Carbon dioxide as an alternative refrigerant for automotive air conditioning systems

Mathur, Gursaran D.

doi:10.2514/6.2000-2858

Cited by 2 publications

(1 citation statement)

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“…From then on, several simulations or experiments were executed by different researchers [117][118][119]. Mathur compared the thermodynamic performance of automotive air conditioning (AC) systems using R134a and CO 2 as working fluids [120]. The study revealed that the COP of the CO 2 system is approximately 12% lower than that of the R134a system.…”

Section: Application Of Co 2 Cycle In the Vehicle Fieldmentioning

confidence: 99%

Review of Recent Advances in Transcritical CO2 Heat Pump and Refrigeration Cycles and Their Development in the Vehicle Field

Pei

Cai

et al. 2023

Energies

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Refrigerant substitution is an urgent need in the context of reducing carbon emissions and slowing global warming. CO2 is now being proposed as a promising solution based on its excellent properties and system performance, especially in low-temperature environments. This paper presents an overview of recent advances in system configuration and operation characteristics to improve the performance of transcritical CO2 heat pump and refrigeration systems. The paper first introduces the basic research background, system cycle, and thermodynamic characteristics. Secondly, CO2 cycle improvements with single modifications and modification combinations are reviewed. Then, some important operation characteristics and control methods are discussed. Additionally, the paper provides a detailed description of the development of transcritical CO2 heat pump and refrigeration systems in the vehicle field. At the end of this review, conclusions and opportunities for future work in this field are presented.

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