What is the role of moisture barrier in cold storage cost engineering

What is the role of moisture barrier in cold storage cost engineering

What is the role of the moisture barrier in the cold storage cost project? Some people think that it doesn't matter whether it is used or not, and it can save a little cost if it is not used. In fact, it is not as simple as you think. It will have a significant impact on the cooling effect of the future cold storage cost project.

Because of the large temperature difference between the inside and outside of the cold storage cost project, a water vapor and wind pressure difference corresponding to the temperature difference will inevitably form, and then water vapor will penetrate from the high temperature side with higher partial pressure to the cold storage cost project with lower partial pressure through the maintenance structure . When water vapor passes through the interior of the enclosure and reaches a certain temperature zone lower than the dew point temperature of the air, the water vapor condenses into water or freezes, causing damage to the insulation structure.

　　The availability and quality of the air and moisture barrier of the cold storage cost project play a decisive role in the thermal insulation performance of the enclosure structure, and the unreasonable setting of the air barrier and moisture barrier will also cause serious damage to the enclosure structure. If the vapor barrier is improperly handled, no matter what material and thickness is used for the insulation layer of the cold storage cost project, it will be difficult to achieve a good insulation effect. The thinner insulation layer can also be compensated by increasing the capacity of the refrigeration device of the cold storage cost project. If the moisture-proof layer is poorly designed and constructed, water vapor in the outside air will continue to invade the insulation layer and even the cold storage, and produce the following Result:

　　1, cause the rot and disintegration of the insulation material;

　　2, cause corrosion of building materials;

　　3. Increase the frost on the surface of the evaporator in the cold storage cost project, increase the number of defrosts, and affect the temperature of the cold storage and the quality of the stored goods;

　　4. Speed up the temperature rise of the cold storage cost project, increase power consumption and cooling costs;

　　 5. The end result of long-term water vapor penetration will lead to the destruction of the maintenance structure, and even the entire cold storage building will be scrapped in severe cases.

　　 Therefore, in the design and construction of the cold storage cost project, adequate attention should be paid to the maintenance of the steam and moisture barrier of the structure.