In the process of cooling, freezing, refrigerating (cooling and freezing) , the weight of food is reduced due to evaporation of water in the food or sublimation of ice crystals, commonly known as “dry consumptionâ€. When the food is dry, not only the weight loss, but also the surface will appear dry, and the quality of the food will also decrease. For example, if the dry consumption of fruits and vegetables reaches 5% , the fresh and full appearance will be lost and obvious wilting will occur. The egg chamber is enlarged due to evaporation of water during cooling storage. In the storage of frozen fish, the surface of the ice crystals appears to be dry, and the fat is oxidized and rancid under the action of oxygen in the air. The surface is yellow and brown, not only the appearance is deteriorated, but also the taste, flavor and nutritional value are reduced. Due to the long shelf life of food, the problem of dry consumption is more prominent. When the heat insulation effect of the frozen storage room is not good, the external heat is introduced; the temperature of the frozen indoor air changes drastically; the temperature difference between the air cooler and the frozen indoor air temperature is too large; the freezing of the product temperature is high. Food; frozen indoor air flow too fast will increase the dry consumption of frozen food.    In order to avoid and reduce the dry consumption of food in the frozen storage, an important problem is to prevent the introduction of external heat and improve the heat insulation effect of the peripheral structure of the cold storage. Advanced countries built a new type of jacketed cold storage, and the heat transferred from the peripheral structure was taken away in the jacket and was no longer introduced into the reservoir, which kept the temperature of the freezing chamber stable. If the temperature of the frozen product can be consistent with the temperature of the reservoir, substantially no dry consumption can occur. For the general cold storage, it is necessary to maintain the peripheral structure of the cold storage and reduce the external heat inflow; whitening the outer surface of the enclosure of the cold storage can reduce the radiant heat entering the storage; maintaining the refrigerated door and the air curtain, adding at the warehouse door Hanging cotton curtains or silicone rubber curtains reduce the heat entering from the warehouse door, reduce the time and number of door opening, and reduce the number of unnecessary entry into the warehouse. When the insiders leave, they must turn off the lights and reduce the inflow of external heat. In the cold storage, the temperature difference between the temperature in the storage and the temperature of the food and the air cooler should be reduced.  Reasonably reduce the air temperature in the refrigerating room and maintain the high relative humidity between the refrigerating rooms. The temperature and humidity should not fluctuate greatly. For the food itself, it can be packaged, and the aquatic product can be plated with ice, so that the surface of the ice coat and the frozen fish body can be closely attached to form an ice film, so that the ice crystal can be replaced by the sublimation of the ice body in the frozen storage. Sublimation, reducing the dry consumption of frozen fish. When packaging food, the inner packaging material should be close to the frozen food. If there is a gap between them, evaporation of water vapor and sublimation of ice crystals may still occur, and the frozen product may be consumed in the package. In addition, the refrigerating room should increase the load, increase the stacking density, and increase the volume of the crucible. After the forklift and pallet are stacked in the cold storage, the frozen products are neatly arranged. If the canvas is covered with canvas or plastic cloth, the dry consumption of the food can be reduced. For refrigerated rooms with chillers, the airflow in the store should be reasonable and at a slight wind speed (no more than 0.2) Face Temperature Machine,Temperature Face Recognition,Face Recognition Temperature Scanner,Face Recognition Time Attendance Shenzhen Bio Technology Co., Ltd , https://www.huifantech.com