높은 Efficiency 및 High Quality Low Temperature Cold Storage

High efficiency and high quality Low temperature cold storage
1.Cold storage capacity divided by small, medium and large cold storage; storage temperature divided by relatively high temperatures, generally warm temperatures, low temperatures and freeze library. High temperature library suitable for fresh fruits and vegetables; temperature libraries suitable for the frozen food refrigeration; cryogenic library suitable for aquaculture, poultry refrigerated frozen foods; and to freeze the library applies to freeze fresh products quickly before refrigeration.
2.Capacity Category:
Small refrigerator <500 m3
Medium-sized refrigerator  500 to 1000 m3
Large cold storage > 1000 m3
Customizable
3.Storage temperature classification:
Higher temperature cold storage: ± 5 ºC
General cold temperature: -10 ºC ~ -5 ºC
Low temperature cold storage: -20 ºC ~ -10 ºC
The freezing cold: below -23 ºC


Design and manufacture of cold storage:
1, the library site selection and preparation
Refrigerator into the production, distribution and retail categories.
Production should built in supply relatively concentrated area, consider transportation, and other markets.
Refrigerator should be in the shade, there is no direct sunlight and hot air frequently, small refrigerator best to built indoors.
Nearby should have good drainage conditions, the water table best be lower,
There should be shelves below the refrigerator , maintain ventilation and dry.
According to the power of the freezer in advance to set up a corresponding three-phase power, if the cold water cooled, should lay water pipes, build cooling towers.
2, the cold storage size
The size of the refrigerator should be designed according to the highest annual amount of storage products.
The storage capacity is based on the volume of goods stacked in the library occupied required, plus the aisle, heap and walls, the space between the ceiling and so on. After determining the space, and then determine the length and height of the cold. To consider the necessary ancillary buildings and facilities, such as the workplace, packing finishing, libraries, and tools such as cold storage loading dock design.
3, a heat insulating material
Choice of insulation material must local conditions, both have good insulation properties, but also economical and practical. Insulation materials divided into several types, one is processed into a fixed shape and size of the plate, there is a fixed length, width and thickness, according to the library mounting need to select the appropriate size of the plate, Higher temperature cold storage and General cold temperature is generally used 10 cm thick plate, Low temperature cold storage and The freezing cold is generally used to freeze 12 cm or 15 cm thick plate; another may use polyurethane spray foam, the material is sprayed directly into the already built of brick or concrete warehouse, after setting both moisture also insulated. Insulation plates have polyurethane, polystyrene resin and so on. Polyurethane does not absorb water, heat better, but higher costs; polystyrene resin absorbent, poor insulation, but lower cost. Modern cold storage structures fabricated positive development, made the library member includes a vapor barrier and insulation layer, so that on-site assembly, the advantage of construction convenient, fast, and can be moved, but the cost is relatively high.
4, the cooling system
The cooling system is mainly compressor and the evaporator.
In general, Small refrigerator choose closed compressor. Closed compressor power is small, relatively cheap;
Medium-sized refrigerator is generally used in semi-hermetic compressors;
Large cold storage selection of semi-hermetic compressor refrigerator, in the selection, but also consider the use of ammonia refrigeration compressor, because ammonia refrigeration compressor power is high, and a multi-purpose machine, but more cumbersome to install and manage.
When the evaporator selection, selection the fan as the evaporator in Higher temperature cold storage, which features a cooling speed, but could easily lead to loss of water;
General cold temperature and Low temperature cold storage used seamless steel pipe production evaporation pipes, which is characterized by a constant temperature effect, and the timely Storage.
 
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