冷库制冷系统的选择主要是压缩机与蒸发器的选用，制冷系统是冷库的核心，主要由压缩系统、冷凝系统、蒸发系统和调节阀四大部份组成，另外还有风扇、导管和仪表等辅件。

The refrigeration system of choice is the choice of the main compressor and evaporator, cold storage refrigeration system is the core, mainly by the compression system, condensing system, evaporation system and regulating valve four most, in addition to the fan, catheter and instrument accessories.

冷库隔热材料的选用必须因地制宜，既要有良好的隔热性能，又要经济实用。隔热材料分几种类型，一种是加工成固定形状及规格的板块，有固定的长度、宽度和厚度，可根据冷库库体安装的需要选择相应规格的板块，高、中温冷库一般选用10cm厚的库板，低温冷库及冻结冷库一般选用12cm或15cm厚的板块;另一种可以用聚氨脂喷涂发泡，把材料直接喷到已经建成的砖或混凝土仓库中，定形后既防潮又隔热。

The selection of heat insulation materials for cold storage must be in accordance with local conditions, not only with good heat insulation performance, but also economical and practical. Insulation materials of several types, one is processed into a fixed shape and specifications of the plate length, width and thickness are fixed, select the appropriate specifications of the plate according to the need of Refrigeratory library body installation, high temperature, cold generally 10cm thick base plate, cold storage and freezing cold storage or general use 12cm 15cm thick plate; another can use spray polyurethane foam, the material is sprayed directly into the already built brick or concrete warehouse, setting both waterproof and heat insulation.

整个制冷系统是一个密封的循环回路，制冷剂在该密封系统中循环，根据需要控制供应量和进入蒸发器的次数，以获得适宜的低温条件。压缩机是制冷系统的心脏，它推动制冷剂在系统中循环。

The whole refrigeration system is a sealed loop, the refrigerant is circulating in the sealing system, and the quantity of the supply and the number of the evaporator entering the evaporator are controlled according to the requirements so as to obtain the suitable low temperature condition. The compressor is the heart of the refrigeration system, which pushes the refrigerant through the system.

冷凝器的作用是排除压缩后的气态制冷剂中的热量，使其凝结成液态制冷剂;冷凝器的冷却方式有空气冷却、水冷却、空气与水相结合三种，空气冷却只限于小型冷库制冷设备中应用。

The role is to exclude the compressed gaseous refrigerant in the heat, which condenses into liquid refrigerant; cooling condenser with air cooling, water cooling, air and water with three kinds of air cooling is only used for small cold storage refrigeration equipment.

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