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Analysis of energy savings in a supermarket refrigeration/HVAC system

Author

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  • Bahman, Ammar
  • Rosario, Luis
  • Rahman, Muhammad M.

Abstract

The paper analyzes refrigeration/HVAC system energy consumption in a typical food retail store to study the effects of indoor space conditions. Refrigerated display cases are normally rated at a store environment of 24°C (75°F) and a relative humidity of 55%. If the store can be maintained at lower relative humidity, significant quantities of refrigeration energy, defrost energy, and anti-sweat heater energy can be saved. Calculations were done for a typical day in a standard store for each month of the year using the climate data for Tampa, Florida. This results in a 24h variation in the store relative humidity. Using these hourly values of relative humidity for a typical 24hday, the store relative humidity distribution was calculated for a full year. The annual average supermarket relative humidity was found to be 51.1%. It is shown that for a 5% reduction in store relative humidity, the display case refrigeration load is reduced by 9.25%, and that results in total store energy load reduction of 4.84%. The results were compared to available experimental data and found to have a good agreement.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:98:y:2012:i:c:p:11-21
    DOI: 10.1016/j.apenergy.2012.02.043
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    References listed on IDEAS

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    1. 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.
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    4. Ge, Y.T. & Tassou, S.A. & Hadawey, A., 2010. "Simulation of multi-deck medium temperature display cabinets with the integration of CFD and cooling coil models," Applied Energy, Elsevier, vol. 87(10), pages 3178-3188, October.
    5. Manzela, André Aleixo & Hanriot, Sérgio Morais & Cabezas-Gómez, Luben & Sodré, José Ricardo, 2010. "Using engine exhaust gas as energy source for an absorption refrigeration system," Applied Energy, Elsevier, vol. 87(4), pages 1141-1148, April.
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    Cited by:

    1. Iztok Humar & Uroš Hudomalj & Alexander Marinšek & Mark Umberger, 2022. "Optimizing the Power Usage of Anti-Sweat Heaters in Glass-Door Refrigerators According to the Dew Point," Energies, MDPI, vol. 15(13), pages 1-12, June.
    2. Braun, M.R. & Altan, H. & Beck, S.B.M., 2014. "Using regression analysis to predict the future energy consumption of a supermarket in the UK," Applied Energy, Elsevier, vol. 130(C), pages 305-313.
    3. Fahad A. Almehmadi & Kevin P. Hallinan, 2020. "Performance Analysis of an Integrated Solar Dehumidification System with HVAC in A Typical Corner Store in the USA," Sustainability, MDPI, vol. 12(10), pages 1-26, May.
    4. Keniar, Khoudor & Ghali, Kamel & Ghaddar, Nesreen, 2015. "Study of solar regenerated membrane desiccant system to control humidity and decrease energy consumption in office spaces," Applied Energy, Elsevier, vol. 138(C), pages 121-132.

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