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Performance evaluation of R-22 alternative mixtures in a breadboard heat pump with pure cross-flow condenser and counter-flow evaporator

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  • Kim, Man-Hoe

Abstract

This paper presents results of performance tests for R-22 and four alternative fluids (R-134a, R-32/134a (30/70%), R-407C, and R-410A) at operating conditions typical for a residential air conditioner. The study was performed in an experimental breadboard water-to-water heat pump in which a water/ethylene glycol mixture was used as the heat transfer fluid. The heat exchangers representing the evaporator and condenser were counter flow and cross flow, respectively. In tests performed at the same capacity, R-410A had the highest coefficient of performance. Test results for the system and data characterizing the performance of the heat exchangers and compressor are presented. The impact of the wide variations in the different alternative fluid properties on the system's operation and performance is particularly noted. The benefit of the liquid-line/suction-line heat exchange cycle is also addressed.

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  • 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.
    • Handle: RePEc:eee:energy:v:27:y:2002:i:2:p:167-181
    DOI: 10.1016/S0360-5442(01)00066-4
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    References listed on IDEAS

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    1. Sami, S.M. & Song, B., 1996. "Performance evaluation of a new four-component HFC blend in a vapour-compression heat pump system," Energy, Elsevier, vol. 21(5), pages 361-369.
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    Cited by:

    1. Shukla, Ruchi & Sumathy, K. & Erickson, Phillip & Gong, Jiawei, 2013. "Recent advances in the solar water heating systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 173-190.
    2. 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.
    3. Zheng, Nan & Song, Weidong & Zhao, Li, 2013. "Theoretical and experimental investigations on the changing regularity of the extreme point of the temperature difference between zeotropic mixtures and heat transfer fluid," Energy, Elsevier, vol. 55(C), pages 541-552.

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