In this paper, a transcritical CO 2 heat pump water heater prototype was experimentally
investigated to research the influence of internal heat exchanger (IHX). In addition, the …

Previously, the conventional fin-and-tube heat exchanger is usually chosen as the
evaporator in the air source heat pump. Recently, with the higher heat transfer efficiency, the …

In the last two decades many scientific papers and reports have been published in the field
of the application of the carbon dioxide as a refrigerant for refrigeration (heat pump) systems …

This paper presents a thermodynamic investigation on an ejector expansion transcritical CO
2 refrigeration system with advanced exergy analysis. By splitting the exergy destruction into …

In this work, an overview of the properties of supercritical fluids is given on using water and
carbon dioxide for developing green chemical processes. Present industrial processes and …

The cooling performance of a transcritical CO 2 air conditioning system for an electric bus
was investigated using energy and exergy analyses. The effects of the working conditions …

In this paper, a comparative study of the second law of thermodynamics is presented to
determine the possibility of using HFO-1234yf, an environmentally friendly refrigerant, as a …

The article compares four compression evaporative refrigeration cycles from energy and
exergy points of view where carbon dioxide is considered as the working fluid. The four …

In this paper, two new CO2 cascade refrigeration cycles are proposed and analyzed. In both
these cycles the top cycle is an ejector-expansion transcritical cycle and the bottom cycle is …

In this paper natural refrigerant propylene (R1270) has been proposed for transcritical
cascade refrigeration system and analyzed. Propylene is used in the low temperature (LT) …