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Performance simulation of refrigerated display cabinets operating with refrigerants R22 and R404A

Author

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  • Ge, Y.T.
  • Cropper, R.

Abstract

This paper describes the analysis and performance comparison of a display cabinet system using refrigerant R404A and its substitute refrigerant R22. The model of the display cabinet is developed at steady state and integrated from three main component sub-models, air-cooling finned-tube evaporator, air curtain and display cabinet body. The evaporator model is built up based on the distributed method, which can simulate the heat exchangers with different circuit structures. The frost effect on the performance of the evaporator is included in the model. The correlations for the heat transfer and pressure drop calculations of both air and refrigerant sides are purposely selected in the evaporator model. In addition, the evaporator model has been validated with experimental results at steady states from published literature. Several correlated functions from the detailed numerical solution are used for the model of the air curtain. Some simplifications are also utilized for the model of display cabinet body. The performance simulation and comparison of the display cabinet using refrigerants R404A and R22 are carried out at different indoor ambient conditions especially at varied ambient air humidity to mimic the actual indoor space conditions in super stores. Some significant results such as the comparison of cooling load requirement for different refrigerant display cases have been obtained from the simulation, which can significantly contribute to the optimal cabinet design and operating analysis.

Suggested Citation

  • Ge, Y.T. & Cropper, R., 2008. "Performance simulation of refrigerated display cabinets operating with refrigerants R22 and R404A," Applied Energy, Elsevier, vol. 85(8), pages 694-707, August.
    • Handle: RePEc:eee:appene:v:85:y:2008:i:8:p:694-707
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    Citations

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    Cited by:

    1. Alzuwaid, F.A. & Ge, Y.T. & Tassou, S.A. & Sun, J., 2016. "The novel use of phase change materials in an open type refrigerated display cabinet: A theoretical investigation," Applied Energy, Elsevier, vol. 180(C), pages 76-85.
    2. Megdouli, K. & Ejemni, N. & Nahdi, E. & Mhimid, A. & Kairouani, L., 2017. "Thermodynamic analysis of a novel ejector expansion transcritical CO2/N2O cascade refrigeration (NEETCR) system for cooling applications at low temperatures," Energy, Elsevier, vol. 128(C), pages 586-600.
    3. Ge, Y.T. & Tassou, S.A. & Santosa, I. Dewa & Tsamos, K., 2015. "Design optimisation of CO2 gas cooler/condenser in a refrigeration system," Applied Energy, Elsevier, vol. 160(C), pages 973-981.
    4. Bahman, Ammar & Rosario, Luis & Rahman, Muhammad M., 2012. "Analysis of energy savings in a supermarket refrigeration/HVAC system," Applied Energy, Elsevier, vol. 98(C), pages 11-21.
    5. Comakli, K. & Simsek, F. & Comakli, O. & Sahin, B., 2009. "Determination of optimum working conditions R22 and R404A refrigerant mixtures in heat-pumps using Taguchi method," Applied Energy, Elsevier, vol. 86(11), pages 2451-2458, November.
    6. Han, Zongwei & Zhang, Yanqing & Meng, Xin & Liu, Qiankun & Li, Weiliang & Han, Yu & Zhang, Yanhong, 2016. "Simulation study on the operating characteristics of the heat pipe for combined evaporative cooling of computer room air-conditioning system," Energy, Elsevier, vol. 98(C), pages 15-25.
    7. Wang, Q. & Li, D.H. & Wang, J.P. & Sun, T.F. & Han, X.H. & Chen, G.M., 2013. "Numerical investigations on the performance of a single-stage auto-cascade refrigerator operating with two vapor–liquid separators and environmentally benign binary refrigerants," Applied Energy, Elsevier, vol. 112(C), pages 949-955.
    8. Sun, Zhili & Liang, Youcai & Liu, Shengchun & Ji, Weichuan & Zang, Runqing & Liang, Rongzhen & Guo, Zhikai, 2016. "Comparative analysis of thermodynamic performance of a cascade refrigeration system for refrigerant couples R41/R404A and R23/R404A," Applied Energy, Elsevier, vol. 184(C), pages 19-25.

    More about this item

    Keywords

    Refrigeration R404A and R22 Display cabinets Simulation and validation;

    JEL classification:

    • R22 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Household Analysis - - - Other Demand

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