Dry ice refrigerator keeps good freshness

There are four major advantages of using dry ice for cold storage: easy to use, safe and efficient, sufficient cold storage capacity, and high-cost performance.

Dry ice produces a freezing effect, is easy to use in cold storage, and is ideal for cooling. In addition to greatly reducing the speed of food spoilage and chemical reactions, dry ice causes the water in food to form ice, which also seriously hinders the growth of microorganisms, which can greatly extend the optimal date of food.

       The use of dry ice for refrigerated foods can greatly extend the storage time of food. The refrigerated foods have a short shelf life. If they can be frozen, they can be stored for several months. Dry ice can reach a low temperature of -78 degrees, which is a temperature that cannot be achieved by some freezer cabinets. Therefore, the use of dry ice for the preservation and transportation of refrigerated food, meat, fish, vegetables, fruits, and eggs can greatly extend the storage time.

       The phase change temperature (from solid to gas) of dry ice is -78.5 ° C. The actual temperature in the incubator after adding dry ice is between -38 ° C and -55 ° C. Many medicines and foods need to be stored at -18 ° C freezing temperature. Therefore, dry ice is used for refrigerated storage.

        In fact, biopharmaceutical companies often use solid carbon dioxide refrigerated reagents to send to the field, and dry ice with carbon dioxide is easy to use. It will not turn into the water like water ice, and the temperature is low, and the cooling effect is ideal.

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       Dry ice is widely used in refrigerated transportation. Therefore, dry ice has become a necessity for refrigerated transportation.

       Dry ice is easier to operate, safer and more convenient than refrigerated transport in liquid nitrogen tanks. It has been adopted by a considerable number of universities (mainly the College of Life Sciences) and research institutes in the world.

       Dry ice is used for cryogenic medical applications and low-temperature transportation of special drugs such as plasma and vaccines. Dry ice is used for the preservation and transportation of living cells and biological agents such as cell lines and genetic reagents. Biological laboratory living cell specimens are refrigerated with solid carbon dioxide. Refrigerated transportation of specimen blood in air transport is also indispensable for cooling.

      Dry ice is used for frozen and refrigerated transportation and preservation of lobster, crab, shark fin, salmon and other seafood. Dry ice also transports long- and short-distance transportation of electronic low-temperature materials and precision components.

Dry ice is used for the preservation of high-grade foods such as high-grade beef and mutton. In order to ensure that the moon cake ice cream always maintains excellent taste after being picked up and transported, Haagen-Dazs has always used dry ice to keep cold, and in recent years, special dry ice boxes have been made to keep the delicious flavors unchanged.

       The existing cold chain express and low-temperature distribution generally adopts the refrigeration mode of the refrigerated truck compressor refrigeration unit, which has large energy consumption. It is neither economical nor environmentally friendly for the current large number of low-temperature distribution. There are also some fresh cold chains expresses that use ice plates and other cold storage materials. Although it can be recovered, the cost is high, the secondary cold storage time is long, the turnover cycle is long, and the cold storage capacity is insufficient. There is a clear trend.

       In the past two years, a kind of rechargeable electric vehicle refrigerator has also occupied the fresh city distribution market, such as the fresh front refrigerated truck, which claims to perfectly solve the last mile of fresh food delivery. It does have advantages, but it also has a large investment, and the battery pack and frame have limited life cycles.

      Nowadays, cold chain logistics and intra-city distribution are increasingly using dry ice as a cold source and low-temperature distribution model. Dry ice is widely used in the distribution and storage of biological products, food, and aquatic products with a storage temperature below 0 degrees. Its excellent cooling effect makes dry ice the darling of cold chain distribution.

        The low-temperature distribution model that uses dry ice as a cold source is to use dry ice to release the cold capacity during transportation to maintain the low temperature of the cargo. This mode is very suitable for low-temperature and small-quantity delivery of goods. As a new low-temperature logistics distribution refrigeration method, the low-temperature distribution mode using dry ice has a lower cost, does not require additional energy, and is very convenient to use.

       Fresh foods have a short refrigerated storage period. If they can be frozen, they can be stored for several months. Long-term freezing must be kept at a low temperature of below -18 ° C. Dry ice can reach a low temperature of -78 ° C, which is impossible for most freezers. Achieved a low temperature. Therefore, the use of dry ice in the storage and transportation of refrigerated fresh food, meat, seafood, vegetables, fruits, and eggs, and the storage and transportation of eggs can greatly extend the storage time.