This allows many different commodities with intrinsic energy properties to be compared and contrasted for instance, one of the most popular is natural gas to oil.īTU can also be used pragmatically as a point of reference for the amount of heat that an appliance generates the higher the BTU rating of an appliance, the greater the heating capacity. BTU as a unit of measurement is more useful than physical quantity because of fuel's intrinsic value as an energy source. Even though they're physical commodities and quantified accordingly, such as by volume or barrels, they can be converted to BTUs depending on the energy or heat content inherent in each quantity. 1 watt is approximately 3.412 BTU per hour.īTU is often used as a point of reference for comparing different fuels. 1 BTU = 1,055 joules, 252 calories, 0.293 watt-hours, or the energy released by burning one match. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. The British Thermal Unit, or BTU, is an energy unit. 75☏ for Boston winter, 45☏ for Atlanta winter.
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