPageID "2224692".
- Gasoline_gallon_equivalent wikiPageRevisionID "604368809".
- Gasoline_gallon_equivalent hasPhotoCollection Gasoline_gallon_equivalent.
- Gasoline_gallon_equivalent subject Category:Units_of_energy.
- Gasoline_gallon_equivalent type Abstraction100002137.
- Gasoline_gallon_equivalent type DefiniteQuantity113576101.
- Gasoline_gallon_equivalent type Measure100033615.
- Gasoline_gallon_equivalent type UnitOfMeasurement113583724.
- Gasoline_gallon_equivalent type UnitsOfEnergy.
- Gasoline_gallon_equivalent comment "Gasoline gallon equivalent (GGE) or gasoline-equivalent gallon (GEG) is the amount of 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—gasoline. GGE also compares gasoline to fuels sold as a gas (Natural Gas, Propane, Hydrogen) and electricity.In 1994, the U.S.".
- Gasoline_gallon_equivalent label "Gasoline gallon equivalent".
- Gasoline_gallon_equivalent sameAs m.06x98n.
- Gasoline_gallon_equivalent sameAs Q5526518.
- Gasoline_gallon_equivalent sameAs Q5526518.
- Gasoline_gallon_equivalent sameAs Gasoline_gallon_equivalent.
- Gasoline_gallon_equivalent wasDerivedFrom Gasoline_gallon_equivalent?oldid=604368809.
- Gasoline_gallon_equivalent isPrimaryTopicOf Gasoline_gallon_equivalent.