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It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...
Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:
ton, assay (long) AT ≡ 1 mg × 1 long ton ÷ 1 oz t = 32. 6 g ton, assay (short) AT ≡ 1 mg × 1 short ton ÷ 1 oz t = 29.1 6 g ton, long: long tn or ton ≡ 2240 lb = 1 016.046 9088 kg: ton, short: sh tn ≡ 2000 lb = 907.184 74 kg: tonne (mts unit) t ≡ 1000 kg = 1000 kg: wey: ≡ 252 lb = 18 st = 114.305 277 24 kg (variants exist ...
Another unit common in non-metric regions or sectors is the ton of refrigeration, which describes the amount of water at freezing temperature that can be frozen in 24 hours, equivalent to 3.5 kW or 12,000 BTU/h. [1] [2] [3]
1 ton of cooling, a common unit in North American refrigeration and air conditioning applications, is 12,000 Btu/h (3.52 kW). It is the rate of heat transfer needed to freeze 1 short ton (907 kg) of water into ice in 24 hours.
The U.S. Energy Information Administration defines the barrel of oil equivalent as about 6 gigajoules (1.7 megawatt-hours; 5.7 million British thermal units). [1] The value is necessarily approximate as various grades of oil and gas have slightly different heating values.
The tonne of oil equivalent (toe) is a unit of energy defined as the amount of energy released by burning one tonne of crude oil.It is approximately 42 gigajoules or 11.630 megawatt-hours, although as different crude oils have different calorific values, the exact value is defined by convention; several slightly different definitions exist.
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules (1 gigacalorie), [1] which is the approximate energy released in the detonation of a metric tonne (1,000 kilograms) of TNT.