Cooling capacity

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Cooling capacity is the measure of a cooling system's ability to remove heat.[1] The SI units are watts (W). Another common unit is the ton of refrigeration, which describes the amount of water at freezing temperature that can be frozen in a day (24 hours).[2] [3] 1 ton of refrigeration is equivalent to 211 kJ/min or 200 Btu/min.[1]

The basic SI units equation for deriving cooling capacity is of the form:


is the cooling capacity [kW]
is the mass rate [kg/s]
is the specific heat capacity [kJ/kg K]
is the temperature change [K]


  1. ^ a b Boles, Yunus A. Çengel, Michael A. (2011). Thermodynamics : an engineering approach (7th ed.). New York: McGraw-Hill. p. 608. ISBN 978-0-07-352932-5.
  2. ^ "Cooling Capacity". Furnace Compare ( Retrieved 30 October 2011.
  3. ^ How many? A Dictionary of Units of Measure