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 …

To provide alternative refrigerants for R410A in those applications where the GWP (global
warming potential) limit is extremely restrictive in the medium and long term. This work …

This study proposes the low GWP zeotropic mixtures applied in the air source heat pump for
the domestic hot water production using the city water of 15° C. The large glide temperature …

The mutual coupling between different heat sources will reduce the impact of dynamic
environmental conditions on the performance of the heat pump. In this paper, a solar-air …

Despite the wider applications of heat pump, conventional heat pumps face limitations in
cold-region operations. To improve heating performance at low ambient temperatures, a …

The extensive use of CO 2 in commercial refrigeration system has grown in the last two
decade thanks to the development of new components and configurations that allows …

Using CO 2 mixtures results in a simple but effective solution to increase the critical
temperature of CO 2 and reduce its working pressures. However, the overall effect of these …

The pinch point in the gas cooler significantly impacts the optimal discharge pressure and
system performance of the CO 2 heat pump water heater, however the pinch point …

Heat pump technology can effectively recover waste heat from low-grade wastewater, which
is crucial for energy conservation and carbon emission reduction in buildings. In this study …

To further promote the development of efficient and sustainable energy systems, this paper
proposes a new high-efficiency (proton exchange membrane fuel cells)-based transcritical …