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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

Author

Listed:
  • Kasni Sumeru

    (Department of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung, Bandung 40559, Indonesia)

  • Triaji Pangripto Pramudantoro

    (Department of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung, Bandung 40559, Indonesia)

  • Andriyanto Setyawan

    (Department of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung, Bandung 40559, Indonesia)

  • Rizki Muliawan

    (Department of Refrigeration & Air Conditioning Engineering, Politeknik Negeri Bandung, Bandung 40559, Indonesia)

  • Toto Tohir

    (Department of Electrical Engineering, Politeknik Negeri Bandung, Bandung 40559, Indonesia)

  • Mohamad Firdaus bin Sukri

    (Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Melaka 76100, Malaysia)

Abstract

The utilization of condensate water as a compressor-discharge cooler results in subcooling on the condenser outlet. On the other hand, a split-type air conditioner (A/C) with R32 as working fluid can provide higher compressor-discharge temperatures than other refrigerants used in the same A/C. Therefore, A/C working with R32, equipped with a heat exchanger by utilizing waste-condensate water as the compressor-discharge cooler, has promising potential to produce the largest subcooling effect in air-conditioning systems. The aim of this study is to investigate the effect of condensate water as the compressor-discharge cooler on the performance of an A/C using R32 as the working fluid with different sizes of heat exchanger. The experimental study was carried out on the A/C with a compressor capacity of 1.1 kW, using three different heat-exchanger lengths, i.e., 18, 20 and 22 cm. The results indicated that longer heat exchangers produced higher degrees of subcooling; the heat exchangers with lengths of 18, 20 and 22 cm produced average degrees of subcooling of 0.9, 1.5 and 4.5 K, respectively. Therefore, increments in the degree of subcooling generate improvements in cooling capacity, lowering the compressor-input power, and enhance the COP of the A/C. The average COP improvement of the A/C with heat-exchanger lengths of 18, 20 and 22 cm were 9.1, 14.4 and 27.3%, respectively.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8024-:d:956349
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    References listed on IDEAS

    as
    1. 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.
    2. Zhou, Guobing & Zhang, Yufeng, 2010. "Performance of a split-type air conditioner matched with coiled adiabatic capillary tubes using HCFC22 and HC290," Applied Energy, Elsevier, vol. 87(5), pages 1522-1528, May.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    subcooling; condensate water; cooling capacity; compressor-discharge cooler; R32;
    All these keywords.

    JEL classification:

    • R32 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location - - - Other Spatial Production and Pricing Analysis

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