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Measures for warehouse humidity control

by:CNS     2021-07-16
Measures for warehouse humidity control 2021-06-20 12:44:211. Methods of dehumidification (1) Ventilation and dehumidification. When the humidity in the warehouse is high and the air outside the warehouse is relatively dry, ventilation can be used to reduce the humidity in the warehouse. When the ventilation drops, not only the humidity inside and outside the warehouse must be compared, but also the temperature inside and outside the warehouse must be compared. (2) Moisture absorption. In the rainy season or cloudy and rainy days, when the humidity in the warehouse is too high and it is not suitable for ventilation, it is a method to reduce the humidity in the warehouse by using machinery or moisture absorbents under sealed conditions. Mechanical moisture absorption usually uses an air dehumidifier to absorb moisture; moisture absorption is a method used when the humidity in the warehouse is high, and ventilation cannot be used to reduce the humidity. 9 At this time, the warehouse should be sealed as tightly as possible, otherwise it will reduce the moisture absorption effect. (3) Sealed and moisture-proof. It is to use some airtight, heat-insulating and moisture-proof materials to tightly seal the goods to isolate the air and reduce or reduce the impact of changes in air temperature and humidity on the goods. It requires checking the moisture content, temperature and humidity of the goods before sealing, choosing heat and moisture-proof materials (asphalt paper, plastic film, reed mats, etc.), determining the sealing time, and strengthening management after sealing. The main methods of sealing are: shelf sealing, stack sealing, chamber sealing and whole storage sealing. (4) Power on to drive tide. It uses the heat generated after some electrical appliances are energized to drive away moisture. Generally, when the interior of electrical goods with winding coils is damp, the method of electrification can be adopted to drive the damp. But pay attention to the electrical properties of the goods, otherwise accidents are prone to occur. (5) The air curtain keeps moisture away. Air curtain, commonly known as 'air curtainHot air from outside enters the warehouse. 2. Humidification method When the air in the reservoir area is too dry, the humidity of the air needs to be increased. Can reduce the air flow in the warehouse, manual or mechanical sprinkling, can also use centrifugal humidifier, electrode type steam humidifier, ultrasonic humidifier, etc. Example: The dry bulb temperature measured outside a warehouse is 16°C and the wet bulb temperature is 14°C. The goods in the warehouse are required to be stored within the humidity range of 50% to 60%. What storage measures should the warehouse take? :Because: 16-14u003d2(℃) Look up the table: When the temperature is 16℃, the dew point with a difference of 2℃ between the dry bulb temperature and the wet bulb temperature is 12℃ and the relative humidity is 79%. Then: ①The temperature in the warehouse must be controlled above 12°C to ensure that the goods will not cause moisture damage; ②If the goods in the warehouse are required to be stored within the humidity range of 50% to 60%, the warehouse should adopt moisture-proof and dehumidifying storage methods , The specific method should be determined according to the warehouse conditions to adopt the corresponding sealing technology, ventilation technology or humidity control technology.
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