An updated review of recent advances on modified technologies in transcritical CO2 refrigeration cycle

B Yu, J Yang, D Wang, J Shi, J Chen - Energy, 2019 - Elsevier
With carbon emission levels on the rise, rapid and far-reaching action is needed to
counteract global warming. Among many available strategies, CO 2 is nowadays more and …

Subcooling methods for CO2 refrigeration cycles: A review

R Llopis, L Nebot-Andrés, D Sánchez… - International Journal of …, 2018 - Elsevier
CO 2 subcooling has resulted a method to upgrade the performance of CO 2 refrigeration
plants in the recent years, with overall improvements up to 12% with internal heat …

Optimal design and environmental, energy and exergy analysis of a vapor compression refrigeration system using R290, R1234yf, and R744 as alternatives to replace …

CH de Paula, WM Duarte, TTM Rocha… - International Journal of …, 2020 - Elsevier
This paper presents a steady-state model of a vapor compression refrigeration system
(VCRS) that produces 1200 l of chilled water (5° C) for an indirect expansion air …

[HTML][HTML] Modeling and investigation of the performance of a solar-assisted ground-coupled CO2 heat pump for space and water heating

TA Sazon, H Nikpey - Applied Thermal Engineering, 2024 - Elsevier
The rise in the popularity of heat pumps should be accompanied by the increase in the
utilization of environmentally-safe working fluids. To push for wider uptake of hybrid heat …

[HTML][HTML] Replacement of halogenated refrigerants towards sustainable cooling system: A review

Z Roy, G Halder - Chemical Engineering Journal Advances, 2020 - Elsevier
Stratospheric ozone depletion and global temperature elevation resulting from the discharge
of refrigerants from conventional cooling systems have demonstrated to be a menace to …

Energetic performance of transcritical CO2 refrigeration cycles with mechanical subcooling using zeotropic mixture as refrigerant

B Dai, S Liu, H Li, Z Sun, M Song, Q Yang, Y Ma - Energy, 2018 - Elsevier
Transcritical CO 2 refrigeration cycle integrated with mechanical subcooling (MS) cycle
operating with zeotropic mixture is proposed in this study, based on the concept of Lorenz …

Improving efficiency of transcritical CO2 cycles through a magnetic refrigeration subcooling system

L Nebot-Andrés, MG Del Duca, C Aprea… - Energy Conversion and …, 2022 - Elsevier
Subcooling methods for transcritical CO 2 plants are being studied in order to improve the
behaviour of these systems in hot climates, where basic configurations are not competitive …

Optimal discharge pressure in transcritical CO2 heat pump water heater with internal heat exchanger based on pinch point analysis

Z Ye, Y Wang, Y Song, X Yin, F Cao - International Journal of Refrigeration, 2020 - Elsevier
In transcritical CO 2 heat pump water heater, the pinch point in gas cooler and the utilization
of internal heat exchanger (IHX) both have a significant impact on the optimal discharge …

Experimental determination of the optimum intermediate and gas-cooler pressures of a commercial transcritical CO2 refrigeration plant with parallel compression

L Nebot-Andrés, D Sánchez, D Calleja-Anta… - Applied Thermal …, 2021 - Elsevier
CO 2 systems used in refrigeration are becoming more complex with the aim of improving
their energy performance. Parallel compression is one of the implemented solutions to …

Effect of drying air supply temperature and internal heat exchanger on performance of a novel closed-loop transcritical CO2 air source heat pump drying system

Y Hou, W Wu, Z Li, X Yu, T Zeng - Renewable Energy, 2023 - Elsevier
A novel closed-loop transcritical CO 2 air-source heat pump drying (HPD) system with a
relatively simple structure, higher drying temperature, and internal heat exchanger (IHX) for …