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Ethane-Propane Mixture. EIA calculation of 3.308 Thermal Conversion Factor million Btu per barrel based on an assumed mixture of 70 Source Documentation percent ethane and 30 percent propane. See Ethane and Propane. Approximate Heat Content of Petro- Isobutane. EIA adopted the Bureau of Mines thermal conversion factor of 3.974 million Btu per barrel as leum and Natural Gas Plant Liquids published in the California Oil World and Petroleum Indus- try, First Issue, April 1942. Asphalt. The Energy Information Administration (EIA) adopted the thermal conversion factor of 6.636 million Jet Fuel, Kerosene-Type. EIA adopted the Bureau of British thermal units (Btu) per barrel as estimated by the Mines thermal conversion factor of 5.670 million Btu per Bureau of Mines and first published in the Petroleum State- barrel for “Jet Fuel, Commercial” as published by the Texas ment, Annual, 1956. Eastern Transmission Corporation in the report Competition and Growth in American Energy Markets 1947-1985, a Aviation Gasoline. EIA adopted the thermal conversion 1968 release of historical and projected statistics. factor of 5.048 million Btu per barrel as adopted by the Bureau of Mines from the Texas Eastern Transmission Jet Fuel, Naphtha-Type. EIA adopted the Bureau of Corporation publication Competition and Growth in Ameri- Mines thermal conversion factor of 5.355 million Btu per can Energy Markets 1947-1985, a 1968 release of historical barrel for “Jet Fuel, Military” as published by the Texas and projected statistics. Eastern Transmission Corporation in the report Competition and Growth in American Energy Markets 1947-1985, a Butane. EIA adopted the Bureau of Mines thermal conver- 1968 release of historical and projected statistics. sion factor of 4.326 million Btu per barrel as published in the California Oil World and Petroleum Industry, First Kerosene. EIA adopted the Bureau of Mines thermal Issue, April 1942. conversion factor of 5.670 million Btu per barrel as reported in a Bureau of Mines internal memorandum, Butane-Propane Mixture. EIA adopted the Bureau of “Bureau of Mines Standard Average Heating Values of Mines calculation of 4.130 million Btu per barrel based on Various Fuels, Adopted January 3, 1950.” an assumed mixture of 60 percent butane and 40 percent propane. See Butane and Propane. Liquefied Petroleum Gases Consumption. Calculated annually by EIA as the average of the thermal conversion Crude Oil Exports. Assumed by EIA to be 5.800 million factors for all liquefied petroleum gases consumed (see Btu per barrel or equal to the thermal conversion factor for Table A1) weighted by the quantities consumed. The crude oil produced in the United States. See Crude Oil component products of liquefied petroleum gases are ethane Production. (including ethylene), propane (including propylene), normal Crude Oil Imports. Calculated annually by EIA as the butane (including butylene), butane-propane mixtures, average of the thermal conversion factors for each type of ethane-propane mixtures, and isobutane. For 1973-1980, crude oil imported weighted by the quantities imported. quantities consumed are from EIA, Energy Data Reports, Thermal conversion factors for each type were calculated “Petroleum Statement, Annual,” Table 1. For 1981 on a foreign country basis, by determining the average forward, quantities consumed are from EIA, Petroleum American Petroleum Institute (API) gravity of crude oil Supply Annual, Table 2. imported from each foreign country from Form ERA-60 in Lubricants. EIA adopted the thermal conversion factor of 1977 and converting average API gravity to average Btu 6.065 million Btu per barrel as estimated by the Bureau of content by using National Bureau of Standards, Miscellane- Mines and first published in the Petroleum Statement, ous Publication No. 97, Thermal Properties of Petroleum Annual, 1956. Products, 19
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