The main factors that determine the quality of cold storage

1. Cold storage capacity:

The size of the cold storage should be designed based on the maximum amount of agricultural products to be stored throughout the year. This capacity is calculated based on the volume required to store the product in the cold storage, plus the distance between the rows, the space between the stack and the walls, the ceiling, and the gap between the packages. After determining the capacity, determine the length and height of the cold storage. Cold storage design must also consider necessary auxiliary buildings and facilities, such as workshops, packing and finishing rooms, tool warehouses and loading docks, so that the quality of cold storage can be guaranteed.

2. The selection and construction of insulation materials are very important to the quality of cold storage:

The selection of cold storage thermal insulation materials must be based on local conditions. It must have good thermal insulation performance and be economical and practical. Insulation materials are divided into several types. One is a plate processed into a fixed shape and specifications, and has a fixed length, width, and thickness. A plate of a corresponding specification can be selected according to the requirements of the installation of a cold storage body. Generally, high and medium temperature cold storage is selected 10 Thickness of the library plate, low temperature cold storage and freezing cold storage generally use 12 cm or 15 cm thick plate; the other can be sprayed with polyurethane foam, the material is sprayed directly to the built brick or concrete warehouse, after shaping Both moisture and heat insulation. Insulation plates include polyurethane, polyphenylene, and the like. Polyurethane is not water-absorbent and has good heat insulation, but its cost is high. Poly-phenyllate has strong water absorption and poor heat insulation, but its cost is low. The structure of the modern cold storage is being developed in a forward direction. It has been built into a warehouse structure that includes a moisture-proof layer and a thermal insulation layer. The advantage of this is that the construction is convenient, rapid, and portable, but the cost is relatively high.

3. The choice of refrigeration system is most important for the quality of cold storage:

The choice of cold storage refrigeration system is mainly the choice of compressor and evaporator. The refrigeration system is the core of the cold storage. It is mainly composed of a compression system, a condensing system, an evaporation system, and a regulating valve. In addition, there are accessories such as fans, ducts, and meters. The entire refrigeration system is a sealed circulation loop. The refrigerant circulates in the sealing system, and the supply quantity and the number of times of entering the evaporator are controlled as required to obtain a suitable low temperature condition. The compressor is the heart of the refrigeration system, which promotes the circulation of the refrigerant in the system. The function of the condenser is to eliminate the heat in the compressed gaseous refrigerant and condense it into a liquid refrigerant. The cooling methods of the condenser include air cooling, water cooling, and air-water combination. The air cooling is limited to small refrigerators. Application in refrigeration equipment. The role of the evaporator is to provide cold storage to the cold storage. The evaporator is installed in the cold storage. The blower blows the cooled air to various parts of the warehouse. The common cold storage is used to connect the evaporator and extend the air supply distance. The temperature dropped more evenly.