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Cooling capacity is the measure of a cooling system's ability to remove heat. The SI units are watts (W). Another common unit is the ton, which describes the amount of water at a given temperature that can be frozen in a given amount of time.  1 ton of refrigeration is the ability of a refrigerator to freeze 2000 lb of water at 0 °C or 32 °F in the period of 24 hours. 1 ton of refrigeration is equivalent to 211 kJ/min or 200 Btu/min.
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]
- 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.
- "Cooling Capacity". Furnace Compare (furnacecompare.com). Retrieved 30 October 2011.
- How many? A Dictionary of Units of Measure
- Boles, Yunus A. Çengel, Michael A. (2011). Thermodynamics : an engineering approach (7th ed.). New York: McGraw-Hill. p. 609. ISBN 978-0-07-352932-5.
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