【 Weak current College 】 cold storage design technical knowledge

Common cold storage can be divided into the wholesale business of cold storage, retail freezer, productive cold storage. Production of cold storage built in sourcing more focused areas, but also the transportation is convenient, and market linkages, and other factors.
　　
Cold storage is not in direct sunlight and temperature is too high for the occasion, should be built on the best in the shade, a small freezer best built indoors. Freezer around should have good drainage conditions, groundwater level to low, it is best to have a cold storage underneath, and insulating layers remain a well-ventilated, dry, it is important to the freezer. In addition in the freezer before construction should be based on the refrigeration unit of the power to set up the appropriate capacity for three-phase power supply, if the refrigeration unit is the water cooler, water should be laid, build good good cooling tower.
　　
Cold storage warehouse capacity of
　　
Freezer storage size according to the storage of products of the highest amount to design. This capacity is based on the storage of products in the refrigerated warehouse stacked within the required volume, coupled with the pedestrian walkway, calculations to determine cold storage capacity, and then determine the length of the cold room width and height.
　　
The select freezer insulation
　　
Cold storage insulation material selection is necessary to have good insulation properties, and also economical. Cold storage insulation material there are several types, one is the root length, width and height of the processed all of the Library Board with check, according to the needs of the library of the installation, select the appropriate size of the Library Board, high, medium-temperature refrigerated warehouse General selection 10 cm thick of Library Board, low temperature cold and freezing cold-like selection of 12 cm or 15 cm thick of library board; another cold storage can use polyurethane spray foam sprayed directly on the materials to the construction of brick or concrete cold storage warehouse, shaped and insulation after both moisture-proof.
　　
Insulation with polyurethane and polystyrene resin, etc. Polyurethane non-absorbent, insulation of good, but cost more; polystyrene fat absorption, heat less, but is less expensive. The structure of modern cold storage to the assembled cold storage development, made of moisture-proof coating and included insulation layer of cold store Widget, do on-site Assembly, its advantages are easy, fast, and portable, but the cost is relatively high.
　　
Select freezer refrigeration system
　　
Selection of refrigerating system is mainly a refrigerator compressor and evaporator selection. In General, a small selection of hermetic compressor refrigerator. As a result of hermetic compressor power small, relatively cheap; medium cold storage selection semi-enclosed compressor mainly in general; large selection semi-enclosed compressor refrigeration storage, use, or you can consider the ammonia refrigeration compressor, because ammonia refrigeration compressor power and multi-purpose a machine, but cold storage installation and management is more complex. Selection of the evaporator, the heat cold store to use air cooler for the evaporator, which is characterized by rapid cooling, but the readily lead to moisture loss of refrigerated product; selection of medium and low temperature cold produced by the evaporation of seamless tubes, its characteristics are constant temperature effects, and the timely cool.