- 本站编辑:杭州克冷制冷设备有限公司发布日期：2018-06-01 13:39 浏览次数：
For the fresh fruit business, it is very important to build a medium fruit cold storage that can both keep fresh and reduce wastage. But how can we make a good medium-sized fruit cold storage and how to ensure its service life during construction?
In the view of the professionals, the construction of medium fruit cold storage from the beginning of the construction to the equipment installation is generally under normal temperature, and the structure system is in the normal temperature state, and the structure system is in the low temperature environment when the refrigerated storage is put into use. The deformation of the structural system caused by the large temperature difference is much larger than that of the ordinary building. Therefore, the calculation of the temperature stress must be carried out to prevent the generation of the "cold bridge". Anti freezing measures should be taken to prevent damage to buildings in Keelung. At the same time, frost resistant and strong ground material (Material) should be selected to enhance the frost resistance and durability of the structure.
The load bearing structure of medium sized fruit cold storage is generally beam slab structure, and the large multi-storey cold storage mainly adopts cast-in-place reinforced concrete flat slab structure. In recent years, precast precast floor slabs and slab structure with slab lifting method are being popularized step by step. Besides the strength and stability, the structural design of the retaining wall of the cold storage area should also maintain the continuity of the insulation layer and the gas isolation layer, so as to meet the requirements of building thermal engineering. The roof structure of the refrigerated storage area is directly irradiated by the sun for a long time and is affected by the change of temperature, it will produce expansion or contraction deformation. The prefabricated component should be adopted to make the deformation between the components to be adjusted, thus reducing the total deformation. In order to prevent the adverse effect of roof expansion on the wall, a sliding contact surface can be designed between the roof structure and the wall.
Because the medium fruit cold storage is mainly used for freezing and cold storage in food places, it is necessary to maintain low temperature indoors by artificial refrigeration. The wall, floor and flat top of the cold storage area are covered with a certain thickness of heat insulation material (Material) to reduce the heat input from the outside. In order to reduce the absorption of solar radiation, the surface of the cold storage wall is usually painted white or light. Therefore, we can clearly see that the refrigerated warehouse building is different from the general industrial and civilian buildings.
At the time of design, in order to avoid the structural damage during the periodic freezing and melting process, the structure of the Material and the cold storage parts of the medium fruit cold storage should not only have sufficient frost resistance, but also prevent the diffusion of water vapor and air infiltration. Because the outdoor air intrusion not only increases the cooling capacity of the refrigerated reservoir, but also brings water into the storeroom, the water condensing causes the construction structure, especially the heat insulation structure to be damaged by the damp, so the moisture proof and heat insulation layer should be set up so that the construction of the refrigerated storehouse has good sealing and moisture proof performance.
In addition, the ground of the medium fruit cold storage ground is affected by low temperature, and the moisture in the soil is easy to freeze. Because of the expansion of the soil after freezing, it will cause ground rupture and deformation of the whole building structure, so that the cold storage can not be used. For this reason, besides the effective insulation layer, the floor of the cryogenic cold storage must be treated under the insulation layer to prevent the soil from freezing.
In a word, the construction and design of medium-sized fruit cold storage should be strictly insulated, sealed, strong and antifreeze, in order to ensure the service life of the cold storage and prolong the service life of the cold storage.