Manager Chen, who runs a chain fast-food restaurant, was shocked when he received the electricity bill last month: the two cold storage units in the kitchen consumed more than 2,000 kWh of electricity in a month, costing nearly 1,000 yuan more than usual. Later, he invited professional personnel to check on-site and found that as long as 3 small details are well handled, energy consumption can be effectively reduced. Now, the monthly electricity bill has been cut by more than 300 yuan directly.

         The first key is to set the temperature reasonably. Previously, for "safety", the staff set the temperature of the frozen meat area to -30℃. Ho wever, professionals said that the optimal temperature for frozen meat storage is -18℃, and for every 1℃ lower the temperature is set, energy consumption will increase by 3%-5%. After adjustment, the quality of the frozen meat was not affected, and this item alone saved more than 80 kWh of electricity per month. Manager Chen also specially pasted a reminder note next to the thermostat to prevent employees from adjusting it by mistake.

         The second tip is regular cleaning and maintenance. During the inspection, it was found that a thick layer of dust had accumulated on the condenser, reducing the heat dissipation efficiency by nearly 20%. Now, the kitchen has a rule to clean the condenser with a soft brush every week and blow the evaporator with compressed air every month. After cleaning, the cooling speed of the unit has become much faster, and the operating frequency of the fan has also decreased, so energy consumption has naturally dropped.

          The third key point is to check the sealing performance. The sealing strip of the cold storage door had been used for two years and had aged and cracked, leading to cold air leakage, so the unit had to start frequently to make up for the cold loss. After replacing it with a new silicone sealing strip, no air leakage could be felt when putting hands against the door gap. The unit's operation time was reduced by 2 hours every day, saving another 100 kWh of electricity per month.

           Now Manager Chen often shares with other merchants: "I used to think that high electricity consumption of cold storage units was normal. I never expected that a few small tips could save so much money. It's a considerable expense in the long run. I wish I had known this earlier to save worry!"