Unlike other refrigerants, R744 (or carbon dioxide) has a very low critical temperature (30.98 C) which
hampers working in subcritical conditions especially when the environment is used as a heat rejection
sink. ...
International agreements will restrict in the near future the use of high-GWP refrigerants in Europe.
These restrictions will favour the implantation of refrigeration systems with low-GWP fluids, especially
in applications ...
This work presents the experimental evaluation of the energy performance of a modified single-stage CO2 transcritical refrigeration plant with an internal heat exchanger (IHX) based on vapour injection in suction line. ...
We present the experimental evaluation of a R134a/CO2 cascade refrigeration plant designed for low evaporation temperature in commercial refrigeration applications. The test bench incorporates two single-stage vapour ...
IHX is probably, one of the most commonly alternative used to improve cooling capacity and COP in a CO2
refrigerating plant working in supercritical conditions. The classical position at gas-cooler exit has been
analyzed ...