食品冷库的建造要求是怎样的呢？下面小编为您介绍一下：
What are the requirements for the construction of food cold storage? Below small make up for you to introduce:
1.隔热层的隔热性能要好。隔热层的隔热性能越好，耗冷量越小，所引起的库温波动也就越小，从而有利于贮藏物的质量保持，延长贮藏时间，减少贮藏物的干缩损耗，同时可以节省制冷设备的投资和运转费用。注意隔热层外侧的防潮。冷库围护结构两侧的温度不一致，易形成水蒸气分压差，伴随热量的传递，库外的水蒸气就会向库内渗透，故应设置防潮隔气层。常见的防潮方法有3种：沥青防潮、塑料薄膜防潮及使用金属夹心板兼作防潮层。
1 thermal insulation performance is better. Insulation insulation performance is better, cooling consumption is small, caused by the temperature fluctuation is small, which is advantageous to maintain the quality of storage, to extend the storage time, reduce dry shrinkage loss of storage, also can refrigeration equipment investment and operation cost saving. Attention to the outside of the insulation layer of moisture. Temperature on both sides of the building envelope is not consistent, easy to form water vapor pressure difference, with the heat transfer, the water vapor outside the library will penetrate into the reservoir, it should be set moisture barrier. There are 3 common methods: asphalt waterproof moisture-proof, moisture-proof plastic film and metal sandwich plate as moistureproof layer.
2.选择合适的制冷系统。冷库是通过人工制冷的方法来获取冷量的。目前常用液体气化制冷法或蒸气制冷法。蒸气制冷法可分为压缩式、吸收式、喷射式3种制冷方式，其中以压缩式最为广泛。压缩式制冷机主要由压缩机、冷凝器、调节阀和蒸发器4部分组成，它是一个闭合循环系统。
2 select the appropriate refrigeration system. Cold storage is obtained by the method of artificial refrigeration. At present, the commonly used liquid gasification refrigeration or steam refrigeration. Vapor refrigeration method can be divided into 3 types, compression type, absorption type, injection type, in which the compression type is the most widely used. The compression refrigerating machine is mainly composed of 4 parts, the compressor, the condenser, the regulating valve and the evaporator, which is a closed loop system.
3.安装良好的抽气系统。食品在冷库内贮藏一定时间后易积累二氧化碳、乙烯等气体物质，故需安装良好的抽气系统，以便经常换入新鲜空气，以利于食品的贮藏保鲜。
3 installation of good pumping system. The food is easy to accumulate carbon dioxide, ethylene and other gases after a certain period of storage in the cold storage. Therefore, it is necessary to install a good pumping system so as to change the fresh air regularly so as to facilitate the storage and preservation of food.
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