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Experimental analysis of R744 parallel compression cycle

Author

Listed:
  • Chesi, Andrea
  • Esposito, Fabio
  • Ferrara, Giovanni
  • Ferrari, Lorenzo

Abstract

A diffuse interest on cycle modifications for R744 applications that allow to achieve better CO2 cycles performance can be inferred from the literature. The parallel compression cycle in flash tank configuration seems to be an interesting solution and the authors conducted an experimental campaign to estimate the critical parameters that influence its performance in an actual cycle. Previous to that a thermodynamic analysis was lead to investigate the expectable performance of the cycle and the influence of key parameters such as compressors volumetric flow ratio and separator efficiency. The thermodynamic model designed also allowed the definition of the limit conditions for an optimal operability of the cycle of interest. The experiments showed that the theoretically reachable improvements in terms of refrigerating capacity and coefficient of performance are threatened by several phenomena which may occur in a real system. These detrimental effects are described and commented in the paper. The paper also includes experimental data obtained during the experimental activity for operating conditions typical of commercial refrigeration applications.

Suggested Citation

  • Chesi, Andrea & Esposito, Fabio & Ferrara, Giovanni & Ferrari, Lorenzo, 2014. "Experimental analysis of R744 parallel compression cycle," Applied Energy, Elsevier, vol. 135(C), pages 274-285.
    • Handle: RePEc:eee:appene:v:135:y:2014:i:c:p:274-285
    DOI: 10.1016/j.apenergy.2014.08.087
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    Citations

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    Cited by:

    1. Laura Nebot-Andrés & Daniel Calleja-Anta & Daniel Sánchez & Ramón Cabello & Rodrigo Llopis, 2019. "Thermodynamic Analysis of a CO 2 Refrigeration Cycle with Integrated Mechanical Subcooling," Energies, MDPI, vol. 13(1), pages 1-17, December.
    2. Yu, Binbin & Yang, Jingye & Wang, Dandong & Shi, Junye & Chen, Jiangping, 2019. "An updated review of recent advances on modified technologies in transcritical CO2 refrigeration cycle," Energy, Elsevier, vol. 189(C).
    3. Fang, Zhongcheng & Fan, Chaochao & Yan, Gang & Yu, Jianlin, 2019. "Performance evaluation of a modified refrigeration cycle with parallel compression for refrigerator-freezer applications," Energy, Elsevier, vol. 188(C).
    4. Michal Haida & Rafal Fingas & Wojciech Szwajnoch & Jacek Smolka & Michal Palacz & Jakub Bodys & Andrzej J. Nowak, 2019. "An Object-Oriented R744 Two-Phase Ejector Reduced-Order Model for Dynamic Simulations," Energies, MDPI, vol. 12(7), pages 1-24, April.
    5. J. Catalán-Gil & L. Nebot-Andrés & D. Sánchez & R. Llopis & R. Cabello & D. Calleja-Anta, 2020. "Improvements in CO 2 Booster Architectures with Different Economizer Arrangements," Energies, MDPI, vol. 13(5), pages 1-29, March.
    6. Lawrence Drojetzki & Mieczyslaw Porowski, 2023. "Outdoor Climate as a Decision Variable in the Selection of an Energy-Optimal Refrigeration System Based on Natural Refrigerants for a Supermarket," Energies, MDPI, vol. 16(8), pages 1-24, April.
    7. Ayan Sengupta & Paride Gullo & Mani Sankar Dasgupta & Vahid Khorshidi, 2023. "Performance Analysis of an R744 Supermarket Refrigeration System Integrated with an Organic Rankine Cycle," Energies, MDPI, vol. 16(22), pages 1-18, November.
    8. Yulong Song & Hongsheng Xie & Mengying Yang & Xiangyu Wei & Feng Cao & Xiang Yin, 2023. "A Comprehensive Assessment of the Refrigerant Charging Amount on the Global Performance of a Transcritical CO 2 -Based Bus Air Conditioning and Heat Pump System," Energies, MDPI, vol. 16(6), pages 1-21, March.
    9. Yikai Wang & Yifan He & Yulong Song & Xiang Yin & Feng Cao & Xiaolin Wang, 2021. "Energy and Exergy Analysis of the Air Source Transcritical CO 2 Heat Pump Water Heater Using CO 2 -Based Mixture as Working Fluid," Energies, MDPI, vol. 14(15), pages 1-18, July.
    10. Rajib Uddin Rony & Huojun Yang & Sumathy Krishnan & Jongchul Song, 2019. "Recent Advances in Transcritical CO 2 (R744) Heat Pump System: A Review," Energies, MDPI, vol. 12(3), pages 1-35, January.
    11. Haida, Michal & Smolka, Jacek & Hafner, Armin & Ostrowski, Ziemowit & Palacz, Michal & Nowak, Andrzej J. & Banasiak, Krzysztof, 2018. "System model derivation of the CO2 two-phase ejector based on the CFD-based reduced-order model," Energy, Elsevier, vol. 144(C), pages 941-956.
    12. Yu, Binbin & Yang, Jingye & Wang, Dandong & Shi, Junye & Guo, Zhikai & Chen, Jiangping, 2019. "Experimental energetic analysis of CO2/R41 blends in automobile air-conditioning and heat pump systems," Applied Energy, Elsevier, vol. 239(C), pages 1142-1153.
    13. Artur Bieniek & Jan Kuchmacz & Karol Sztekler & Lukasz Mika & Ewelina Radomska, 2021. "A New Method of Regulating the Cooling Capacity of a Cooling System with CO 2," Energies, MDPI, vol. 14(7), pages 1-18, March.
    14. Jesús Catalán-Gil & Daniel Sánchez & Rodrigo Llopis & Laura Nebot-Andrés & Ramón Cabello, 2018. "Energy Evaluation of Multiple Stage Commercial Refrigeration Architectures Adapted to F-Gas Regulation," Energies, MDPI, vol. 11(7), pages 1-31, July.
    15. Song, Yulong & Wang, Haidan & Ma, Yuan & Yin, Xiang & Cao, Feng, 2022. "Energetic, economic, environmental investigation of carbon dioxide as the refrigeration alternative in new energy bus/railway vehicles’ air conditioning systems," Applied Energy, Elsevier, vol. 305(C).

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