Several environmental protection policies have been enforced restricting working fluids with
high global warming potential (GWP) values used in many types of refrigeration and heat …

Usage of eco-friendly refrigerants could be an effective solution to the global warming
problem. However, a comprehensive assessment is necessary when selecting new …

As a natural refrigerant, Carbon Dioxide (CO 2) has been extended in almost all refrigeration
fields due to its environmental friendliness, high availability, and high technological …

Due to the environmental concerns, refrigerants with low global warming potential (GWP)
are good alternatives to use in the most refrigeration system. In this paper, an energy …

This work evaluates the thermodynamic performance of three different mixed refrigerants:
R744/R1270, R744/R717 and R744/RE170 in a cascade refrigeration system composed of …

Blends of CO 2 with ten low-global warming potential (GWP) working fluids are evaluated for
use in a heat pump water heater. The effects that the discharge pressure, component ratio …

There is a great demand for clean, high-temperature heating in industries. The present work
demonstrates the modeling and analysis of a high-temperature heat pump (HTHP) using a …

We present the experimental evaluation of a R134a/CO 2 cascade refrigeration plant
designed for low evaporation temperature in commercial refrigeration applications. The test …

Herein, we proposed a cascade refrigerant system with R1270 and carbon dioxide
refrigerants. The natural refrigerant R1270 was adopted in the high-temperature circuit to …

The objective of this work is the comparison of the different cascade refrigeration systems
with CO2 in the low-temperature circuit. A total of 18 different cascade refrigeration systems …