Industrial dehumidifier moisture, mildew knowledge
Protective focus has long been trying to find an effective means of moisture mildew and corrosion to address product safety preservation. To control the water environment, focusing on the ambient relative humidity at about 50 percent, we can guarantee the safety deposit vast majority of items. For this purpose, it uses a variety of drying methods. There are three main traditional methods, namely high-temperature dehumidifier, dehumidifier and low moisture absorption agent dehumidification three ways.
First, dehumidification moisture manner:
1, high-temperature dehumidification mode: High temperature dehumidifier is mainly used to bake heating dehumidification, such as various electric and far-infrared oven, oven. As a result of high temperature, it can destroy objects made of organic material, while the metal material will generate heat effect, change the properties of the metal, causing damage. The long-term sustainability of heating, is unrealistic. Therefore, as a long-term safe storage of goods, high-temperature dehumidification mode is not adopted.
2, low temperature dehumidification mode: The main is to use low-temperature dehumidifier dehumidifier refrigeration chillers, which works by reducing the condenser surface temperature of the cooling device, so that moisture in the air condensing on the condenser condensation, then drop out excluded. Where in this way will the sealed space moisture in the air is discharged to reduce the humidity, are low temperature dehumidification. Frozen dehumidifier is the most effective, safest, most economical way dehumidification.
3, vacuum drying method: drying cabinet for the purpose of air evacuated to achieve the removal of moisture. Constituted by the cabinet and vacuum pumps. Due to a high vacuum, so the box and the box door to withstand atmospheric pressure and sealing requirements, compared with the external dimensions of the box, a small internal effective use of space. And can only be realized in a small enclosure, it should be used with pressure, inconvenient, expensive purchase. Applications small.
4, moisture absorption agent dehumidification mode: Silicone is generally placed in a sealed container to dehumidify. The disadvantage is that when the moisture absorption saturation drying need to be replaced or artificial regeneration, over many years of protracted maintenance work is quite complicated; more importantly, due to the moisture absorption saturation time is not easy to accurately foresee exactly how much humidity inside the container can not rely on the Specious know the exact degree of discoloration of silica gel, and thus can not replace timely and appropriate moisture absorption.
Second, the occurrence of mold hazards:
1, the occurrence of mold fungi many unusual species, they include fungi gates Ascomycetes, algae-like bacteria Gang, incomplete Hymenomycetes, etc. Among them, the invasion of industrial materials has 40,000 species. Fungus is spread primarily rely spores were tiny powder, visually difficult to observe. Ejection from the mold spores out, because of its small size, light weight, air movement and dust in the air and move the body and objects float around. But when the development of a suitable environment, can be growth and reproduction, procreation, it is often said of mildew.
2, article mildew conditions 1), Humidity: relative humidity greater than 60% to the growth of mold. Greater than RH 65%, growth accelerated, up RH80-95% when humidity is high incidence of environmental mold. 2) Temperature: fungal mycelium 8 degrees above ambient temperature to growth, accelerate the growth of more than 12 degrees, when the temperature is above 10 degrees, the humidity at 60% or more of the environment, mold can cause harm to the article. When the temperature is 20-35 degrees, humidity at 75-95%, the mold can form explosive growth.
3, the process of oxidation of the metal oxide corrosion corrosion occurrence and damage metal is moisture in the air, oxygen cause the metal to produce an electrochemical reaction process. Research shows that metal oxidation corrosion of air relative humidity threshold is 70% steel, 60% copper, 76% aluminum, 63% iron, zinc is 60%. The metal deposited in the environment above the threshold, the oxidation corrosion rate increased with air relative humidity value and continue to accelerate.
