Refrigerated 十大电子游艺网址s refer to 十大电子游艺网址s that have certain heat insulation functions, can adhere to certain low temperatures, and are specially planned for various types of food refrigerated storage and transportation。

　　Refrigerated 十大电子游艺网址s must be strong enough to withstand harsh transport conditions, and their refrigeration equipment must meet the following requirements:

　　Fully automatic heating, cooling and defrosting;It can be driven independently and connected to external power supply.According to the requirements of loading food, the temperature can be adjusted within a certain range, and the temperature deviation is small;High impact strength, good anti-vibration function;

　　The ventilation system can provide fresh air of about 50m3/h per square meter of cold load 十大电子游艺网址 volume:

　　The relative humidity of the air is 85% to 95% to prevent drying。As far as the refrigeration system is concerned, the refrigerated 十大电子游艺网址 is a single room or packaged refrigerator of a rather dry small refrigerator, mostly air-cooled condensing units, using direct air cooling, the temperature conditioning range in the box is large, and generally can adhere to -18 ° C ~-12 ° C。

　　There are two types of freezer 十大电子游艺网址s: external and built-in。The temperature can be adjusted between -28℃ and +26℃。The built-in 十大电子游艺网址 can start the refrigerator at will during the transportation process, so that the 十大电子游艺网址 can adhere to the specified temperature;The external type is necessary to rely on special 十大电子游艺网址 vehicles, ships and special piles, and freezers equipped on the station to cool。This box is suitable for transporting butter, chocolate, frozen fish, condensed milk, margarine and other items in the summer。

　　1 After loading the freezer, the original quality of the refrigerated or frozen goods should be checked and explained on the manifest。

　　2 In the packing process, the loading and stacking principle should be strict to avoid the cooling imbalance caused by the cold wind short circuit and reduce the cooling power of the refrigeration equipment。

　　3 When the frozen goods are transported for long distances, the difference between the set temperature in the box and the actual temperature should not exceed 3℃。If cooling cargo is transported, the temperature error should not be greater than 0.5℃, * no greater than 0.25℃。

　　4 Containers transporting fresh fruits, vegetables, etc., should be opened in time for ventilation, but when transporting frozen goods, the fresh air should be closed.

　　5 When transporting the cooled goods packed in cartons, timely ventilation should be carried out according to the outdoor air temperature and temperature conditions, and the air inside the boxes should be dry to avoid condensation on the outside of the packaging boxes。