British Thermal Unit

British Thermal Unit
(BTU)
  The standard unit for measuring quantity of heat energy. It is the amount of heat energy necessary to raise the temperature of one pound of water one degree Fahrenheit.
  ***
  The quantity of heat required to raise the temperature of 1 pound of liquid water by 1 degree Fahrenheit at the temperature at which water has its greatest density (approximately 39 degrees Fahrenheit).
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary
  ***
  The standard measure of heat energy. It takes one Btu to raise the temperature of one pound of water by one degree Fahrenheit at sea level. For example, it takes about 2,000 Btu to make a pot of coffee. One Btu is equivalent to 252 calories, 778 foot-pounds, 1055 joules, and 0.293 watt-hours. Note: In the abbreviation, only the B is capitalized.
  California Energy Comission. Dictionary of Energy Terms
  ***
  The amount of heat energy required to raise the temperature of one pound of water from 60 degrees F to 61 degrees F at one atmosphere pressure.
  Solar Electric Glossary
  ***
  The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit; equal to 252 calories.

Energy terms . 2014.

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  • British Thermal Unit — Pour les articles homonymes, voir BTU. Le British Thermal Unit (abrégé en Btu ou BTU) est une unité d énergie anglo saxonne qui est définie par la quantité de chaleur nécessaire pour élever la température d une livre anglaise d eau d un degré °F… …   Wikipédia en Français

  • British thermal unit — n. a unit of heat equal to about 252 calories; quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit: abbrev. Btu …   English World dictionary

  • British thermal unit —   [ brɪtɪʃ θəːməl juːnɪt], Einheitenzeichen BTU, auch B. Theodor U. oder B. th. und, in Großbritannien verwendete Einheit der Wärmeenergie: diejenige Wärmemenge, die erforderlich ist, um ein Pound Wasser bei der Temperatur 39,2 ºF und bei einem… …   Universal-Lexikon

  • British thermal unit — n the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at a specified temperature (as 39°F) abbr. Btu * * * (BTU) the amount of heat necessary to raise the temperature of one pound of water one degree …   Medical dictionary

  • British thermal unit — (B.T.U., BTU, Btu) The amount of heat required to raise a pound of water one degree Fahrenheit …   Black's law dictionary

  • British thermal unit — (B.T.U., BTU, Btu) The amount of heat required to raise a pound of water one degree Fahrenheit …   Black's law dictionary

  • British thermal unit — Pour les articles homonymes, voir BTU. Unité d énergie, BTU Le British Thermal Unit (abrégé en Btu ou BTU) est une unité d énergie anglo saxonne qui est définie par la quantité de chaleur nécessaire pour élever la température d une livre anglaise …   Wikipédia en Français

  • British thermal unit — Einheit Norm Angloamerikanisches Maßsystem Einheitenname British thermal unit Einheitenzeichen BTU Dimensionsname Energie Dimensionssymbol …   Deutsch Wikipedia

  • British thermal unit — The British thermal unit (BTU or Btu) is a unit of energy used in the power, steam generation, heating and air conditioning industries. Although it is still used unofficially in metric English speaking countries (such as Canada, the United… …   Wikipedia

  • British thermal unit — Equivalent E*quiv a*lent ([ e]*kw[i^]v [.a]*lent), n. 1. Something equivalent; that which is equal in value, worth, weight, or force; as, to offer an equivalent for damage done. [1913 Webster] He owned that, if the Test Act were repealed, the… …   The Collaborative International Dictionary of English

  • British thermal unit — (Btu or BTU or BThU)    a unit of heat energy defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. In America the British thermal unit is sometimes called the heat unit. In defining the… …   Dictionary of units of measurement

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