EN] Refrigeration is one of the technology sectors that has sufered the most changes in the last twenty years,
because of the negative impact of the fuids used in the refrigeration cycles, i.e., refrigerants, due to ...
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 ...