The energy-saving effect of display cooler (3)

4. When the food is frozen in the freezing room with a two-speed or variable-speed motor, the heat release is actually uneven heat release Process, so the freezing process requires uneven cooling of the cooling equipment. The freezing process of food consists of three stages: the first stage of is the cooling stage, the food temperature is reduced from above 0℃ to about 0℃; the second stage of is the ice crystal formation stage, the food temperature is reduced from about 0℃ to -5 ℃; the third stage of is the freezing and cooling stage, the food temperature drops from -5℃ to -15℃. Among the three stages of food freezing, the second stage requires the largest amount of cooling. At this time, all the freezing equipment in the display cooler freezing room must be put into operation. In the first and third stages, the heat load per unit time is less , Can appropriately reduce the wind speed, reduce the air volume, in order to achieve the purpose of energy saving. In the past, the air cooler used for freezing was only one speed and could not be adjusted. If the air cooler is equipped with a two-speed or variable-speed motor, the circulating air volume of the freezing can be adjusted to achieve the purpose of energy saving.

5. Coolant refrigeration display cooler Cooler refrigeration with a two-speed motor air cooler. The display cooler is generally used for both refrigeration and cooling. When the goods enter the display cooler, it is used for cooling. At this time, the heat load is large, the air cooler needs a large air volume, and the motor is high-speed gear. When the goods enter the storage period after cooling, the heat load is small, the air volume of the air cooler can be smaller, and the motor is at a low speed to achieve the purpose of energy saving.