Is the construction price of ultra-low temperature cold storage expensive

　　The temperature of an ultra low temperature cold storage is typically between-60℃and 40℃,such as tuna,which is typically placed in this type of cold storage.The construction requirements for this type of cold storage are relatively high,and the cooling cost is also high.The Wuhan Jinyu Cold Storage Project undertaken by Xinhe Mechanical and Electrical Institute covers the tuna cold storage at-55℃.

　　The specific requirements for low-temperature cold storage are as follows:

　　The advantage of constructing ultra low temperature cold storage is that it can avoid the formation of ice crystals between cells,reduce the occurrence of water leakage between cells,and reduce the loss of juice during thawing.During thawing,there will also be a decrease in juice loss.The construction of ultra-low temperature cold storage will shorten the effective time for the solution and various components inside the cell tissue to come into contact with each other,which can lead to a lower degree of harm.If the food is quickly lowered to a suitable temperature,it can prevent microbial biochemical reactions.During the freezing process,the retention time of the food is relatively short,which can also help effectively improve the utilization rate of the equipment.

　　Generally,when the temperature of food drops to-1 degrees Celsius,there will be a phenomenon of freezing.If the temperature is between-5 degrees Celsius and-1 degrees Celsius,ice crystals can form at this stage,which is the highest stage of ice crystal formation.We know that ultra-low temperature cold storage can greatly shorten the freezing phenomenon at this stage,and can also help us quickly eliminate some of the heat storage items,which has certain significance for improving the quality of food stores.

　　The construction cost of low temperature cold storage is very high.Because of the high requirements for cold storage,the required equipment costs are also quite high,which is a bit higher than the cost of ordinary low temperature cold storage.An ultra low temperature cold storage requires an insulation layer,which is relatively expensive,resulting in a much higher cost for a low temperature cold storage.