Tons of Refrigeration

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TR      -     Tons of Refrigeration





-It Is a unit of refrigeration.

-The rating of a refrigeration machine is given by a standard unit of refrigeration called Ton of Refrigeration.

-One a ton of refrigeration (1TR) means the capacity to freeze 1 ton of water from and at 0’ in 24 Hrs.


It's important to note that the freezing or melting of the ice represents a change-of-state only, which is considered a transfer of latent heat, as opposed to a change in temperature which is a transfer of sensible heat.



Calculation

•In USA 1 ton is taken as 2000lbs and its latent of fusion 144 B.Th. U/lb (334.9 KJ/Kg).

               1 TR = (2000x144)/24

                        = 12000 B Th U/hr

                        = 200 B Th U /Min

                   1 B Th U =1.055 KJ

                 1 TR =200 x1.055 KJ/Min

                          = 211 KJ/Min

                       1 TR = 3.517 KJ/s or KW


Important Conversion

 1 TR       = 12000 B Th U/hr

                = 3.514 KW

           = 3024KC/hr

Video on TR 





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