The use of high temperature heat pumps (HTHPs) operating with natural fluids has been
shown to be a potential environmentally friendly solution to increase energy efficiency in …

In this paper, a comprehensive review on building applications of heat recovery systems is
presented. The review is given as a clear and understandable summary of the previous …

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 …

Carbon dioxide is a safe, economic and environmentally sustainable refrigerant which can
be used in heat pump and refrigeration systems. Research into the performance and …

With a constant-pressure mixing ejector, the performance characteristics of an ejector-
expansion refrigeration cycle (EERC) using R1234yf as refrigerant have been investigated …

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 …

Heat pump (HP) is one of the most energy efficient tools for address heating and possibly
cooling needs in buildings. Growing environmental concerns over conventional HP …

Due to less environmental impact, the CO2 booster refrigeration system has been widely
applied in the modern supermarket as a substitute for the conventional R404A multiplex …

This study investigates the heating performance of a heat pump system for an electric bus by
using carbon dioxide (CO 2) as refrigerant in cold climate. The effects of the outdoor 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 …