Abstract:
As a result of environmental problems related to global warming and depletion of the
ozone layer caused by the use of synthetic refrigerants (CFC’s, HCFC’s and HFC’s)
experienced over the last decades, the return to the use of natural substances for
refrigeration purposes, appears to be the best long-term alternative. In this project,
compare different refrigeration pairs for high output. And best pair to optimize design and
operating parameter of the system study operating parameter evaporator temperature
effect, condensing temperature effect, temp difference in cascade lower temperature cycle
and higher temperature cycle, effect of sub cooling, effect of superheating. Analysis
Exergetic efficiency and COP effect of Evaporating Temperature, Condenser
Temperature, Temperature Difference effect, Mass flow ratio. It is calculated by
computer simulation with the calculation software EES (Engineering Equation Solver).
