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Transient simulation of household refrigerators: A semi-empirical quasi-steady approach

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  • Borges, Bruno N.
  • Hermes, Christian J.L.
  • Gonçalves, Joaquim M.
  • Melo, Cláudio

Abstract

This paper outlines a simulation model for the cycling behavior of household refrigerators and, therefore, for predicting their energy consumption. The modeling methodology follows a quasi-steady approach, where the refrigeration system and also the refrigerated compartments are modeled following steady-state and transient approaches, respectively. The mass, energy and momentum conservation principles were used to put forward the equation set, whereas experimental data were collected and used to reduce the model closing parameters such as the thermal conductances and capacitances. The experiments were carried out using a controlled temperature and humidity environmental chamber. The model predictions were compared to experimental data, when it was found that the energy consumption is well predicted by the model with a maximum deviation of ±2%. A sensitivity analysis was also carried out to identify opportunities for energy savings.

Suggested Citation

  • Borges, Bruno N. & Hermes, Christian J.L. & Gonçalves, Joaquim M. & Melo, Cláudio, 2011. "Transient simulation of household refrigerators: A semi-empirical quasi-steady approach," Applied Energy, Elsevier, vol. 88(3), pages 748-754, March.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:3:p:748-754
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    References listed on IDEAS

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    1. Hermes, Christian J.L. & Melo, Cláudio & Knabben, Fernando T. & Gonçalves, Joaquim M., 2009. "Prediction of the energy consumption of household refrigerators and freezers via steady-state simulation," Applied Energy, Elsevier, vol. 86(7-8), pages 1311-1319, July.
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    1. Mastrullo, R. & Mauro, A.W. & Menna, L. & Palma, A. & Vanoli, G.P., 2014. "Transient model of a vertical freezer with door openings and defrost effects," Applied Energy, Elsevier, vol. 121(C), pages 38-50.
    2. Harrington, Lloyd & Aye, Lu & Fuller, Bob, 2018. "Impact of room temperature on energy consumption of household refrigerators: Lessons from analysis of field and laboratory data," Applied Energy, Elsevier, vol. 211(C), pages 346-357.
    3. Waltrich, Maicon & Hermes, Christian J.L. & Melo, Cláudio, 2011. "Simulation-based design and optimization of refrigeration cassettes," Applied Energy, Elsevier, vol. 88(12), pages 4756-4765.
    4. Negrão, Cezar O.R. & Hermes, Christian J.L., 2011. "Energy and cost savings in household refrigerating appliances: A simulation-based design approach," Applied Energy, Elsevier, vol. 88(9), pages 3051-3060.
    5. 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.
    6. Wu, H. & Tassou, S.A. & Karayiannis, T.G., 2013. "Modelling and control approaches for energy reduction in continuous frying systems," Applied Energy, Elsevier, vol. 112(C), pages 939-948.
    7. Borges, Bruno N. & Melo, Cláudio & Hermes, Christian J.L., 2015. "Transient simulation of a two-door frost-free refrigerator subjected to periodic door opening and evaporator frosting," Applied Energy, Elsevier, vol. 147(C), pages 386-395.

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