Cold storage refrigeration
At present, we still use air source heat pump principle, the development of agricultural products deep processing series of equipment, can have one dryer for drying of agricultural products to intelligence, for storage of fresh agricultural products and refrigeration equipment.
Cold storage has been an important part of the logistics industry since the end of the 19th century. Cold storage is mainly used for constant temperature and humidity storage of semi-finished products and finished products such as food, dairy products, meat, aquatic products, poultry, fruits and vegetables, beverages, flowers, green plants, tea, pharmaceuticals, chemical raw materials, electronic instruments, tobacco, alcoholic beverages. Cold storage belongs to a kind of refrigeration equipment, compared with the refrigerator refrigeration area is much larger, but they have the same refrigeration principle.
Generally, cold storage is mostly refrigerated by refrigerating machine. The liquid with very low gasification temperature (ammonia or freon) is used as coolant to make it evaporate under the condition of low pressure and mechanical control and absorb the heat in the storage, so as to achieve the purpose of cooling and cooling.
The most commonly used is the compression refrigerating machine, mainly composed of compressor, condenser, throttle valve and evaporation pipe. Direct cooling and indirect cooling can be divided into two types according to the evaporative tube device. Direct cooling The evaporator tube is installed in the refrigerated warehouse. The liquid coolant passes through the evaporator tube, directly absorbing the heat from the warehouse and cooling it down.
Indirect cooling means that the air in the storeroom is sucked into the air cooling unit by the blower, and the air is absorbed by the evaporating tube in the cooling unit and then sent to the storehouse to cool down. The advantages of air cooling method are rapid cooling, uniform temperature in the reservoir and the ability to take harmful gases such as carbon dioxide produced during storage out of the reservoir.
Food freezer is a building used for food freezing and refrigeration, it is through artificial refrigeration method, so that the storage to keep a certain low temperature. In order to reduce the heat into the outside world, the cold storage of floor, wall and roof laying a certain thickness of moisture proof gas insulation and heat insulation layer, in the food cold storage engineering management, should according to the characteristics of the food cold storage, implement scientific management, to ensure the safety in production, prolong the service life, reduce production cost, save maintenance costs, enhance economic efficiency of enterprises.
Yueling food refrigerator can be widely used in the constant temperature storage of fresh agricultural products.
In the general cold storage project, the refrigerating machine is used to refrigerate, and the liquid with very low gasification temperature is used as the coolant, which is mainly composed of compressor, condenser and evaporating tube.
Cold storage is actually a kind of cryogenic refrigeration equipment, the freezing temperature is generally between -10 degrees to -30 degrees, the storage of frozen food quantity is relatively large. Cold storage is also called cold storage, also belongs to a refrigeration equipment compared with the refrigerator, its refrigeration area is much larger, but they have the same refrigeration principle.