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Experimental evaluation of the internal heat exchanger influence on a vapour compression plant energy efficiency working with R22, R134a and R407C

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  • Navarro-Esbrí, J.
  • Cabello, R.
  • Torrella, E.

Abstract

Internal or liquid-suction heat exchangers are used in many refrigeration and air conditioning systems based on the vapour compression cycle, with the basic objective of assuring the entrance of refrigerant in liquid phase to the expansion device. This purpose is achieved by exchanging energy between the cool gaseous refrigerant leaving the evaporator and warm liquid refrigerant exiting the condenser. These devices can have positive or negative influences on the plant overall energy efficiency, depending on the working fluid and the operating conditions. In this paper the experimental results obtained from a refrigeration test facility with and without the presence of an internal heat exchanger, using R22, R134a and R407C as working fluids, are presented and analyzed, including the impact of pressure drops and variations of refrigerant mass flow rate. A comparison between experimental and theoretical results is also enclosed.

Suggested Citation

  • Navarro-Esbrí, J. & Cabello, R. & Torrella, E., 2005. "Experimental evaluation of the internal heat exchanger influence on a vapour compression plant energy efficiency working with R22, R134a and R407C," Energy, Elsevier, vol. 30(5), pages 621-636.
    • Handle: RePEc:eee:energy:v:30:y:2005:i:5:p:621-636
    DOI: 10.1016/j.energy.2004.05.019
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    References listed on IDEAS

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    1. Kim, Man-Hoe, 2002. "Performance evaluation of R-22 alternative mixtures in a breadboard heat pump with pure cross-flow condenser and counter-flow evaporator," Energy, Elsevier, vol. 27(2), pages 167-181.
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    Cited by:

    1. Aprea, C. & Greco, A. & Maiorino, A., 2012. "An experimental evaluation of the greenhouse effect in the substitution of R134a with CO2," Energy, Elsevier, vol. 45(1), pages 753-761.
    2. Kasni Sumeru & Triaji Pangripto Pramudantoro & Andriyanto Setyawan & Rizki Muliawan & Toto Tohir & Mohamad Firdaus bin Sukri, 2022. "Effect of Compressor-Discharge-Cooler Heat-Exchanger Length Using Condensate Water on the Performance of a Split-Type Air Conditioner Using R32 as Working Fluid," Energies, MDPI, vol. 15(21), pages 1-16, October.
    3. Liu, Xuetao & Hu, Yusheng & Wang, Qifan & Yao, Liang & Li, Minxia, 2021. "Energetic, environmental and economic comparative analyses of modified transcritical CO2 heat pump system to replace R134a system for home heating," Energy, Elsevier, vol. 229(C).
    4. 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.
    5. Qian, Suxin & Yu, Jianlin & Yan, Gang, 2017. "A review of regenerative heat exchange methods for various cooling technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 69(C), pages 535-550.

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