EXERGETIC ASSESSMENT OF THE COOLANTS HCFC123, HFC134A, CFC11, AND CFC12

The theoretical performances of HCFC123, HFC134a, CFC11, and CFC12 hav e been assessed as coolants. For a specific amount of desired energy, more compression work is required for HCFC123 and HFC134a than for CFC 11 and CFC12. The differences are not very significant at high evapora tion temperatures and hence HCFC123 and HFC134a should not be excluded as alternative coolants. There is an optimum evaporation temperature for each condensation temperature which yields the highest exergetic e fficiency.