One TR

One ton of refrigeration is defined as the refrigerating effect that freezes One ton of liquid water(2000 lbs) during 24 hrs. Water and ice Are both on 0 degree C. 2000 lbs=2000/2205=907 kg Enthalpy of fusion of water at 0 degree=333.43 kJ/kg 1 ton of refrigeration= 907x333.43/24x60=210kJ/min = 3.5kJ/sec=3.5kw