Ultra-low temperature medical refrigerator is a typical type of mechanical refrigeration, which features large storage space, compact structure, and easy operation.
Disadvantages: It usually takes 6 to 9 hours for a deep-freezer to cool down from room temperature to low temperatures.
Because both have their own advantages and disadvantages. Many science laboratories now use the advantages of these two methods of refrigeration. Using the characteristics of rapid cooling of liquid nitrogen to cool the items,store them in a deep-freezer for long-term storage. In addition, the cryogenic refrigerators are equipped with a liquid nitrogen backup refrigeration system for the risk of unstable operation of cryogenic refrigerators.
In the event of an accident such as a power outage, liquid nitrogen can be quickly filled in instead of compressor refrigeration to ensure storage conditions.