Ton (RT)
Ton (RT) :
A unit of power used in refrigeration engineering. One ton of refrigeration is intended to be the power required to freeze one short ton of water at 0°C in 24 hours. This is assumed to be exactly 12 000 Btu per hour (Btu/h or "Btuh"), which is equivalent to 200 Btu/min, 3.516 853 kilowatts, 4.7162 horsepower, or 0.8396 (kilogram) Calorie per second (Cal/s). The symbol RT seems to be in wide use for this unit, but it is also used for the register ton (definition [3] above)
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