IIR document

Relationship between specific energy consumption and size of supermarket stores.

Number: pap. n. 283

Author(s) : FOSTER A., BROWN T., EVANS J., et al.


Energy consumption data for 2017 were analysed for 190 retail (supermarket) stores from one retailer in the UK. The relationship between energy consumption and store size was investigated. The mean energy intensity defined by the ratio of electrical energy consumption across the sales floor area was 866 kWh.m-2.yr-1 for an average sales floor area of 469 m2. Plotting energy intensity against store size showed that smaller stores had a higher energy intensity. Measuring energy intensity using electrical energy consumption, total energy consumption, sales or gross floor area, perimeter area of the store and store volume all showed a similar trend. Electrical energy consumption is well correlated with refrigeration capacity (r2 = 0.779), however, it is has a slightly better correlation with sales floor area (r2 = 0.883). . When including these data with other data from previous studies, it can be seen that large stores (supermarkets) had an approximately constant energy intensity (decreasing slightly with increased floor area) and smaller stores (convenience) had a much higher energy intensity which increases strongly with decreasing floor area. Therefore to represent stores ranging from small to large a power law relationship is required.

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  • Original title: Relationship between specific energy consumption and size of supermarket stores.
  • Record ID : 30026664
  • Languages: English
  • Subject: Figures, economy
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0283


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