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Cold storage should build on convenient transportation, water, electricity supply reliable place, library site should have a good sanitary conditions, try to avoid the industrial and mining enterprises of the harmful gases, smoke, dust and other pollution sources from the hospital for infectious diseases. Meat, fish processing plant cold storage should be arranged in the city residential summer wind minimum frequency upper side, located near the origin or distribution of goods convenient place. Building usually consists of cold processing and cold storage building, cold processing auxiliary buildings, transport facilities, management and living space of building and room ice building etc.. Cold processing and cold storage building referred to as " cold ", including the temperature at 0℃cooling, the temperature of -23 ~ -30℃frozen room, at a temperature of -12 ~ -20 ℃cold storage room, and the temperature of -4 ~ -10℃ice storage room temperature is 0-4 ℃precooling room ( row acid ). Cold storage layout should make a reasonable process, short route, do not cross, high, low temperature area clear, try to minimize the envelope area, column distribution neatly, and considering the expansion and repair convenience. The generally planar multilayer storage into square, often built dumbbell or single. Dumbbell type will be high-temperature storage and low-temperature storage is divided into two separate envelope structure, in the middle of the hall cohesion, good using effect. Single type in high, cold storage insulation wall between the floor and the ground to be spaced apart, doors and room temperature hall connected set, door air curtain, to prevent cold air from inside the library. The cold wall, ceiling, ground to lay low thermal conductivity material, such as rice husk, cork, asphalt, expanded perlite block such as insulation, are now more commonly used is moisture-proof plastic extruded board or polyurethane spray, also useful polyphenylene ( moisture resistance is not good ), to prevent the outside heat flux in library, increase the heat load. In order to prevent the outdoor water vapor to heat insulating layer permeability, also in the insulating layer of high temperature side laying the permeability barrier of the material, such as asphalt felt as a gas barrier polymer moisture-proof material, usually used at present.
