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Vertical display cabinets without and with doors: a comparison of measurements in a laboratory and in supermarket.

Author(s) : LINDBERG U., AXELL M., FAHLÉN P.

Summary

Supermarkets are significant energy users and storage of refrigerated food accounts for approximately 40-50% of their total electricity use. The open vertical display cabinet is a common type of cabinet and accounts for a substantial part of this use. An open-front design makes the cabinet sensitive for infiltration of warmer and humid ambient air, but infiltration can be reduced by fitting doors to the cabinets. This paper presents results from laboratory measurements and field measurements in a supermarket on vertical cabinets without and with doors. The direct electric input, the heat extraction rate and the food temperatures were investigated. In the laboratory different opening frequencies on the doors were tested. The brine inlet temperature to the cabinet could be increased so that it was possible to avoid totally any frost growth in the cabinet air-cooler. Potential energy savings during daytime operation by fitting doors to an open cabinet exceed 60%.

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Pages: 2010-1

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Details

  • Original title: Vertical display cabinets without and with doors: a comparison of measurements in a laboratory and in supermarket.
  • Record ID : 2010-0807
  • Languages: English
  • Source: 1st IIR International Conference on Sustainability and the Cold Chain
  • Publication date: 2010/03/29

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