An Example of Remote Monitoring for A Refrigerated Display Cabinet: Effects on Energy Performance

Abstract

Refrigerated display cabinets, which are widely used in supermarkets, are one of the parts of the cold chain. These refrigerators are used for both cold storage and frozen storage of products at specific temperature ranges by standards. In refrigerated display cabinets, the air refrigerated by the heat drawn by the evaporator is blown to the food products. Due to negative interactions with hot ambient air, open-type refrigerated display cabinets consume large amounts of electrical energy. Therefore, the refrigerated display cabinet must have high energy efficiency. Energy labeling was made mandatory for refrigerated display cabinets launched in 2021 and energy labeling was classified from A to G. With this application, refrigerators are classified according to their efficiency. The energy consumption values of the compressor, evaporator fan, condenser fan, PTC resistor, and lighting units that cause energy consumption in the refrigerator were determined, and an algorithm was developed to keep these parameters under control. With this algorithm, energy consumption data is presented and, possible problems are detected, and warnings are given for these problems. With this algorithm that warns the refrigerator when necessary, malfunctions that may occur in the refrigerating system will be prevented. With this remote monitoring method, which aims to check whether the refrigerated display cabinets' meet the energy consumption values specified by the manufacturer under actual operating conditions, the impact of the remote monitoring method on energy efficiency has been revealed, and it was concluded that it can contribute to operational efficiency by reducing energy costs and carbon emissions.

Keywords

• Refrigerated display cabinet
• Energy label
• Energy efficiency
• Remote monitoring
• Refrigerating systems

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