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Experimental energetic analysis of a vapor compression refrigeration system with dedicated mechanical sub-cooling

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  • Qureshi, Bilal A.
  • Inam, Muhammad
  • Antar, Mohamed A.
  • Zubair, Syed M.

Abstract

In this work, an experimental investigation into the effects, in terms of energy, of employing a dedicated mechanical subcooling cycle with a residential 1.5ton simple vapor compression refrigeration system is presented. A comparative analysis of the experimental cycle performance is conducted with and without the dedicated subcooler cycle when the room temperature is kept between 18 and 22°C. This is done in order to ascertain the percentage increase in efficiency due to use of a dedicated subcooling loop. R22 is employed as the refrigerant in the main cycle whereas R12 is flowing in the dedicated subcooling cycle. The experimental outcomes indicate that the load carrying capacity of the evaporator increased by approximately 0.5kW when R22 was subcooled, in the main cycle, by 5–8°C. It was also noted that, by using the subcooling, the second-law efficiency of the cycle increased by an average of 21%. Furthermore, the general trend indicated that this percentage increase is inversely proportional to the ambient temperature variation. The experimental work proves that dedicated subcooling can be used for increasing cooling capacity and efficiency.

Suggested Citation

  • Qureshi, Bilal A. & Inam, Muhammad & Antar, Mohamed A. & Zubair, Syed M., 2013. "Experimental energetic analysis of a vapor compression refrigeration system with dedicated mechanical sub-cooling," Applied Energy, Elsevier, vol. 102(C), pages 1035-1041.
    • Handle: RePEc:eee:appene:v:102:y:2013:i:c:p:1035-1041
    DOI: 10.1016/j.apenergy.2012.06.007
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    References listed on IDEAS

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    Cited by:

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    2. Zhang, Hongkuan & Ma, Hongting & Ma, Shuo, 2022. "Energy, exergy, economic and environmental analysis of an indirect evaporative cooling integrated with liquid dehumidification," Energy, Elsevier, vol. 253(C).
    3. Daniel Sánchez & Jesús Catalán-Gil & Ramón Cabello & Daniel Calleja-Anta & Rodrigo Llopis & Laura Nebot-Andrés, 2020. "Experimental Analysis and Optimization of an R744 Transcritical Cycle Working with a Mechanical Subcooling System," Energies, MDPI, vol. 13(12), pages 1-27, June.
    4. She, Xiaohui & Cong, Lin & Nie, Binjian & Leng, Guanghui & Peng, Hao & Chen, Yi & Zhang, Xiaosong & Wen, Tao & Yang, Hongxing & Luo, Yimo, 2018. "Energy-efficient and -economic technologies for air conditioning with vapor compression refrigeration: A comprehensive review," Applied Energy, Elsevier, vol. 232(C), pages 157-186.
    5. Yang, Mina & Jung, Chung Woo & Kang, Yong Tae, 2015. "Development of high efficiency cycles for domestic refrigerator-freezer application," Energy, Elsevier, vol. 93(P2), pages 2258-2266.
    6. Kojok, Farah & Fardoun, Farouk & Younes, Rafic & Outbib, Rachid, 2016. "Hybrid cooling systems: A review and an optimized selection scheme," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 57-80.

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    More about this item

    Keywords

    Subcooling; Experiment; Refrigeration; R12; R22;
    All these keywords.

    JEL classification:

    • R12 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade (economic geography)
    • R22 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Household Analysis - - - Other Demand

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