03/07/2025
The main difference between a Cold storage warehouse and a controlled atmosphere (CA) warehouse is:
The use of CA storage:
CA Storage warehouse have an additional set of air conditioning equipment compared to Cold storage warehouses in terms of configuration
CA systems : The CA SYSTEM including such as nitrogen generator, air compressor, dioxide removal machine, and oxygen and ethylene removal machines and ozone generator.
1- Airtightness: CA SYSTEM in the requirements for airtightness in the construction process of the care higher than those of adinary fresh-keeping cold storage
2- Preservation principle: The controlled atmosphere warehouse adopts PLC program automation control, which has strong safety and reliability, and high production efficiency.
3- Storage time: Under the same preservation quality and temperature conditions, the preservation time of an air-conditioned warehouse is 3-5 times that of a cold storage, and for some foods, it can even reach tens of times longer
4- Shelf life: The controlled atmosphere warehouse uses inert gas to isolate the air, which can effectively inhibit the respiration and maturation of food cells. This not only prolongs the preservation time, but also extends the shelf life of food after it is released from storage, making it possible to sell food for a longer period of time after it is released from storage
5- Storage method: The controlled atmosphere warehouse adopts the method of whole storage and disposal. That is to say, it is stored once and shipped at once. The taboo thing about a controlled atmosphere storage is to open it frequently, because the composition of the gas inside the storage is very different from that outside. Frequent inflow and outflow of goods greatly reduces the preservation effect after the gas in the controlled atmosphere warehouse runs out
5. Building floors: CA warehouses are generally larger because the price of a set of air CA SYSTEM is around US $15k. It is not cost-effective to make a small cold storage into an air conditioning warehouse. Air conditioning warehouses are usually made in groups.
6- Cost: Due to equipment costs, the cost of CA storage is high, and the high benefits are also considerable.
In summary, although both are used for long-term preservation of food, CA storage has significant advantages in terms of preservation effect, storage time, and cost.
