1. Selection of cold storage location
Cold storage can be divided into three types: storage cold storage, retail cold storage, and production cold storage. The production cold storage is built in the production area where the supply of goods is relatively concentrated, according to the nature of use. Also consider factors such as convenient transportation and market connection. It is better to build a cold storage in a cool place without sunlight and frequent hot wind, and build a small cold storage indoors. There should be good drainage conditions around the cold storage, and the groundwater level should be low. It is best to have a compartment under the cold storage, and maintain good ventilation and dryness is very important for the cold storage. In addition, before the construction of the cold storage, a three-phase power supply of the corresponding capacity should be set up in advance according to the power of the refrigerator. If the cold storage is water-cooled, the water pipes should be laid and the cooling tower should be built.
2. Determination of cold storage capacity
In addition to the aisles between the rows, the size of the cold storage should be designed according to the maximum amount of agricultural products to be stored throughout the year. This capacity is based on the volume that must be occupied by the stored products in the cold storage. Calculate the space between the pile and the wall and ceiling, and the space between the packaging. After determining the cold storage capacity, determine the length and height of the cold storage. The construction of cold storage should also consider necessary auxiliary buildings and facilities, such as workshops, packing and sorting rooms, tool warehouses, and loading docks.
3. Selection and installation of insulation materials for cold storage
In order to have good thermal insulation performance, the selection of insulation materials for cold storage must be adapted to local conditions. It must be economical and practical. There are several types of heat insulation materials for cold storage. One is processed into a plate with a fixed shape and specification, with a fixed length, width and thickness. The storage plate of the corresponding specification can be selected according to the needs of the storage body installation. High and medium temperature cold storage are generally used 10 cm thick storage board, 15 cm thick storage board is generally used for low-temperature cold storage and freezing cold storage; another type of cold storage can be sprayed with polyurethane foam, and the data can be sprayed directly into the brick or concrete warehouse to be built, and the shape is fixed The rear is both moisture-proof and heat-insulating. The structure of modern cold storage is developing towards prefabricated cold storage. Cold storage components including moisture-proof layer and heat-insulating layer are made, and can be assembled on site. Although the cost is relatively high, it has the advantages of convenient, fast and movable construction.
4. Selection of cold storage cooling system
Small-scale cold storages mainly use hermetic compressors, which are relatively cheap because of the low power of hermetic compressors. The choice of cold storage cooling system is mainly the selection of cold storage compressor and evaporator. Medium-sized cold storage generally uses semi-hermetic compressors; large-scale cold storage uses semi-hermetic compressors.
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