Construction of various types of food cold storage facilities is aimed at meeting the needs of people's material production and cultural life. The main purpose of cold storage construction is to carry out cold processing and preservation protection of food. Food cold storage facilities include storage rooms for food, ammonia (or Freon) refrigeration rooms, transformer and distribution rooms, and ground buildings such as foundations.
Refrigerated warehouses use manual refrigeration methods to process perishable foods, ensuring the supply meets market demands during peak and off-peak seasons. They also serve as export facilities and for long-term storage. In other words, refrigerated warehouses are the city's refrigerator, guaranteeing the supply of food demand within the city.
Food cold storage is constrained by production process conditions, performing cooling, preservation, freezing, and refrigeration processes for easily corroded food under low-temperature conditions; it provides the necessary conditions to maintain the color, flavor, and nutritional value of the food. Depending on the preservation temperature of the food, the temperature in cold storage rooms is generally between -40°C to 0°C. Therefore, the cold storage buildings must be able to withstand low-temperature conditions, requiring the implementation of low-temperature treatment technical measures for the buildings.
The food cold storage serves as both a factory and a warehouse.
Refrigerated warehouses are not just storage facilities for food; they are also productive factories for food cold processing. They must meet the requirements of various different types of food cold processing and ensure the transportation conditions and packaging specifications for food, among other facilities.
2. Insulation
Temperatures inside a food cold storage warehouse are typically significantly different from those outside, with a large temperature variance. To minimize cooling losses, it is essential to prevent external heat from entering the warehouse through the peripheral structure of the cold storage. Consequently, the maintenance structure of cold storage buildings must be equipped with insulating layers that offer heat resistance.
3. Airtight and moisture-proof
Insulation layers in the cold storage's protective structure can reduce the transfer of heat; however, during the heat transfer process, water vapor in the atmosphere also moves from the high-temperature side to the low-temperature side (i.e., from the side with higher water vapor partial pressure to the side with lower water vapor partial pressure). When water vapor passes through the protective structure, it condenses into moisture within the material's pores. Upon cooling, this moisture freezes into frost or ice, significantly increasing the material's thermal conductivity, rendering the insulation ineffective.
4. Cold Bridge
Insulation construction in food cold storage mostly employs internal insulation methods, which inevitably results in numerous cold bridges. To prevent heat transfer from affecting the temperature inside the cold storage and damaging the building, it is necessary to treat and prevent cold bridges at these locations.
Here are the precautions provided by Haoshuang Refrigeration for the construction of food cold storage. Food cold storage must be designed and selected based on the refrigeration temperature of the stored food. Haoshuang has a dedicated cold storage design team that offers integrated cold storage solutions to clients year-round.
