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Impact of room temperature on energy consumption of household refrigerators: Lessons from analysis of field and laboratory data

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  • Harrington, Lloyd
  • Aye, Lu
  • Fuller, Bob

Abstract

Refrigerators are a common appliance in developed and emerging economies around the world. These appliances consume significant energy globally and improving their efficiency is an important aspect of future climate change mitigation. It is widely understood that the energy consumption of household refrigerating appliances is strongly influenced by room temperature and many analysts have identified ambient temperature as the most important factor in normal use. Room temperature has two main effects on the energy consumption of refrigerating appliances. Firstly, the temperature difference between the compartment and the room dictates the heat gain into the appliance through the wall insulation and door seals. A second effect is that a change in room temperature affects the condensing temperature. An increase in room temperature reduces overall refrigeration system efficiency by increasing the difference between the evaporating and condensing temperature. This paper examines laboratory data for 111 appliances where energy consumption is measured at four ambient temperatures from 10 °C to 40 °C. Field data for 235 appliances in homes is also examined. This is more complex to analyse, but it does provide useful information on underlying energy changes due to changes in room temperature during normal use. This paper determines the ratio of energy at 16–32 °C (energy conditions in IEC62552-3) and explores the shape of the energy curve at intermediate temperatures in order to develop a generalised energy curve as a function of temperature for the refrigerating appliances measured. The field data gave highly comparable shape data to that measured in the laboratory. The results provide a useful method to estimate the likely power consumption of different appliance types under a wide range of operating conditions, even where limited data is available.

Suggested Citation

  • 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.
  • Handle: RePEc:eee:appene:v:211:y:2018:i:c:p:346-357
    DOI: 10.1016/j.apenergy.2017.11.060
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    References listed on IDEAS

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    1. 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.
    2. 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.
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    5. 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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    2. Hossieny, Nemat & Shrestha, Som S. & Owusu, Osei A. & Natal, Manuel & Benson, Rick & Desjarlais, Andre, 2019. "Improving the energy efficiency of a refrigerator-freezer through the use of a novel cabinet/door liner based on polylactide biopolymer," Applied Energy, Elsevier, vol. 235(C), pages 1-9.
    3. Mohammad Reza Zavvar Sabegh & Chris Bingham, 2019. "Model Predictive Control with Binary Quadratic Programming for the Scheduled Operation of Domestic Refrigerators," Energies, MDPI, vol. 12(24), pages 1-20, December.
    4. Juan M. Belman-Flores & Diana Pardo-Cely & Miguel A. Gómez-Martínez & Iván Hernández-Pérez & David A. Rodríguez-Valderrama & Yonathan Heredia-Aricapa, 2019. "Thermal and Energy Evaluation of a Domestic Refrigerator under the Influence of the Thermal Load," Energies, MDPI, vol. 12(3), pages 1-16, January.
    5. Biglia, Alessandro & Gemmell, Andrew J. & Foster, Helen J. & Evans, Judith A., 2020. "Energy performance of domestic cold appliances in laboratory and home environments," Energy, Elsevier, vol. 204(C).

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