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Heating oil, or oil heat, is a low viscosity, liquid petroleum product used as a fuel for furnaces or boilers in buildings. Home heating oil is often abbreviated as HHO.〔(Consumer Council for Northern Ireland )〕 Heating oil consists of a mixture of petroleum-derived hydrocarbons in the 14- to 20-carbon atom range that condense between during oil refining. Heating oil condenses at a lower temperature than petroleum jelly, bitumen, candle wax, and lubricating oil, but at a higher temperature than kerosene, which condenses between . The heavy (C20+) hydrocarbons condense between . Heating oil produces per US gallon and weighs 8.2 pounds per US gallon (0.95 kg/l).〔North American Combustion Handbook〕 Number 2 fuel oil has a flash point of . Red dyes are usually added, resulting in its "red diesel" name in countries like the United Kingdom. In the U.S. the fuel oil dyed red is not taxed for highway use; the dye makes it easy to identify its use in on-road vehicles. Since 2002, Solvent Yellow 124 has been added as a "Euromarker" in the European Union. Heating oil is commonly delivered by tank truck to residential, commercial and municipal buildings and stored in above-ground storage tanks ("ASTs") located in the basements, garages, or outside adjacent to the building. It is sometimes stored in underground storage tanks (or "USTs") but less often than ASTs. ASTs are used for smaller installations due to the lower cost factor. Heating oil is less commonly used as an industrial fuel or for power generation. Leaks from tanks and piping are an environmental concern. Various federal and state regulations are in place regarding the proper transportation, storage and burning of heating oil, which is classified as a hazardous material (HazMat) by federal regulators. == United States and Canada == Heating oil is known in the United States as No. 2 heating oil. In the U.S., it must conform to ASTM standard D396. Diesel and kerosene, while often confused as being similar or identical, must conform to their own respective ASTM standards. Heating oil is widely used in United States and Canada. The heating oil futures contract trades in units of with a minimum fluctuation of $0.0001 per gallon and (for the USA) is based on delivery in New York Harbor. The Department of Energy tracks the prices homeowners pay for home heating fuel (oil and propane). There are also a number of websites that allow home owners to compare the price per gallon they are paying with the Department of Energy data as well as other consumers in their area. Likewise the (US Energy Information Administration ) collects heating oil price statistics and maintains historical price data for all major US markets during each heating season. Heating oil is mostly used in the northeastern United States, with the majority of that heating oil coming from Irving Oil's refinery in Saint John, New Brunswick, the largest oil refinery in Canada. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「heating oil」の詳細全文を読む スポンサード リンク
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